rectifier for sid psu

[Twin-X]

Hi i forgot to buy the  b40c800.

can i use the rectifier that is in a old c64? It's has 1047 printed on it.

thx

[doc]

Are you sure about the "1047"?

On my C64 on the rectifier is +BA20B0C- printed.

You can use this rectifier, too.

You also can use 4 Diodes 1N4002 or 1N4007.

Doc

[Twin-X]

yes i am sure ;D it also has s2vb graved in it.

Its a verry old c64 so can i use it or not?

[doc]

... hard to give you an advice without knowing the part.

;D

My advice: Just test it with a medium load about 0.5A(not core or sid !)  and check the output voltage (best: with an oszilloscope, if you have one). If it's getting very hot, its to small.

greets

Doc

[Scuzzle]

My guess would be you've got the "S2VB10" bridge rectifer, check and see if you can see that extra "10".

If you have a check of the C64 Service Manual (http://unusedino.de/ec64/technical1.html) you'll see that it's directly interchangable with the "DBA20B".

I don't have datasheets on either of these, but it's used in the C64 circuit and doc says that the DBA20B is fine, so if that's the case, the one you've got should be fine too.

YMMV,

Scuzzle

[Twin-X]

hmmm maybe i should take a pic to show it to you.

I think i will give it a try  ;D everyone thanks for the help.

[Jurbo]

I'm wondering about this too... I'm trying to find the part on Farnell but I can't. Does it matter if I get a "bigger" model, like one designed for 50-100V and 1-2A?

[arumblack]

I'm pretty sure a one rated for a higher voltage and amperage should be fine, just never use a smaller one. If you are really worried you could just use four diodes as described elsewhere.