Definitive hum and buzz sticky?

[martin manning]

You can hang a resistor or a diode on the middle leg of the regulator to drop the voltage a little.

Adding resistance or a diode to the common leg will increase the output voltage. Also, I think as long as you have enough input voltage you don't have to worry about the output voltage dropping.

[Luthierwnc]

It is a full filament winding so it is overbuilt. I had Heyboer build both the PT and OT for a full 100-watts -- bigger iron than a standard Twin. Tubes up. I've built maybe 8 or 9 amps with relay switching systems but they mostly had dedicated relay transformers. Conventional wisdom here at TAG was to keep grounds completely separate.

Before TAG my first relay system was from JC Maillet's Lynx's pages (still going and still useful) on a Marshall overdrive. I used a filament winding and a regular stereo jack on the chassis. Works great. I hadn't made the leap back to the beginning with a same-trannie supply. That and a broken wire on the B+2 stage



BTW, the built-in Dumbleator works well. The return on the loop is the MV on the panel. The usual MV is a simple voltage divider on the board. The send control is on the back. In trying to chase down the noises I shielded more wires than usual but that also compensates for the long capacitance-dropping runs we often see here to take some of the highs off the arrangement.

I did end up putting the bright-off when the OD is on circuit. The extra OD relay is wired as shown in the attachment.

Enjoy your builds and summer! sh