Posted by 2wo [ 70.110.234.218 ] on November 27, 2005 at 15:56:50:
In Reply to: Re: Some questions on Power supplies posted by Damir on November 27, 2005 at 15:01:56:
Hi Guy, if you know what the AC output of transformers that you have, you can go right to Psu2 and cut and try.
Measure the DC resistance per Damir. Or just using the dc resistance of the secondary will be close enough to tell if the transformer could work.
As a rule a choke input filter will give you about .7 of the rated voltage cap input about 1.4
Remember if you have say a 250-0-250 transformer, in Psu2 with a full wave rectifier (normal hook up for a 5y3) you state the transformer as 250V.
If you can’t get a high enough voltage, switch to a full wave bridge (SS or tube) and try again. Only in this configuration, you state the above transformer as 500V
Have fun…John
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