Posted by 2wo [ 71.242.19.104 ] on November 09, 2006 at 23:08:08:

In Reply to: How about this posted by Shane on November 09, 2006 at 10:12:05:

What I had on hand. Those words loom large in my legend.

The supply you propose will work well.

As to the cap across the secondary. If it is a very small value, .1uf or so it is there to shunt power line hash. Not a bad idea at all. A larger value is a "cheater cap" used to tune the output voltage.

A pure choke input filter will give you about 66% of your transformer secondary voltage. A cap input about 140%. As you increase the size of the cap you move from one mode to the other…John

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