How to operate a capacitive touch switch using relay contacts.

FTC334F is a professional capacitive touch button processing chip. It adopts the latest high-precision digital capacitance measurement technology and can prevent various

2024 Oct 30

What is the capacitive load?

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

2024 Feb 18

Adjusting the electrical length of antennas

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

2026 Feb 12

Capacitive touch trigger as an isolated system

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

2025 Oct 17

Capacitive discharge welder

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

2024 Mar 19

Why capacitive reactance reduces inductive reactance (by

Hi I am newbie here! I understand why capacitive reactance reduces inductive reactance mathematically, having a result of zero at resonant frequency. But how to physically

2024 Jan 10

Help Wanted Reviewing Capacitive Moisture Sensor

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 student, I

2024 Sep 21

What constitutes a "capacitive" load? | All About Circuits

I am working on a power supply design but I suppose this is a general question that most people will be able to answer. I am in need of purchasing a load switch from a company

2024 Sep 07

Inductive, Capacitive, and Resistive Circuits

Working with resonant circuits and when Xl = Xc the circuit is purely resistive. What I am having a problem picturing is what happens at f1 and f2. One is capacitive f1 and

2026 Feb 21

Best Way to Activate a Touch Switch Without Touching It

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

2024 Mar 14

View/Download Capacitive Super Battery [PDF]

PDF version includes complete article with source references. Suitable for printing and offline reading.