https://community.element14.com/technologies/passive-components/This group focuses on discussions revolving around capacitors, resistors, and inductors for a wide range of applications.en-USTelligent Community 12https://community.element14.com/technologies/passive-components/f/forum/55852/resistor-and-capacitor-id/228959Fri, 30 May 2025 13:54:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:71047f16-4e87-4bb7-839e-981546fea520kmikemooanniel747 I vaguely remember some odd notation in older service manuals, but on the vintage radio equipment and OLD Basler voltage regulators that I've worked on, they're all rated in microfarads - MFD. It's probably because there wasn't an ASCII symbol for mu, µ, back then.https://community.element14.com/technologies/passive-components/f/forum/55852/resistor-and-capacitor-id/228957Fri, 30 May 2025 12:13:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:118b61ba-61ce-404a-b720-5b913b259b88anniel747[deleted]https://community.element14.com/technologies/passive-components/f/forum/55852/resistor-and-capacitor-id/228950Fri, 30 May 2025 02:26:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:4d094e39-bca0-4b5f-9311-2b37bac23037RLM431Kmikemoo, I’m trying to reply on my phone so not sure how to tag you but, thank you! Yeah, that resistor is toasted, I can identify the last 3 bands but not the first. I’ve been scouring the www for a schematic but nothing comes up for the darn thing. If I had found oIt’s a 70’s omc accessories 2 wire tach, just signal input and ground. It was made by gale products and model # is 121614. If I do find one it will be a lot easier.https://community.element14.com/technologies/passive-components/f/forum/55852/resistor-and-capacitor-id/228948Fri, 30 May 2025 01:00:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:3074678a-ddc1-4c36-853c-b3ced66dc8cakmikemooFor Picture 1, you'd be better off searching for a schematic for that tach. It's fried beyond recognition for me. Picture 2: https://www.newark.com/cornell-dubilier/942c20p15k-f/film-capacitor-pp-0-15uf-2000v/dp/66K5447 Picture 3: https://www.newark.com/cornell-dubilier/940c20p1k-f/capacitor-polypropylene-pp-film/dp/66K5379https://community.element14.com/technologies/passive-components/f/forum/55852/resistor-and-capacitor-idFri, 30 May 2025 00:41:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:44c1f54e-5681-4c54-9159-b1d98268210fRLM431Hello New to the site. I’m no engineer and not an avid electronics enthusiast but I tinker with things. I can research and typically find an answer but I’m having a little difficulty with 2 capacitors and 1 resistor. They’re from an old marine tachometer I’m trying to bring back to life. I’m looking for some help identifying them and suitable replacements. I have attached a couple of pictures. Any help is very much appreciated. - RL /resized-image/__size/1280x720/__key/communityserver-discussions-components-files/36/IMG_5F00_1303.jpeg /resized-image/__size/1280x720/__key/communityserver-discussions-components-files/36/IMG_5F00_1316.jpeg /resized-image/__size/1280x720/__key/communityserver-discussions-components-files/36/IMG_5F00_1314.jpegcapacitorsobsoleteunknownresistorpolymerhttps://community.element14.com/technologies/passive-components/b/blog/posts/a-comprehensive-guide-to-capacitorsTue, 15 Apr 2025 12:53:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:c8496284-95fb-42dd-b8b0-4f9ac2394acdvijeth_dsCapacitors play an essential role in electrical and electronic circuits, along with resistors and inductors. Their ability to store electrical charges makes them crucial for power management, noise suppression, DC voltage biasing, and signal filtering. Capacitors also provide rapid charge and discharge cycles, making them a suitable alternative for energy storage (such as batteries). They are commonly found in industrial applications, including power factor correction (PFC), motor operation, and consumer appliances. This guide covers three types of capacitors from Panasonic: Conductive polymer electrolytic capacitors, Aluminum electrolytic capacitors, and Film capacitors. 