Does the Filld Coil in this National amp act as a choke ?

[g1]

I think I've seen field coils wired from B+ to ground, in which case it does not act as a choke, but may be acting as 'ballast' to load down the supply.
In your Supro example, I think this is the whole schematic, with the field coil shown as '1000ohm 25W'. If so, yes it is acting as a choke, not sure why it would not be deemed as so, unless there was confusion about whether it was a choke or a resistor.

[Helmholtz]

I asked that question about another one of my old amps a while back (Supro Supreme circa 1949) and the answer was no for the below Supro amp :

[ATTACH=CONFIG]56111[/ATTACH]



But for the amp below (A Valco cousin made by National), I believe the Field coil in the below National 1212 amp also serves as a power choke., is this correct ?

[ATTACH=CONFIG]56112[/ATTACH]

In the National 1212 amp the field coil definitely serves as a PS filter choke.

In the Supro schematic I don't see a field coil, but if there is one it is most probably also wired as filter choke.

[HaroldBrooks]

I asked that question about another one of my old amps a while back (Supro Supreme circa 1949) and the answer was no for the below Supro amp :





But for the amp below (A Valco cousin made by National), I believe the Field coil in the below National 1212 amp also serves as a power choke., is this correct ?