My porn vssa amp 😀
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BRRRRRRRRRAVO! 
Its tiny! Almost half of that SSA peeceebee!
Sings good? nice! Enjoy!
Do you plan to replace those trimmers with fixed resistors?

Its tiny! Almost half of that SSA peeceebee!
Sings good? nice! Enjoy!
Do you plan to replace those trimmers with fixed resistors?
Last edited:
BRRRRRRRRRAVO!
Its tiny! Almost half of that SSA peeceebee!
Sings good? nice! Enjoy!
Do you plan to replace those trimmers with fixed resistors?
Yes this is tiny beast!
Sing very good like his little brother :up :up
Of course I will replace trimmer using fix resistor.
Using this trimmer make me easy to set.
Nice progress.. Btw what is pcb in the first pic? Is that power supply?Bravo naf. Exellent job.
My peeceebee is drilled, tinned, painted and ready for soldering.
Yes, it's power supply.
No, it's not regulated. It's cap multiplier.
Shaan wrote 35V is max, I had 38V after rectifier, so I used cap multiplier to lower voltage to 34V. As I had trafo with three wires on secondary (27,5 - 0 - 27,5 VAC), I tried with N-type MOSFET at + rail and P-type at - rail, but I got 0,5V difference between rails. Then I had to open trafo, divide common zero wires, so I got separated windings and I could use only N-type (IRF530, that's what I had). Now I have equal output voltages for both rails.
When I finished power supply, I saw naf used 40V rails and realised I didn't have to bother to lower supply, but anyway cap multiplier is useful.
In a few hours I'll finish soldering and post pics.
No, it's not regulated. It's cap multiplier.
Shaan wrote 35V is max, I had 38V after rectifier, so I used cap multiplier to lower voltage to 34V. As I had trafo with three wires on secondary (27,5 - 0 - 27,5 VAC), I tried with N-type MOSFET at + rail and P-type at - rail, but I got 0,5V difference between rails. Then I had to open trafo, divide common zero wires, so I got separated windings and I could use only N-type (IRF530, that's what I had). Now I have equal output voltages for both rails.
When I finished power supply, I saw naf used 40V rails and realised I didn't have to bother to lower supply, but anyway cap multiplier is useful.
In a few hours I'll finish soldering and post pics.
Shaan, are there VSSA with 2 pair Fet?. Thanks
Most probably there will be one. 😉
Lateral Mosfets
Check Tayda electronics. They sell Renesas lat fets.
Regards
Ted
Guys!
Where did you buy the latheral fets???
Do you have any trusted source??
Check Tayda electronics. They sell Renesas lat fets.
Regards
Ted
Most probably there will be one. 😉
Why should just one, Shaan? please share .. so that we can taste them.😀
Is there a big difference between the original 2sa1381/sc3503 and the BD139/140??
Yes. Availability. BD devices are spread like grass over the world(or like a plague, to some who hate them). 😀
Why should just one, Shaan? please share .. so that we can taste them.😀
What I meant is that there will be a VSSA PeeCeeBee with two pairs of FETs. 🙂
Of course I'll share it, gonna miss the fun if I don't.
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