2. Conductive Polymer Electrolytic Capacitors Conductive polymer electrolytic capacitors have ultra-low equivalent series resistance (ESR) and remain stable at high frequencies. They offer superior electrical performance by utilizing conductive polymer as the electrolyte. These capacitors also have longer operational lifespans compared to conventional aluminum electrolytic capacitors. Their unique construction makes them durable and ideal for applications requiring stable voltage regulation and high ripple current endurance. Panasonic offers various conductive polymer capacitors meeting various industrial requirements, including SP-Cap, POSCAP, OS-CON, and Hybrid capacitors. SP-Cap (Aluminum Polymer, Multilayer): Figure 1a shows a rectangular-shaped, aluminum electrolytic capacitor that uses a polymer as its electrolyte. SP-Cap is primarily used as input and output Capacitors for DC/DC converters due to its ultra-low ESR and low Equivalent Series Inductance (ESL), a long-life span, a compact size, a low profile, and high stability. It is suitable in final products such as servers, AC adapters, embedded boards, and SSDs. Figure 1a: Structure of SP-Cap Capacitors ( Source ) POSCAP (Tantalum Polymer): These capacitors have a sintered tantalum anode and a proprietary high-conductivity polymer cathode (Figure 1B). Tantalum Polymer capacitors can simultaneously maintain low Equivalent Series Resistance (ESR) with stable capacitance at high frequencies and temperatures. Panasonic's advanced Tantalum-Polymer Capacitor technology delivers some of the lowest ESR levels and excellent performance in high-frequency applications. POSCAP capacitors come in a range of compact package sizes, ensuring a small PCB footprint with high volumetric efficiency. Additionally, POSCAP capacitors offer high reliability and exceptional heat resistance, making them an ideal choice for digital, high-frequency devices and more. Figure 1b: Structure of POSCAP Capacitors ( Source ) OS-CON (Aluminum Polymer, Wound): These Solid Electrolyte Aluminum OS-CON Capacitors use aluminum and a highly conductive polymer material (Shown in Figure 1C) to offer low ESR, excellent noise reduction, superior frequency characteristics, and ripple current capabilities. Additionally, it has a long lifespan, with minimal ESR variation, even at low temperatures due to its solid electrolyte. It supports up to 7.5A ripple current and withstands voltages up to 100V. These capacitors are available in surface-mount and through-hole types. They are commonly used in power electronics, industrial automation, and computing applications. Figure 1c: Structure of OS-CON Capacitors ( Source ) Hybrid Capacitors (Aluminum Hybrid Polymer/Electrolyte): Hybrid Capacitors are known for their stable electric characteristics at high frequencies while maximizing reliability. The electrolyte consists of conductive polymer and electrolytic liquid (shown in Figure 1d) and has high endurance, low ESR, high tolerance for ripple currents, inrush currents, and elevated temperature. These Hybrid Capacitors are compact, allowing significant board space savings. Its "hybrid electrolyte" is used in a wide range of automotive and industrial applications such as BMS, ECUs, LED headlights, and ADAS systems. Figure 1d: Structure of Hybrid Capacitors ( Source ) Key Features of Conductive Polymer Electrolytic Capacitors Very low ESR and high-frequency characteristics Stable characteristics independent of temperature and voltage Higher safety than general tantalum electrolytic capacitors FAQs: What are aluminum electrolytic capacitors used for? Aluminum electrolytic capacitors are commonly used for power supply filtering, energy storage, and DC-link applications in power electronics due to their high capacitance values and voltage ratings. What are the disadvantages of aluminum electrolytic capacitors? They typically have a higher ESR than polymer capacitors. They are also prone to degradation over time due to electrolyte evaporation and have a limited lifespan in high-temperature environments. What is the lifespan of an aluminum electrolytic capacitor? The lifespan of an aluminum electrolytic capacitor depends on operating conditions, including rated voltage and temperature. It generally ranges from 1,000 to 10,000 hours or even more. How do aluminum electrolytic capacitors fail? Failures in electrolytic capacitors can occur due to electrolyte drying out. Excessive ripple current also causes overheating, and dielectric breakdown can lead to short circuits or leakage. Featured Products EEFGX0E471L Polymer Aluminium Electrolytic Capacitor, 470 µF, 2.5 V Buy Now 2R5TPE330M7 Polymer Aluminium Electrolytic Capacitor, 470 µF, 2.5 V Buy Now 16SVPK100M Polymer Aluminium Electrolytic Capacitor, 100 µF, 16 V Buy Now EEHAZA1E151B Hybrid Aluminium Electrolytic Capacitor, 150 µF, ± 20%, 25 V Buy Now 63SXV18M Polymer Aluminium Electrolytic Capacitor, 18 µF, 63 V Buy Now For our wide variety of Conductive Polymer Capacitors from Panasonic. Shop now 3. Aluminum Electrolytic Capacitors Aluminum capacitors are polarized electrolytic components where an aluminum oxide film