Personally I value the function of mosfets far more than I value the functions of many people.

Grammar Nazis being one of them.

I used to be uneducated with grammar. I did some University and wrote some papers, and did learn a lot. I wrote one paper on capital punishment for murderers, rapists and paedophiles. I scored %65 (that's a credit grade in Australia)

 

True. To get near 6.3VDC from 6.3VAC in a capacitor filter design you will need 3 diodes in series (2 besides the rectifier diodes).
For a given load you can further tweak it by adding a small resistor value in series with the load.

Hi crutschow,

I was thinking along the same lines, adding another diode in series.
I also read that it is possible to use a zener diode as a limiter, but this solution does not meet with everyone's approval.

Still, thanks for the advice, all is appreciated.

 

If you have a, "given" load, I prefer a series resistor. Some filaments seem to "flare" when first powered because the filament has low resistance when cold. "Too much" voltage compensated with some resistance mitigates this to some degree. My favorite kind of vacuum tube is one that survives for a very long time.

 

If you have a, "given" load, I prefer a series resistor. Some filaments seem to "flare" when first powered because the filament has low resistance when cold. "Too much" voltage compensated with some resistance mitigates this to some degree. .....................

A resistor is fine as long as the burnout of one filament doesn't increase the voltage on the other filaments, due to the reduced current, to where they also burn out.

 

Hi crutschow,

I was thinking along the same lines, adding another diode in series.
I also read that it is possible to use a zener diode as a limiter, but this solution does not meet with everyone's approval.

A single zener of the appropriate voltage and power rating on each leg would also work fine.
Don't understand any objections to that.