how to get 200v 100mA or 1A rectifier bridge using 1n400x?

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how to get 200v 100mA or 1A rectifier bridge using 1n400x?

Postby leftfingaz » 06 Nov 2013, 16:53

how to get 200v 100mA or 1A rectifier bridge using 1n400x? help. this is for my solid state amp without using diode bridge. here is the schematic http://www.redcircuits.com/Page158.htm
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Re: how to get 200v 100mA or 1A rectifier bridge using 1n400

Postby Dirk_Hendrik » 06 Nov 2013, 17:47

With the link I really don't get the question. What is it exactly that you want to do?
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Re: how to get 200v 100mA or 1A rectifier bridge using 1n400

Postby leftfingaz » 06 Nov 2013, 18:59

Dirk_Hendrik wrote:With the link I really don't get the question. What is it exactly that you want to do?

Image
i cant find a 200v 100ma package rectifier bridge. its look like this
Image
how can i replace it with 1n400x diode? can i use 4 1n4003?
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Re: how to get 200v 100mA or 1A rectifier bridge using 1n400

Postby galmar » 06 Nov 2013, 19:13

No, 1N4003 are rated for 140V of reverse voltage. You should go with 1N4004 at least. I would use anything between 1N4005, 1N4006, 1N4007. If there is no difference in price, I would go with 1N4007.

If you also don't mind getting them or paying a bit more cents for them, go with UF4004-UF4007. :)

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Re: how to get 200v 100mA or 1A rectifier bridge using 1n400

Postby Dirk_Hendrik » 06 Nov 2013, 21:36

Ah! Now I get it

The transformer required is a 2*25 volts. That means a 1N4001 will do. Therefore one can wonder why a 200v rectifier is in the parts list in the first place. Personally I'd opt for a 1N5400 type diode. Plenty of reserve in case of current peaks.
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Re: how to get 200v 100mA or 1A rectifier bridge using 1n400

Postby galmar » 06 Nov 2013, 22:54

Oops, I didn't notice the schematic. :)

Yes, so much reverse voltage isn't necessary. Dirk is spot on about going on the 54XX series. You can again buy a UF5402 as a better replacement if you don't mind the extra cents.

By the way, I have a 1N5400 at hand and various 1N400X ones. The 1N400X are the usual size we all know, but that 1N5400 - it is big like a mouse! :P

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Re: how to get 200v 100mA or 1A rectifier bridge using 1n400

Postby leftfingaz » 07 Nov 2013, 01:51

thank you for your help :) cheers
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