forms the dielectric on the etched surface of an aluminum foil anode, while an electrolyte liquid serves as the cathode, as shown in Figure 2. This structure increases the electrode surface area through etching, enabling compact designs with high capacitance and reliability. Figure 2: Structure of an Aluminum electrolytic Capacitor ( Source ) Aluminum electrolytic capacitors have higher equivalent series resistance (ESR) than ceramic or film capacitors. However, advances in materials and design have improved ESR performance, making today’s generation of aluminum electrolytic capacitors suitable for power supply filtering, motor drives, and industrial applications. A rise in ESR can also affect the component's lifespan. Panasonic offers a wide range of aluminum electrolytic capacitors, including general-purpose, OS-CON (polymer-based), and hybrid variants , catering to diverse application requirements. General-Purpose Aluminum Electrolytic Capacitors: These capacitors use traditional aluminum electrolytes (Figure 2A). They provide a balance between high capacitance, miniaturization, and low ESR. General-purpose aluminum electrolytic capacitors offer high reliability, long lifespan, low impedance, and industry-leading high ripple current. They are commonly used in automotive electronics, industrial power supplies, and LED drivers. Figure 2A: Structure of General-Purpose Aluminum Electrolytic Capacitors ( Source ) Conductive Polymer Aluminum Solid Capacitors (OS-CON): These capacitors use a high-conductivity polymer electrolyte instead of a liquid (Figure 2B), providing ultra-low ESR, excellent noise reduction, and superior frequency characteristics. OS-CON capacitors offer a longer lifespan, and due to the presence of a solid electrolyte, there is minimal impact on ESR variation, even at low temperatures. They are ideal for applications such as LED backlighting, industrial automation, and DC-DC converters in servers and base stations. Figure 2B: Structure of Conductive Polymer Aluminum Solid Capacitor (OS-CON) ( Source ) Hybrid Aluminum Electrolytic Capacitors: These capacitors make use of hybrid electrolytes consisting of a conductive polymer and electrolytic liquid, as shown in Figure 2C. This helps them to achieve low ESR, withstand high voltages, and high reliability. Their high ripple current capability, superior thermal endurance, and vibration resistance (including anti-vibration models) make them well-suited for automotive, industrial, and high-power applications. With a compact design, they enable miniaturization while keeping performance. Figure 2C: Structure of a typical Hybrid Aluminum Electrolytic Capacitor ( Source ) FAQs What is the difference between polymer and electrolytic capacitors? Traditional or standard aluminum electrolytic capacitors use a liquid electrolyte, while polymer capacitors use a solid conductive polymer. Polymer capacitors offer lower ESR, higher ripple current tolerance, and greater stability over temperature fluctuations, but they may have lower voltage ratings than standard electrolytic capacitors. Can a polymer capacitor substitute for an electrolytic capacitor? Only under certain conditions, but not always. The voltage and capacitance ratings may differ between the two types of capacitors. This holds true even though polymer capacitors offer better performance in ESR and frequency characteristics. If you continue with the substitution, ensure that the new capacitor meets the voltage, capacitance, and ripple current requirements of the application. What are the disadvantages of polymer capacitors? Polymer capacitors are often more expensive than traditional electrolytic capacitors, even when they have the same capacitance and voltage. The lower voltage ratings of polymer capacitors also make them unsuitable for high-voltage applications. Additionally, exposure to moisture can lead to desorption, package cracking, dielectric damage, and increased ESR degradation. How long do polymer capacitors last? Typically, they have a longer lifespan than liquid electrolytic capacitors. Some Panasonic OS-CON series capacitor models are ideal for long-term industrial applications as they can last up to 20,000 hours at 105°C. Featured Products ECEA0GKA101B Electrolytic Capacitor, 100 µF, 4 V Buy Now EEHZA1E470P (Hybrid) Hybrid Aluminium Electrolytic Capacitor, 47 µF, ± 20%, 25 V Buy Now EEUFR1E471B Electrolytic Capacitor, 470 µF, 25 V Buy Now EEE0GA101SR SMD Aluminium Electrolytic Capacitor, Radial Can - SMD, 100 µF, 4 V Buy Now 16SVPG1200M (OS-CON) Polymer Aluminium Electrolytic Capacitor, 1200 µF, 16 V Buy Now For our