Jun 2, 2019 · 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 …

Aug 2, 2016 · 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 varied …

Oct 13, 2018 · 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 …

Mar 4, 2024 · What is the capacitive load and how can capacitive load be simulated? I want to monitor the current and voltages in the simulation by powering a capacitive load from the …

Apr 24, 2025 · 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 …

Apr 17, 2024 · 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 …

Dec 13, 2024 · Is there any simple circuit with Single RLC components which has resonant frequency not equal to (LC)^-1/2? Can someone please help with such examples?

Jul 7, 2010 · As for the capacitive touch circuit, I remember reading a QST article of a guy who designed a Morse Code Keyer with capacitive initiation (it had everything you described). I'm …

Nov 3, 2020 · 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 …

Jun 18, 2025 · 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 …