Capacitive discharge welder - All About Circuits
2016年8月2日 · Hello All, I am trying to build a simple capacitive builder. Part of the circuit is shown as below The gate drive gets signal from a microcontroller. The pulse time can be …
Capacitive touch trigger as an isolated system - All About Circuits
2019年6月2日 · I need a way to trigger a capacitive touch screen device (like a tablet) using an isolated system without touching it. For example a kid places a small gadget on a tablet screen …
Help Wanted Reviewing Capacitive Moisture Sensor
2025年12月20日 · I designed this capacitive moisture sensor, I'm not sure if it will work. I'm posting it here to see if anyone can find anything I should fix before I order the PCB (I'm a …
How does the Colpitts oscillator works? | All About Circuits
2025年4月24日 · Hello everyone! I'm trying to understand how the Colpitts oscillator works. Could someone explain the roles of the capacitors labeled C and C3 in the circuit? What are they …
Best Way to Activate a Touch Switch Without Touching It
2024年4月17日 · Hello there, I'd like to activate a touch switch electronically. It's a capacitive type switch. There can be no wires connected to the capacitive switch, it must come from …
Adjusting the electrical length of antennas - All About Circuits
2025年6月18日 · This capacitive reactance can be compensated for by introducing a lumped-inductive reactance, as shown in view A. Similarly, if the antenna is too long for the …
What constitutes a "capacitive" load? | All About Circuits
2020年11月3日 · In a reactive load, the inductive reactance and the capacitive reactance have the opposite sign. So if the inductive reactance is 10 Ω, and the capacitive reactance is 12 Ω. then …
Capacitive touch buttons not seeing touch - All About Circuits
2018年10月13日 · This can be do to a lot of factors: your fingers are dirty/wet/in scars. The capacitance of the object to touch with (fingers) is not high enough. As far as I guess, these …
Capacitive Voltage Divider - Downsides? - All About Circuits
2009年10月17日 · Capacitive voltage dividers are really only usable for AC circuits. Capacitors block DC, and pass the effects of AC. However, attempting to use capacitors in the place of …
Xc vs. Xl reactance - All About Circuits
2009年11月5日 · The Inductive reactance and the capacitive reactance were summed, and if I recollect, we used the Pythagorean theorem to calculate the total impedance. -- I might be …