RS337

[vega65]

I was told to clean my messy mancave..and as you know stuff add up over years…. First round resulted in a new small se amp with SFR E130. This is Something Else. Yes I do not need the power or a new amp…but I can’t resist checking this one out.
I have not managed to find an audio amplifier buildt with rs337
Maybe there is a reason ?
Anyway initial thought is to connect it as pentode with shunt Feedback from plate to grid.
Does any of you have knowledge or experience with this tube?

Scroll down a little for datasheet

https://www.cdvandt.org/RS301-337.pdf

As max anode current is not given I would appreciate if anyone could share info about it.

 

[gupsta]

Looks like a relative of SRS503.

https://plaza-rakuten-co-jp.transla...tr_sl=ja&_x_tr_tl=en&_x_tr_hl=en&_x_tr_pto=sc

 

[Fuling]

With a 500V g2 rating I wouldn't expect too much from it in triode connection but I bet it could make a killer single ended pentode amp with the right output transformer and some form of local feedback.

 

[gupsta]

My German isn't very good, but there look to be max Ia values for class B & C on the second page of the datasheet

 

[vega65]

Yes, and one can assume from the given max Va and max dissipation a Max Ia,
But that max Ia might be higher at lower Va…
Triode connection is not an option
Why throw away the benefits of the accelerating grid?

 

[Fuling]

This document lists it as an equivalent to 813:
https://frank.pocnet.net/other/BEL/hafo/BEL_tx.pdf

 

[Fuling]

Triode connection is not an option
Why throw away the benefits of the accelerating grid?

I didn't read your first post properly, I see now that pentode connection and local feedback was already mentioned.

 

[vega65]

As a start for testing maybe 650V a-k, variable Vg2, 140ma anode current and 3kOhm:8 output transformer. Drivertube E282f pentodeconnected or c3m, unbypassed cathode resistor and regulated g2 supply