https://community.element14.com/technologies/open-source-hardware/What is the connection between Open Source Hardware and traditional engineering companies. How can professionals & hobbyists learn from each other. What can hardware developers learn from Open Source Software.en-USTelligent Community 12https://community.element14.com/technologies/open-source-hardware/m/managed-videos/151525Sat, 18 Jul 2026 08:27:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:824c46c9-eeb0-45ae-8680-8acd0b5b5075Jan CumpsIn this video, we will discuss the sixth example of a BJT differential amplifier. In this example, the differential amplifier is biased using a cascode current source, which ensures the tail current source connected to the two emitters of the diff...nodal analysisthevenin nortonwiskundecalculuscircuitscontrol systemsbode plotRegeltechniekComplexe getallenanalog electronicsknooppuntsmethodesteady-state analysislinear algebrpower amplifierssuperpositionmatlabstabilitydifferential equtionsinleiding elektronicaSPICE PID Controllerelectronicselectrical engineeringelectric circuitssimulinkmesh current analysissource transformationelektrische netwerkenhttps://community.element14.com/technologies/open-source-hardware/f/forum/57080/open-source-hardware-camp-2026-sat-29-08-sun-30-08-hebden-bridge-england/236406Thu, 16 Jul 2026 21:35:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:70433eac-fca9-486a-a128-58e89c362d0eWorkshopshedIt does look like a good event and I might do the next one, after this onehttps://community.element14.com/technologies/open-source-hardware/f/forum/57080/open-source-hardware-camp-2026-sat-29-08-sun-30-08-hebden-bridge-england/236386Wed, 15 Jul 2026 12:57:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:b2417302-57b7-4f49-9772-d4676006fe24michaelkellettYou would have to check on the link in the original post. Previous events at Hebden Bridge are very much in person and hands on - you wouldn't get much out of them remotely. MKhttps://community.element14.com/technologies/open-source-hardware/f/forum/57080/open-source-hardware-camp-2026-sat-29-08-sun-30-08-hebden-bridge-england/236385Wed, 15 Jul 2026 12:43:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:f94f801f-7bff-498e-befe-68382349e178rscWill any events be streamed online? I'm about 6,000 Km from there. We are living in a digital world...............https://community.element14.com/technologies/open-source-hardware/b/blog/posts/discrete-difference-amplifier---ac-analysis-gain-and-bandwidthTue, 14 Jul 2026 18:26:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:227467c7-bc63-4a2b-92f2-a14104882a78Jan CumpsThis is the DC gain and BW analysis of the difference amplifier module that shabaz designed for a Direct Conversion Receiver . I'm searching for these points: gain at 1 kHz (approx. mid of bandwidth) -3 dB frequencies I use Vrms values in the post - common for audio circuits. When measuring one of the differential channels, I tie the other to ground. Specs: Gain: ~10 dB Bandwidth (-3 dB): ~30 Hz to 40 kHz (approximate) Measurements: IN1: gain (1 kHz): 9.2 dB, bw (-3 dB): 30 Hz - 80 kHz IN2: gain (1 kHz): 9.3 dB, bw (-3 dB): 30 Hz - 80 kHz shabaz published the KiCad project on GitHub , including simulation. You could load it into KiCad and check if the small signal simulation and my measurements match ... For all blog posts in this series, click here spreadsheet: community.element14.com/.../differenceamp.zipsimple_dcrhttps://community.element14.com/technologies/open-source-hardware/b/blog/posts/discrete-difference-amplifier---dc-analysisSat, 04 Jul 2026 15:10:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:b054358b-d8dc-4ff2-bf1e-a7dd9b6f346fJan CumpsThis is the DC analysis of the difference amplifier module that shabaz designed for a Direct Conversion Receiver . Before going into the small signal AC analysis, it's interesting to see how the amplifier behaves in steady state (DC). I measured all nodes on the amp, with the inputs shorted. The output was left open*. Voltages (annotated in black on the schematic) were measured. transistor voltage bias (orange) and currents (brown) were calculated based on the voltages measured. While it doesn't show the dynamic behaviour, it shows how each of the submodules of this design is set up. shabaz published the KiCad project on GitHub , including simulation. You could load it into KiCad and check if the steady state simulation and my measurements match ... *except for an oscilloscope probe. For all blog posts in this series, click heresimple_dcr