UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

usradcoll1 · 18th Mar 2019, 5:28 pm

Now that the proper schematic is furnished, things look a bit more promising!
I looks like they're pushing the 35L6's to the maximum, 216 on the anodes and 110 on the screens, so it's good for about 6 watts. I never seen a 6BR7 valve used here!
I would be tempted to eliminate the 50C5 tube and eliminate the high wattage heater dropper resistor and use a cap dropper. Of course the heater drop has to be recalculated because of 50 volts less in the heater chain. Also, increase the size of the smoothing and storage capacitors to at least 50mfd because of the 50CY mains.

18th Mar 2019, 5:28 pm	#35
usradcoll1 Heptode Join Date: Mar 2017 Location: Cedar Grove, Wisconsin, USA. Posts: 823	Re: Ampro Stylist projector Now that the proper schematic is furnished, things look a bit more promising! I looks like they're pushing the 35L6's to the maximum, 216 on the anodes and 110 on the screens, so it's good for about 6 watts. I never seen a 6BR7 valve used here! I would be tempted to eliminate the 50C5 tube and eliminate the high wattage heater dropper resistor and use a cap dropper. Of course the heater drop has to be recalculated because of 50 volts less in the heater chain. Also, increase the size of the smoothing and storage capacitors to at least 50mfd because of the 50CY mains.