wide variety of Aluminum Electrolytic Capacitors from Panasonic. Shop now 4. Film Capacitors Film capacitors are a highly reliable capacitor that uses an insulating plastic film as the dielectric material. These capacitors are primarily made of PP (polypropylene), PET (polyethylene terephthalate), PPS (polyphenylene sulfide), and PEN (polyethylene naphthalate) as dielectric materials. They offer higher insulation resistance than ceramic and aluminum electrolytic capacitors, along with a greater ability to keep stored electricity. Characterized by excellent volumetric efficiency, high reliability, high insulation resistance, and low ESR and ESL, they are commonly used in high-frequency applications, power factor correction, and start-run motor circuits. Additionally, film capacitors experience lower energy loss during charging and discharging compared to other capacitor types. PP-based film capacitors not only operate with minimal losses but also maintain their efficiency despite temperature fluctuations. The primary cause of deterioration in film capacitors is electrode oxidation. Panasonic has enhanced moisture resistance through "encapsulation technology" and "weatherproof technology." Encapsulation technology minimizes moisture penetration into the internal element by optimizing exterior case materials, filling resin, and high humidity-resistant metallic coatings. Weatherproof technology further prevents electrode erosion by utilizing highly moisture-resistant evaporated metal and advanced processing techniques for internal electrodes, as illustrated in Figure 3. Figure 3: Structure of Film Capacitor ( Source ) Panasonic offers a wide lineup of film capacitors to meet diverse application requirements in electronic equipment, automotive, industrial and infrastructure, and AC motor use . The company enhances capacitor longevity and reliability in harsh environmental conditions by integrating advanced manufacturing techniques, such as segmented metalized film technology and encapsulation methods. 1) Film Capacitors for Electronic Equipment Use: These capacitors are used in power supplies, consumer electronics, and industrial systems. Panasonic provides a wide selection of film capacitors (Electronic Equipment Use), including radial lead-type products for mid/high voltage and high frequency, as well as power supply noise suppressors. For low or mid-range voltage, surface mount-type products are used. Radial Lead-Type Capacitors (ECWFA, ECWFD, ECWFE Series): Designed specifically for high-voltage and high-frequency applications Safety-enhanced design featuring Panasonic's original vapor deposition pattern technology Integrated fuse function to prevent catastrophic failures Surface Mount-Type Capacitors (ECHU(X), ECWU(X) Series): Improved electrode structure to prevent chip standing during reflow soldering Enhanced adhesion to suppress electrode oxidation, improving long-term reliability 2) Film Capacitors for Automotive, Industrial, and Infrastructure Use: These capacitors are engineered for high-voltage and high-current applications, used as smoothing, snubbers, and noise suppressors in xEV and industrial inverters. AEC-Q200 compliant for automotive applications High resistance to moisture and environmental stress Built-in safety features using proprietary vapor deposition technology 3) Film Capacitors for AC Motor Use: Designed specifically for motor-running applications, the PMF series capacitors improve power factor efficiency in motor-running circuits of household appliances such as air conditioners, refrigerators, and washing machines. Integrated fuse function ensuring higher safety Certified to global safety standards (UL, CSA, JIS, EN60252-1) Enclosure designed for long lifespan and flame resistance Fuse Function Technology :Unlike traditional aluminum electrolytic capacitors, which open upon failure, film capacitors tend to short-circuit, posing a potential hazard. To mitigate this risk, Panasonic has developed a fuse function for its film capacitors by incorporating fragile layers of vapor-deposited aluminum slits at various points in the dielectric material. These slits localize failures, as shown in Figure 4, limiting damage to only a few sections of the capacitor. If too many of these areas fail rapidly, the capacitor will open in a fail-safe manner. Figure 4A: Construction of inner electrodes (b) Operation of fuse function ( Source ) How it Works: If a local breakdown occurs due to high stress, only the affected segment becomes an open circuit, preventing further damage. The capacitor continues to function, and permanent failure (such as fire or smoke) is averted. This self-healing function also increases the capacitor's functional lifespan, making fuse function technology ideal for xEV inverters, industrial power systems, renewable energy converters, and other high-stress applications. FAQ What is a film capacitor used for? Film capacitors, known for their excellent stability, reliability, and low-loss operation, are used in high-frequency circuits, power factor correction, motor-running applications, noise suppression, industrial inverters, and automotive electronics. Are film capacitors better than electrolytics? Film capacitors offer higher insulation resistance, better stability, and longer lifespans compared to electrolytic capacitors. However, electrolytic capacitors provide higher capacitance per volume, making them more suitable for bulk energy storage. Are film capacitors suitable for audio applications? Yes, film capacitors are ideal for high-end audio systems and signal processing due to their low distortion, minimal loss, and excellent high-frequency response. What are the disadvantages of film capacitors? Compared to ceramic capacitors, film capacitors are larger in size and more expensive for high-capacitance values. They also have limited availability in extremely high capacitance ranges and may suffer catastrophic failure under demanding conditions. Featured Products ECWFA2J104J General Purpose Film Capacitor, Metallized PP, Radial Box - 2 Pin, 0.1 µF, ± 5%, 141 V, 630 V Buy Now ECWFE2W105J General Purpose Film Capacitor, Metallized PP, Radial Box - 2 Pin, 1 µF, ± 5%, 84 V, 450 V Buy Now ECHU1124JC9 General Purpose Film Capacitor, Metallized PPS Stacked, 1913 [4833 Metric], 0.01 µF, ± 5%, 40 V Buy Now EZPV1B106MTB Power Film Capacitor, Metallized PP, Radial Box - 4 Pin, 10 µF, ± 10% Buy Now EZPE50206LTA Power Film Capacitor, Metallized PP, Radial Box - 2 Pin, 20 µF, ± 10% Buy Now For our wide variety of Film Capacitors from Panasonic. Shop now For more Capacitors from Panasonic Shop Now About the Sponsor Equipping, enabling, inspiring: About Panasonic Industry Europe A common purpose: as part of Panasonic Corporation’s global business, people at Panasonic Industry strive for continuous innovation and share the company’s mission and vision - shaping the future for the better. To take engineering to the next level, Panasonic Industry researches, produces and supplies technologies for a vast range of industries. For more information, click hereHybrid Capacitors (Aluminum Hybrid Polymer/Electrolyte)Aluminum Electrolytic CapacitorsWound)AC motor useFilm CapacitorsMultilayer)panasonicSP-Cap (Aluminum PolymerConductive Polymer Electrolytic Capacitorselectronic equipmentautomotiveOS-CON (Aluminum Polymere14-PanasonicPOSCAP (Tantalum Polymer)industrial and infrastructurehttps://community.element14.com/technologies/passive-components/f/forum/55226/any-help-on-the-following-low-pass-filter-scenario-would-be-very-much-appreciated/225003Sat, 02 Nov 2024 09:05:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:32ac3ad0-4264-48a4-bc85-02df128c0a4aJames123Setting the cutoff frequency of the filter to 60Hz should be sufficient, as this is the standard frequency for alternating current. If only simple low-pass filtering is needed, an RC filter is enough; it is the simplest passive low-pass filter.https://community.element14.com/technologies/passive-components/f/forum/55226/any-help-on-the-following-low-pass-filter-scenario-would-be-very-much-appreciated/224850Fri, 25 Oct 2024 08:02:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:d4a376be-3402-43a9-918c-51b17475f7b2michaelkellettStrewth ! Thanks kmikemoo Science: As far as RF is concerned it will make little difference to the electric field just above the "silver" sheet if you connect the ground wire or not. Why - because the inductance of the wire and the mains wiring in the house will have a high impedance to ground at RF. The usual analogy in EMC testing is that grounding a large conducting structure with a wire longer than couple of inches is like trying to push an elephant with a piece of wet string. Nonsense: (you were warned !!!) https://www.youtube.com/@groundedwellness4359 MKhttps://community.element14.com/technologies/passive-components/f/forum/55226/any-help-on-the-following-low-pass-filter-scenario-would-be-very-much-appreciated/224848Fri, 25 Oct 2024 00:29:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:b645240d-90d8-4964-b34c-198a1bedc787dougwThe resistor is all you need for ESD. That capacitor is big enough to give you a jolt if you have built up static electricity. The cap may have bled off