When a mechanical switch closes it's contacts typically do not close "cleanly" and tend to bounce or chatter. This rapidly switching signal could be misread in certain situations so it is usual to attempt to reduce this bouncing to ensure a clean switch detection. the danger is that if the switch is not de-bounced you can detect multiple events from one opening or closing. Can be accomplished using analog circuits or digital circuits.
Questions tagged [debounce]
169 questions
1
vote
3 answers
Debouncing this Rotary Encoder Switch
I have this rotary encoder and I am not quite sure how to debounce the internal push button switch (shown in the SW02 diagram).
Any help would be appreciated, I'm a noob with this stuff.
EDIT
I would like to implement a hardware debounce
My primary…
Dan
- 113
- 1
- 4
0
votes
1 answer
Debounce and reduce voltage on a 24V switch
I am familiar with the debounce of a switch connected to GND and swinging between the same voltage levels of the logics:
simulate this circuit – Schematic created using CircuitLab
But I need a circuit to debunce and reduce the voltage from a 24V…
Marco
- 63
- 6
0
votes
1 answer
improving this debouncing circuit
I'm using the circuit to debounce a momentary push button switch (and drive a relay). Probably the switch is not that great (it is a stomp switch) so I got a lot of bouncing, and the end result is not reliable.
do you think there is a way to improve…
Dimitri Petrucci
- 461
- 6
- 18
0
votes
1 answer
De-bounce circuit?
I have a laser sensor that randomly triggers on sunlight.
The signal is fed to an opti-coupler to a FTDI chip.
I am looking for advice for the easiest solution to take out these false positives which can be up to 250 ms.
The problem appears to be…
Floggedhorse
- 131
- 5
0
votes
1 answer
Do we need to debounce the switch for key release
I understand that key debounce has to be considered either in Hardware (HW) or in software (SW) when we press a switch (to avoid make and breaks). Do we need to take care of key debounce even for key release? (make and break is possible even during…
Rajesh
- 229
- 1
- 7
0
votes
1 answer
Contact Bounce - Simple Debounce RC Circuit Question
I got this circuit from an example.
simulate this circuit – Schematic created using CircuitLab
What kind of circuit is this? I know its an RC circuit and I also know that its designed to be a simple switch debounce circuit.
Is it also a kind of…
Zero
- 173
- 1
- 11
0
votes
2 answers
Non-TTL debouncing
This is probably simple, but I'm not an ee.
A closet with 4 doors, each has a normally-closed pushbutton connected to 5V source on one end and (to the same) 5V relay which controls the 220V (AC) of the room lights. So the doors connected to the…
LearnCPP
- 1
- 1