I was prompted to do this series of experiments by neuromodulator interesting blog posts. The puzzling thing abut his results is the apparent linking of rate of change of temperature with leakage current. I set up my own test arrangement using a...
Results: Capacitance temperature dependence The first thing that I wanted to test was how the temperature affects the capacitance of the different capacitors. I performed a temperature sweep from ambient temperature to ~80 °C, and then back to a...
Introduction Ideal capacitors can be defined with the following simple equation: In this design challenge I will explore parasitic elements of polymer capacitors that are not modeled by the previous equation, in particular I will explore ho...
Würth the effort!This challenge is an investigation about the viability of polymer capacitors and their use with vintage electronics.With the Panasonic SMT capacitor portion completed I was still looking for viable Polymer capacitors in through hole ...
LM3940-3.3 Linear Voltage Regulator With Polymer Capacitors The LM3940-3.3 is a linear voltage regulator that whittles down 5V to 3.3V. This part was introduced for the proliferation of 3.3V parts and logic in the early 1990's.At first...
Further Improvements The photo shows the modifications I applied but this would not normally be done as a standard repair.It was purely an experiment applying first principles to improve system stability and reduce EMI. The modifications in...
The element14 Experimenting with Polymer Capacitors Challenge is an opportunity to “experiment, test, breadboard, or just play around with Polymer Capacitors” and then show what was learned. In this 3rd and final post a Panasonic Polymer Capacitors f...
Introduction These are the test results from my experiments with changing out the electrolytic capacitors in the decoupling circuit of my current amplifier with alternative polymer capacitors. The test set up is described in the original bl...
Contents
Contents
01. Rating and Parameters of Polymer Capacitor in the Kits.
02. Simulation of AD8428 Instrumentation Amplifier by ADI
03. Schemtic Design and PCB Design
04. PCB making and Solding
05. Test with MKR1000
06. Conclusion
&n...
This is my unofficial entry into the Experimenting with Polymer Capacitors challenge - I never applied for the capacitor kit, as my little escapades into electronics are very ad hoc and I felt that a kit of capacitors would go to waste on me, and it ...
Can we remove this noise using polymer capacitors or by other means? As a random hack without applying any science I inserted some polymer capacitors at random into the PDN to observe any effects.I chose the capacitors with the most convenient p...
I've used a number of different buck converters to experiment with small solar panels. Since this is a relatively short challenge I decided to modify an existing converter circuit rather than trying to design and build a new one. Here...
The element14 Experimenting with Polymer Capacitors Challenge is an opportunity to “experiment, test, breadboard, or just play around with Polymer Capacitors” and then show what was learned. In this second post the outcome of the ex...
The surface mount (SMD) capacitors used in this challenge are difficult to connect to instrumentation without soldering them into a test circuit. To facilitate some of my scope and pulse generator measurements I made a simple test fixture that ...
Experimenting the performance of Polymer Capacitors in Instrumentation Amplifier for Medical 1. IntroducionMedical application like ECG use instrumentation amplifier to condition small signals in the presence of large common-mode voltages ...
I was most surprised to see my name in the Road Testers list.Totally unexpected!Many thanks to the sponsors and element14! I have encountered a lot of vintage electronic devices that make loud noises or produce smoke and glowing fireballs when p...
ESR70 measurementsThe first thing that I wanted to do was to use the ESR70 to measure the various capacitors in the kit. This proved a bit challenging since these are all SMD parts. The smaller flat capacitors were difficult even with the...
I built a second set of circuits using MC78L05ACP regulators in a T092, and powered them up using a 9V battery.When I checked the outputs with no load (each powered separately), I found 1.9mv of noise on the non-poly cap circuit, and a 26mv 2.5khz os...
I'm starting out with a simple regulator circuit as shown below:I built 2 circuits on prototyping pcb material, one with my regular caps, and one with the poly caps.When I checked the first circuit, the regulator was working fine with about +_2mv...
I was lucky to be selected as one of the sponsored challengers. I received my kit last Tuesday but I was out of town, so I'm just getting started today. What's in the kitIncluded in the kit was a Peak atlas ESR+ model ESR70 meter a...
"Give a man a capacitor and he'll charge for a day, teach him to use an ESR meter and he'll spend all afternoon measuring stuff......" I compared the atlas ESR+ readings to my Fluke 87 DMM on a couple of my current hot film pow...
IntroductionThis design challenge is about polymer capacitors - highlighting their features and applications. It is quite different to be focusing on a passive component in a design challenge, but it is a good exercise to become more familiar with po...
The element14 Experimenting with Polymer Capacitors Challenge is an opportunity to “experiment, test, breadboard, or just play around with Polymer Capacitors” and then show what was learned. I am grateful to be one of the competitors selected t...
Hi all,My name is Pete and I have been a maker for many years. Well, I have been a "Breaker" for much longer!I though I could turn my passion into a job, so I completed a Degree in Electrical and Electronic Engineering. My experiment is to inves...
