(05-29-2023, 10:40 AM)K O'Connor Wrote: Hi Gary
How about a circuit description here for those who do not use youtube?
Have fun
this circuit null the A/C ripple voltage, but also acts as a passive voltage regulator. Bear in mind, this is all done with injecting an error correction signal, into the back end of the DC rectifier. Since there are no active devices, no transistors, no "IC linear regulators", this approach does not generate any of the waste heat, compared to it's active counter parts.....
Now begs the question , would I use this filter inside my own amplifier builds ? All good questions , given Surface Amplifier already has A/C ripple rejection, as a side effect of using a vacuum tube for it's input Dynamic Load SRPP gain stage. An effect few class A amplifiers can achieve, due to the air gap inside a vacuum tube , mostly......
i was thinking , for example , a more painless way to generate a clean 5 volts for filament power for a 300B.
-g


