PSU question? Going tube rectified

[sbelyo]

And why is that?

Good question....

I changed the Values of C1 from 100uf to 40uf R1 from 110 to 1.25K and C2 from 200uf to 80uf

 

[poobah]

What your output voltage? 1.25K for R sounds waaay too big

 

[sbelyo]

The original tranny was 190-0-190
Here's the PSUD File: http://www.bytesunlimited.us/SS.psu
Using the 5U4GB dropped the voltage too low

So I found a 235-0-235 tranny with 6.3 and 5 V taps
Here's the crc version http://www.bytesunlimited.us/Tubecrc.psu
The voltage is way to high with the original values except for C1 changed to 40uf

I made a rcrc filter here http://www.bytesunlimited.us/Tubercrc.psu

The voltage now seems more in spec. Is this good?

 

[sbelyo]

Are there any problems or drawback to adding another RC stage to a CRC filter?

 

[poobah]

Cost...

 

[sbelyo]

Cost...

Ahhhh... I passed that threshold many moons ago. While I usually don't go for blackgates, I don't mind spending a few bucks on an extra cap and resistor

 

[poobah]

When you think you have a design... send me the list of parts. I will rerun it PSD II to confirm your results...

😉

 

[sbelyo]

Thanks... I think I'm gonna dump the original transformer and go for one with a little less voltage.