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Originally posted by ow.di.0.file:

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Originally posted by oldtimer:
You say two rectifiers I would use four in a full wave rectifer mode. You are running half wave.

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huh? can you elaborate, or post a link. I'm not having much luck searching google.

-Dan

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Posts: 1147 | From: Rowlett, TX, USA | Registered: Jun 2000  |  IP: Logged | 

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Originally posted by oldtimer:
I recommend using One Large Full-Wave rectifier( one device-four electrical connections). They can usually be had at fry's and radio shack or online. I would buy a 25 amp or so they are cheap, it will need to be about 50 volts or so.

Wire the primary(high side) of the transformer to the ac supply, wire each of the transformer's two secondary leads(low side) to the AC input of the full-wave rectifier ac inputs. There are two AC inputs(marked ~) so wire one to one AC terminal and One to the other. The DC comes out the + and - Terminals for the postive and negative connections for DC output. Then add the capacitor Plus (+) side to the Plus (+) of the rectifier and the negative(-)side of the Capacitor to the Negative (-) terminal of the rectifier. The regulators if needed can be added after the capactor.

Remember this voltages can be fatal so don't attempt if not sure what you are doing. Remember to fuse the input and output.

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Wow That is almost exactly how my power supply is assembled. The only difference is I have two rectifiers, wired in parallel. They do have 4 pins each on one side, and an exposed metal surface on the other that is in contact with the heat sink. I recall they were rated for 50v 20A each.

I finally have access to a digital camera, and will post pics of my ghetto supply soon.

All of this stuff is tucked away in a cardboard box in the corner of my room. I've installed a 10A fuse, but the supply would have to draw over a 1000 watts to blow that. I have a feeling something else would catch on fire first.... any ideas on what I should build to house all this stuff? I'll replace the 10A fuse with a 3A fuse in a couple of days.

-Dan

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Posts: 362 | From: Auburn, WA, USA | Registered: May 2001  |  IP: Logged |