i dont know if this expression is right but my teacher want something with seperate transformators for simple thristors.and he want to trigger them at the phase/angle he want but i didnt understand anything.
does something like this exist cause it must be something like very known thing?
thnx
Joined: 05 Oct 2004 Posts: 6490 Helped: 1542 Location: West Coast
11 Mar 2006 3:11
Re: thristor firing
Have a look at these briefs on SCRs:
http://www.kilowattclassroom.com/Archive/SCRArticle.pdf
http://www.allaboutcircuits.com/vol_3/chpt_7/5.html
In them you will find explenations on how SCRs work and are triggered, or "fired", about firing angles and pulse transformers (if that was what you had in mind) ..
Regards,
IanP
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can we make it with thristors only and without using pulse transformator but normal like 5v transformators.
and how can we control the angle with that one?
Joined: 05 Oct 2004 Posts: 6490 Helped: 1542 Location: West Coast
12 Mar 2006 5:04
Re: thristor firing
Pulse transformers are specially designed to have very short pulse rising times (usually between 0.05-0.5µs) whereas normal transformers are designed for power conversion (low frequency) and because of poor pulse response are useless as SCRs or Triacs firing devices ..
If you wish to learn more on pulse transformers take a look at:
http://www.schurterinc.com/pdf/usa/typ_isna_itrf.pdf
