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

snowman_al · 11th Feb 2019, 2:00 pm

Hi Malcolm,
Which valve does your HAC have? If there is nothing on the valve, tell us how many pins it has on the base.
That will tell you / us what filament supply is needed.

I am looking for my HAC stuff, lost at the moment, but as I remember:
earlier ones had 2 volt valves and used 3 or 4.5 volt cycle lamp batteries and a series resistor. Later ones had 1.5 volt valves and run off a single 1.5 volt cell.

Alan

11th Feb 2019, 2:00 pm	#3
snowman_al Octode Join Date: Dec 2018 Location: Llandeilo, West Wales, UK. Posts: 1,092	Re: HAC Regen receiver PSU Hi Malcolm, Which valve does your HAC have? If there is nothing on the valve, tell us how many pins it has on the base. That will tell you / us what filament supply is needed. I am looking for my HAC stuff, lost at the moment, but as I remember: earlier ones had 2 volt valves and used 3 or 4.5 volt cycle lamp batteries and a series resistor. Later ones had 1.5 volt valves and run off a single 1.5 volt cell. Alan __________________ Never Leave Well Enough Alone...