12-11-2020, 10:41 AM
Ed sez: I'm now finishing up the O/P transformer. Primary is done (#35 wire, 20 layers of 140 turns each with center tap). The secondary will be next. That is 18 AWG - incredibly beefy considering the voice coil of the speaker!
This = a primary of 5.2k load for the p/p 42's in a triode reconfiguration (Ed's 16X). Your 45's require a bit of a lower load abt 3.2k so a little less wire/turns. [Image: https://philcoradio.com/phorum/images/sm..._smile.gif]
This = a primary of 5.2k load for the p/p 42's in a triode reconfiguration (Ed's 16X). Your 45's require a bit of a lower load abt 3.2k so a little less wire/turns. [Image: https://philcoradio.com/phorum/images/sm..._smile.gif]
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!
Terry
