Discussion in "Welcome Forum" started by    maann    Oct 8, 2013.
Tue Oct 08 2013, 02:14 pm
#1
hi..

do you have any idea and circuit on how to make a light dimmer using only scr?

thankyou!
Tue Oct 08 2013, 03:44 pm
#2
why not using TRIAC? SCR can only work for one cycle of AC. We have a triac based control circuit with trimmer. Check it out:
http://www.8051projects.net/download-d139-ac-motor-speed-control-using-triac.html
Wed Oct 09 2013, 05:50 am
#3
hi ajay..

we are only required to use SCR as main components, we should use potentiometer for the adjustments for the dimmer and as an output we just going to use a bulb and 220v ac source.. just a simple circuit will do. i have also searched in google but there are no specific code for each components..

Wed Oct 09 2013, 05:53 pm
#4
usage of SCR and TRIAC is almost similar, You can take reference from download I posted earlier. Did you take a look at it?
Wed Oct 09 2013, 06:24 pm
#5
hi ajay,

yhup i saw it... but i find it complicated...
a simple circuit for the dimmer would do..


thankyou much
Thu Oct 10 2013, 12:37 pm
#6
A better circuit:
SCR Phase control dimmer:
http://www.electroschematics.com/8411/scr-phase-control-dimmer/

Simpler one..:

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