You wrote...

>My apologies to all - I forgot the picture (my webmail works in an odd
>fashion). I did not expect anyone to chase links by any means, so my apologies
>again. Here it is.

I don't see any reservoir capacitor in your circuit.  Are you
relying entirely on the 220uF capacitor shown in the Maxim
diagram?  If so, I doubt that's enough to hold up the input
voltage to your regulator adequately under load.

Whether you are or not, that wouldn't explain why the rectifier
output voltage is going **UP** when you connect the regulator;
that just doesn't make any sense.

You ARE measuring this voltage with respect to circuit ground,
right?  And circuit ground (i.e., the transformer center tap) IS
connected to regulator circuit ground, right?

I really can't make sense of this.  Are you sure your voltmeter
is working properly?

DD

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