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RE: I feel like I should know this.

Posted by xaudiomanx (A) on August 15, 2013 at 17:58:50

In Reply to: I feel like I should know this. posted by Corndog71 on August 15, 2013 at 06:21:11:

You could use a SS rectifier without a delay circuit if you have caps that can handle the voltage increase or you can use a delay circuit or an inrush limiter but as the voltage comes up it will be higher with SS rectification than with tube by about 40-50 VDC so you still have to make sure the caps can handle the extra voltage.

I happen to like SS rectification in some amp circuits. Most PP amps like the Dynaco stuff is to my liking. I feel tube rectification was used to keep the voltage down but it having a cap right on the rectifier really defeated the purpose.

I also felt the amp sounded better with a 40UF cap on the rectifier then a 100R resistor right off the rectifier with a 40UF cap putting the output tranny B+ right there then the choke with a 40UF cap then leave the rest of the power supply circuit as it was. The amp sounded more lively with an extra stage of decoupling with the output tranny B+ wires before the choke. But that's only my opinion. I got the idea from a good friend and I figured it can't hurt to try it. The circuit then becomes C/R/C/L/C/R/C/R/C power supply. With a SS rectifier you could probably eliminate the choke and cap totally by adding more capacitance on the rectifier(80UF or a little more).

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