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

Croozer · 10th Jun 2018, 10:23 pm

Apologies. This time with photos. Unknown chassis is the first pic. Car radio the last one.

Thanks for the explanation about the double diode Pentode CBL31 - I suppose this would be an economy measure to save a valve - sort of early integrated circuit!

An inverter for getting an AC supply would seem a likely suggestion for the mystery chassis. I will trace out what remains of the circuit when I get a chance.

Meantime here are pics of some of the chassis

10th Jun 2018, 10:23 pm	#3
Croozer Pentode Join Date: Jul 2016 Location: Edinburgh, Scotland, UK. Posts: 110	Re: Mystery suitcase & unknown chassis Apologies. This time with photos. Unknown chassis is the first pic. Car radio the last one. Thanks for the explanation about the double diode Pentode CBL31 - I suppose this would be an economy measure to save a valve - sort of early integrated circuit! An inverter for getting an AC supply would seem a likely suggestion for the mystery chassis. I will trace out what remains of the circuit when I get a chance. Meantime here are pics of some of the chassis Attached Thumbnails