Tube Amplifier Power Supply Schematic

It has no sense to have the best tap if you have only few and spotted water to put through.

Tube amplifier power supply schematic. The power supply in the 6146b transmitter is a design commonly called an economy supply. Ac wall power from the power cord flows through the on off ac switch and on to the power transformer shown at bottom center which steps up the wall voltage to 325 volts rms root mean square average ac for the high voltage supply and steps it down to 6 3 volts for the preamp and. A preamp or an amp is like a tap put after a water tank. In the above circuit 16v loss is caused by the forward resistance of the 2 large valve rectifiers.

The final output voltage is 1 below target final ripple is 2 9µv or 110 7dbv. 16v valve rectifier loss is small compared to b 560v. Figure 10 power supply schematic. A choke input power supply is approx 90 efficient therefore the b will remain relatively stable when a class ab amp is driven at high power.

That s it for the signal path now let s examine the amp s power supply shown at the bottom of the schematic. All four diodes are used to form a full wave bridge rectifier for the plate supply but for the screen supply only diodes d1 and d2 are used. The ps 11 includes both the rectifiers and power supply reservoir capacitors. This design makes use of the power transformer and rectifiers in a very clever manner.

The ps 11 circuit board makes life quite a bit easier for the tube fancier. On this small three by six inch extra thick 0 094 2oz copper traces usa made pcb resides a high voltage power supply suitable for powering a tube power amplifier.