A doubt on TVS and RC supressor

Discussion in 'General Electronics Chat' started by André Ferrato, Jul 22, 2015.

  1. André Ferrato

    Thread Starter Member

    Apr 5, 2015
    206
    1
    Hello, i need an idea for my project. So i wanted to put a TVS diode and a RC supressing network before the transformer, the thing is the system will be working on 110vac and 220vac, and a switch will be used to change the input of the transformer from 110v to 220v. My initial idea was to simple put a TVS and RC network on the line like this.

    Sem Título-1.jpg

    A simple two position switch would be used to change the input voltage. But i don't know if this is going to work properly, because taking a first look it seems that every line is connected actually and that may or may not be true. Any help ?
     
  2. crutschow

    Expert

    Mar 14, 2008
    12,990
    3,226
    Just design the TVS and RC nework for 220Vac and put at the switch input. That should also be sufficient for 110Vac.
    Otherwise put the suppression on the output of the transformer.
     
  3. André Ferrato

    Thread Starter Member

    Apr 5, 2015
    206
    1
    A TVS rated for the 15Vac of the output of my transformer? Good ideia and thr RC behind the switch
     
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