Switch debouncer

Posted on Aug 2, 2012

The circuit in Figure 1 produces a single debounced pulse each time you press S1. Moreover, the circuit uses only logic power from the remote pull-up resistor, R2. You can use the circuit to detect when a key is pressed in a nonenergized device, such as a device in a system that`s just coming up from standby.

The circuit operates as follows: Assume that you have not yet pressed S1 and that C1 is in a charged state. Under these conditions, R1 drives IC1 toward VSS (ground), causing the IC to consume virtually no power. This action allows VOUT to remain nea

Leave Comment

characters left:

New Circuits



Popular Circuits

Neon Desk lamp
LED Voltmeter
10 Band Audio Equalizer
40W 4 channel audio amplifier
Connect Nokia 3310 LCD to LPT port
Purpose of SCRs in Power Factor Circuit
dtmf decoder
You Have Mail!
carrier current fm receiver
Crystal Locked FM Bug
Two Relay-Based Motorcycle Alarm Circuits
Digital Voltmeter