SCR high side or low side

[Peter]

Does an SCR go on the high side or low side of the load, or doesn't it matter?

 

[CFoley1064]

Subject: SCR high side or low side
From: pmolsen@one.net.au (Peter)
Date: 7/25/2004 4:01 PM Central Daylight Time
Message-id: <6ba442b.0407251301.3c110c7f@posting.google.com

Does an SCR go on the high side or low side of the load, or doesn't it
matter?

It can be done either way, but it's usually easier to put the SCR on the low
side like this (view in fixed font or M$ Notepad):

Typical SCR Control Circuit
+o------------o----------.
| |
| .----o-----.
| | |
| | |
| | LOAD |
| | |
| | |
| '----o-----'
| |
.----o-----. V
| + | -
| CTL CKT o---/|
| - | |
'----o-----' |
| |
-o------------o----------'

created by Andy´s ASCII-Circuit v1.24.140803 Beta www.tech-chat.de

Good luck
Chris