SSLV1.1 builds & fairy tales

[Salas]

Seem ok those two

 

[merlin el mago]

Replaced Q104, time to test?

 

[Salas]

Yes, so we see if ok or to look furter

 

[merlin el mago]

ok

 

[merlin el mago]

Still can't fix Vout & still don't lit the two Vref red LEDs

 

[Salas]

Can a led had been burned? Can they light with DMM's diode test?

 

[merlin el mago]

On red LED is gone

 

[merlin el mago]

Vout max. 4.921 CCS 0.841V:0.6R = 1.4A

All LEDs lit.

 

[Salas]

Success!!! But where all this current goes?

 

[Salas]

Needing little R103 value help or too much current goes to the heaters? Does Q106 get any hot?

 

[merlin el mago]

Success!!! But where all this current goes?

No success, can't reach 6.3Vout

 

[merlin el mago]

Changed trimmer 1K for now 2K but Vout max. only 5.05V

 

[merlin el mago]

Should I increase the trimmer to 5K?

 

[Salas]

No change q103 first

 

[merlin el mago]

Success!!!

Can regulate Vout to 6.3V!!!!

CCS set 1.373A

Measured the real heater power consumption is 818mA.

 

[merlin el mago]

The other measured real heater power consumption is 840mA.

 

[merlin el mago]

Many thanks Salas for all your support and time.

 

[Salas]

Congrats for fix. Now I saw your final posts, I was at a friend's listening to vinyl with his valve itch phono.

 

[merlin el mago]

Thanks Salas. Now enjoying listening the Itch, a very huge increase of SQ. Finally both regs with the same CCS 0.68R. Next week arrives the 4.7uF Auricaps but now Vref caps are the BG 220uF.

I don't know how can do this big amount of information & dynamics it's unbeliable. Only are for indirecta heated valves.

 

[Salas]

Valve Itch Phono is for V.I.P. tube listeners 😀