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

adibrook · 23rd Oct 2006, 8:08 pm

That sounds like a good idea.

I was thinking of running it on 9V. The current consumption of a typical DL radios heaters is pretty small, and i think even the small TO-92 version of the LM317 wouldnt struggle. A pp9 battery should power it for a reasonable time too.

The alarm thing originally run on 4.5V from 3 1.5v button cells, from which it developed up to 70v.

Is it possible to rig up some kind of simple transistor oscilaltor that would use the primery of the auto transformer as its tuned circuit? That would keep everythgin simple and not use alot of pats.

23rd Oct 2006, 8:08 pm	#4
adibrook Retired Dormant Member Join Date: Dec 2004 Location: Weymouth, Dorset, UK. Posts: 377	Re: compact HT generator idea That sounds like a good idea. I was thinking of running it on 9V. The current consumption of a typical DL radios heaters is pretty small, and i think even the small TO-92 version of the LM317 wouldnt struggle. A pp9 battery should power it for a reasonable time too. The alarm thing originally run on 4.5V from 3 1.5v button cells, from which it developed up to 70v. Is it possible to rig up some kind of simple transistor oscilaltor that would use the primery of the auto transformer as its tuned circuit? That would keep everythgin simple and not use alot of pats.