to ground but if you are charged up it will allow rapid current inrush as you touch the sheet and the cap charges up to your potential (possibly causing a spark) Other notes: Ground by definition has no AC on it, but of course it depends on where you measure from and if there is current flowing in the ground causing IR voltages. As mentioned a polarized cap isn't ideal for a situation where it is not clear what voltage polarity will be applied. The shield in the diagram is just ground - no part of it is floating. I'm not clear what the "floating" lead is connected to off in the direction of the sheet, but if it is the conductive sheet, then the rest of the circuit is shorted out and not doing anything. If you are worried about ground faults causing a shock, maybe consider a ground fault interrupter (GFI).https://community.element14.com/technologies/passive-components/f/forum/55226/any-help-on-the-following-low-pass-filter-scenario-would-be-very-much-appreciated/224846Thu, 24 Oct 2024 23:31:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:9596f92a-0b03-474b-a4ea-382bc1c82546anniel747Why the polarised capacitor?https://community.element14.com/technologies/passive-components/f/forum/55226/any-help-on-the-following-low-pass-filter-scenario-would-be-very-much-appreciated/224845Thu, 24 Oct 2024 23:29:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:dbf1526c-658f-445d-af04-40cff97dab65anniel747How did you measure that noise?https://community.element14.com/technologies/passive-components/f/forum/55226/any-help-on-the-following-low-pass-filter-scenario-would-be-very-much-appreciated/224843Thu, 24 Oct 2024 21:56:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:cb99011f-a3a7-4105-95c0-60d0441492edk.morrowIt is the same concept as hooking up an ESD mat except I'm trying to filter any and all noise on the cable from the wall outlet ground to the ESD mat.https://community.element14.com/technologies/passive-components/f/forum/55226/any-help-on-the-following-low-pass-filter-scenario-would-be-very-much-appreciated/224842Thu, 24 Oct 2024 21:49:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:d14b3b8b-779d-479b-8cbf-8f1652d993e5k.morrowI am trying to eliminate any AC noise that is on the house ground from going up the shielded cable to the conductive bed sheet. I have attached a picture of what I want to do. community.element14.com/.../Low_5F00_Pass_5F00_filter_5F00_concept.pdfhttps://community.element14.com/technologies/passive-components/f/forum/55226/any-help-on-the-following-low-pass-filter-scenario-would-be-very-much-appreciated/224840Thu, 24 Oct 2024 20:12:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:d0218079-9258-4e74-9f36-8e52c38f92d2battlecoder+1 to this. I'm absolutely not an expert, but if the cable is connected to ground, all "radiation" it might be subjected to, will be grounded just like any RF emissions picked up by the sheet itself. The cable won't be any different from the sheet, in a way, so I'm not sure any "shielding" or filtering is required at all.https://community.element14.com/technologies/passive-components/f/forum/55226/any-help-on-the-following-low-pass-filter-scenario-would-be-very-much-appreciated/224839Thu, 24 Oct 2024 19:52:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:e3f44264-4642-4e0e-91e4-1166dcec4cdfkmikemoomichaelkellett This is actually a thing. https://www.amazon.com/Grounding-Silver-Conductive-Earthing-Better/dp/B0CJJ8G1M1https://community.element14.com/technologies/passive-components/f/forum/55226/any-help-on-the-following-low-pass-filter-scenario-would-be-very-much-appreciated/224837Thu, 24 Oct 2024 18:34:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:fc188ab3-3d9d-4c8c-b995-5dee65648812dougwIf the only connection is ground, what are you filtering with respect to? I'm not sure you can do better than a direct connection to ground to minimize capacitive, inductive or RF coupling to the sheet.. Is ESD of concern? (because that would have a different solution) If there is no other specific ground reference, an in-line inductor might do something to minimize AC with respect to the natural ambient ground.https://community.element14.com/technologies/passive-components/f/forum/55226/any-help-on-the-following-low-pass-filter-scenario-would-be-very-much-appreciated/224834Thu, 24 Oct 2024 17:13:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:ee5425ae-1517-4732-a977-3b647ebbef13michaelkellettPlease also explain "bed sheet" is this a sheet on a bed for sleeping - if so there could be problems with