UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Hope to start an audio amp with CV415/CV4046/TT15

AdrianH · 14th Jul 2020, 1:20 pm

This is a do not try this at home really, but I managed to add a variable load to the psu using a small Halogen lamp to dissipate some of the load and therefore heat. S200AF driven by a 2N3439 a Zener and a few resistors.
This give me a clue as to the output Voltage I can expect under what every load I use, looks like the full 300 Volts i require is out of my reach at 50mA+ draw but for a fun build it will do me for a single amp.

Time to crack on with another chassis.

Adrian

14th Jul 2020, 1:20 pm	#25
AdrianH Octode Join Date: Mar 2020 Location: Blackburn with Darwen, Lancashire, UK. Posts: 1,572	Re: Hope to start an audio amp with CV415/CV4046/TT15 This is a do not try this at home really, but I managed to add a variable load to the psu using a small Halogen lamp to dissipate some of the load and therefore heat. S200AF driven by a 2N3439 a Zener and a few resistors. This give me a clue as to the output Voltage I can expect under what every load I use, looks like the full 300 Volts i require is out of my reach at 50mA+ draw but for a fun build it will do me for a single amp. Time to crack on with another chassis. Adrian Attached Thumbnails __________________ Asking questions and learning, or trying to! Youtube EF91Valve