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Capacitive touch buttons not seeing touch

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 displays check the

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 and the

Inductive, Capacitive, and Resistive Circuits

Resonance when inductive reactance = capacitive reactance. leaving resistance the only form of impedance. See effect of series and parallel tuned circuit. Max.

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 interferences,

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 between 10 -

SPI Communication

SPI is a serial peripheral interface which is a 3 or 4 wire (MISO, MOSI, CLK and CS) system to transfer data between ICs. SCI is an serial communications interface to send data via a

Capacitive Voltage Divider

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 transformers to

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 battery, but I am

Capacitive Speakers

The capacitive value of the speaker is an important characteristic for the amplifier circuit of the speaker. “Piezoelectric means capacitive load” Most amplifier IC''s are developed for

How to calculate current limitation in an AC capacitive drop circuit

The problem with getting higher current out of a simple capacitive dropper is the inherent conflict between two operating conditions: 1) Inrush current, discharged capacitor, peak voltage

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