13P1S PP Amplifier

[spswmsw]

PP amplifier.
Phase-splitter concertina 12SR7, second stage using Russian 12J1L (12Ж1Л) x 2, output stage using Russian 13P1S (13П1С) x 2.
PSU Russian 5Tz4S (5Ц4С) x 2, bias rectifier Russian 6H6S (6Х6С), gas regulators Russian SG-2S (СГ-2С) used to supply the screens of 12J1L.

 

[Shef]

Man, I've been looking for the towel handler exactly like this ))

 

[demonzotov]

what TVZ turned out, output parameters?

 

[spswmsw]

13P1S in triode, bias -60V, Ua 200V, Ia 50 mA each tube
2 x 6W output
TVZ 12 cm2, Raa 8k

 

[demonzotov]

on what iron?

 

[50AE]

I love the construction style. Quite sturdy. 😀

 

[spswmsw]

on what iron?

From KINAP ТУ-50 (incomplete set - 30 x 40 mm)

I love the construction style. Quite sturdy. 😀

Thanks!

Full schematic I'll show very soon.

 

[Wavebourn]

Great amp, made with love!

Also, interesting tubes were used. 12J1L were initially designed by Telefunken, for German army, then redesigned for Red Army, in loctal form, like 4P1L.
13P1S (13П1С) are copies if 12L6GT tubes. Very linear in triode mode. Also, they resemble as if "TV sweep" version of 6V6, with denser screen grids and higher currents.

 

[spswmsw]

Complete schematic with PSU

 

[Pyka]

Small power amplifier for large production！Very much like！
Is the amplifier class A PP？

 

[spswmsw]

Small power amplifier for large production！Very much like！
Is the amplifier class A PP？

It's class AB topology.