Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Dimmer problem please help~

Status
Not open for further replies.
T

takbbb

Junior Member level 2
Joined
Sep 3, 2008
Messages
21
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,428
I make a 12Vac dimmer useing hotlek mcu to drive the triac

the circuits are in the attached. . . .
i get problem when i get fire to the triac then the 12Vac was distorted.
And it casse me cannot detect the zero crossing ...

anyone can help thx!!

normal 12V ac when triac was not fired
DSC03271.jpg


distorted 12Vac when triac was fired
DSC03270.jpg
[/img]
 

Whats your load?

Perhaps plot your zero crossing detector toggle on channel 2 vs ac on channel 1.

oddbudman
 

where is the circuit ?

upload it again.

tips :- use fan dimmer before transformer , it is simple too
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top