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Old 10th May 2021, 8:13 pm   #6
els1967
Pentode
 
Join Date: Aug 2016
Location: Dunstable, Bedfordshire, UK.
Posts: 110
Default Re: Mains transformer wanted

50Hz Mains through a tranny is ok if you're not a purist. trying to replicate 16hz starts to get quite complicated. I tried using a couple of relays and a 555 with a d-type flip flop reversing DC between the two relays to the bells. but it didn't really work that well, ok I guess. Works enough for a doorbell. Probably there are better ways to do it.
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