safety. MKhttps://community.element14.com/technologies/passive-components/f/forum/55226/any-help-on-the-following-low-pass-filter-scenario-would-be-very-much-appreciated/224832Thu, 24 Oct 2024 16:33:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:06643ce0-3db1-4515-aeb8-8abc3432dc05anniel747A schematic of your intended connections please.https://community.element14.com/technologies/passive-components/f/forum/55226/any-help-on-the-following-low-pass-filter-scenario-would-be-very-much-appreciatedThu, 24 Oct 2024 16:25:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:e4d75284-4064-40ef-90f2-b7047d03dfedk.morrowObjective: To build a shielded cable with a passive low pass filter to be used for connecting the ground connection of a typical US 120V socket or from an earth ground rod to a bed sheet with silver threads in it for grounding or earthing purposes. The purpose is for the filter to eliminate any/all AC noise from going up the shielded cable and getting to the bed sheet. For testing possible filter configurations I have a Fluke 179 True RMS multimeter and an old Hitachi V-152F-15MHz Oscope and a BK 3011B - 2 MHz Function generator. My thoughts are to use a single resistor with an electrolytic capacitor so when measured with the multimeter in one direction I would measure the resistor value and in the other direction I would measure an infinite impedance. I have explored several online low pass filter calculators: www.redcrab-software.com/.../RC-Low-Pass-Filter sim.okawa-denshi.jp/.../CRlowkeisan.htm learningaboutelectronics.com/.../Low-pass-filter-calculator.php markimicrowave.com/.../ I have a few questions: 1. Do I make the filter with a cutoff frequency of 60Hz or something very low like 1Hz or less? 2. Is an RC filter best or use an RLC or some other config? 3. Could the filter be better with a 2nd order (or 3rd, or 4th ...?). 4. For the filter connected to a shielded cable, are surface mount components better to use than leaded components? Thank You!!https://community.element14.com/technologies/passive-components/w/quiz/4566/inductors-quiz-resourceTue, 04 Jun 2024 18:12:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:52f95f1c-2cdf-4b62-88d3-4a3d67ac82f2pchansponsored by Passive Components | Return to Quiz Question 1: High-Frequency Magnetic Components by Marian K. Kazimierczuk Question 2: RF Power Amplifiers by Marian K. Kazimierczuk Question 3: Transformers and Inductors in Power Electronics: Theory, Design and Applications by W.G. Hurley, W.H. Wölfle Question 4: Power Inductors - 8 Design Tips Question 5: Transformers and Inductors in Power Electronics: Theory, Design and Applications by W.G. Hurley, W.H. Wölfle Question 6: Transformers and Inductors in Power Electronics: Theory, Design and Applications by W.G. Hurley, W.H. Wölfle Question 7: Transformers and Inductors in Power Electronics: Theory, Design and Applications by W.G. Hurley, W.H. Wölfle Question 8: Inductor Current Rating: ANP019: The Sham of the High Rated Current Question 9: Transformers and Inductors in Power Electronics: Theory, Design and Applications by W.G. Hurley, W.H. Wölfle Question 10: Transformers and Inductors in Power Electronics: Theory, Design and Applications by W.G. Hurley, W.H. Wölfle Question 11: Transformers and Inductors in Power Electronics: Theory, Design and Applications by W.G. Hurley, W.H. Wölfle Question 12: Peak Current Proof Input Filter with Multilayer Power Suppression Bead WE-MPSB Question 13: Transformers and Inductors in Power Electronics: Theory, Design and Applications by W.G. Hurley, W.H. Wölfle Question 14: Accurate Inductor Loss Determination using REDEXPERT Question 15: Transformers and Inductors in Power Electronics: Theory, Design and Applications by W.G. Hurley, W.H. Wölfle Question 16: WE-PD SMD Shielded Power Inductor (1210) Question 17: Transformers and Inductors in Power Electronics: Theory, Design and Applications by W.G. Hurley, W.H. Wölfle Question 18: Transformers and Inductors in Power Electronics: Theory, Design and Applications by W.G. Hurley, W.H. Wölfle Question 19: Transformers and Inductors for Power Electronics: Theory, Design and Applications By W.G. Hurley, W.H. Wölfle Question 20: Series and Parallel Inductors Question 21: SMD Shielded Power Inductor Question 22: WE-PD SMD Shielded Power Inductor (6033) Question 23: Transformers and Inductors for Power Electronics: Theory, Design and Applications By W.G. Hurley, W.H. Wölfle Question 24: Transformers and Inductors for Power Electronics: Theory, Design and Applications By W.G. Hurley, W.H. Wölfle Question 25: WE-HCI Power Inductorwürth_electronikwurth electronikwürthinductors quiz resourcepassive componentspassive_componentsinductors