Timeline for How is debounce achieved in (EM) relay?
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 1, 2015 at 16:14 | vote | accept | RinkyPinku | ||
| Jun 1, 2015 at 16:05 | comment | added | WhatRoughBeast | Why should debouncing be required? Because the contacts are pieces of metal - when you whack them together, they bounce apart. This produces an essentially random series of contact opening and closing which can last tens of milliseconds. I've seen it and dealt with it. Using an RC/Schmitt trigger is the standard approach. There also exist purely digital dedicated chips to do the job, such as the MC14490. | |
| Jun 1, 2015 at 15:56 | answer | added | Spehro 'speff' Pefhany | timeline score: 3 | |
| Jun 1, 2015 at 15:44 | comment | added | Leon Heller | Why should debouncing be required? Relays operate relatively slow-acting devices such as motors which do not require debouncing. | |
| Jun 1, 2015 at 15:44 | comment | added | Nick Johnson | The same as any other switch: use an RC circuit and schmitt trigger, or do it in software. | |
| Jun 1, 2015 at 15:30 | history | asked | RinkyPinku | CC BY-SA 3.0 |