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Need help with improving my zero crossing detector

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conchunchun

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Suggestion

I have managed to design a circuit with zero crossing detector+pulse transformer by using SCR to control the speed of my separately excited dc motor. It is single phase and half wave control. I wish to ask is there any modification i can do on my circuit? For example adding commutation and braking system.

Please advise. If possible give me some basic circuit. Thanks.
 

Re: Suggestion

The motor generate an delay on phase..... you should use a power factor corrector
 

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