40-88 battery - Printable Version
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40-88 battery - Philcofan - 07-02-2012
Can anyone please tell me what type of battery eliminator
I can use for this. I can not tell from the schematic I have what the voltages I have. I think it is a 90v, 1 1/2 v but am unsure.
thanks
Chris
RE: 40-88 battery - jerryhawthorne - 07-06-2012
Chris, if indeed it is a 90/1.5 V battery is is quite easy and inexpensive to build an A/C power supply and incase it in a box. Cover with graphics and it looks stock, other than an A/C cord coming out with an in-line switch on it.
I have done 2 of these and they were fun to build. Maybe $30 for all parts, most for the aluminium box and the the board. The other option is to buy a bunch of nine volt batteries and hook together for a total of 90V and a couple C cells for the 1.5. I always thought that was messy and I don't like replacing batteries. Attached is a pix of what I made for a couple of farm radios.
Jerry
[Image: http://i303.photobucket.com/albums/nn129/JerryHawthorne/FarmRadio2.jpg]
RE: 40-88 battery - Radioroslyn - 07-06-2012
Nice job Jerry!!!
Terry
RE: 40-88 battery - jerryhawthorne - 07-08-2012
Thanks Terry, why someone wants to hook up all those batteries, well, one set plus something to mount them in, and if your going to use it, it gets a little pricey. The A/C power supply works very nicely and the radio shown, plays very nicely, with no hum at all. Wish I would have saved the graphics, it came from some U.K. website. Seems it has been closed down.
I'm certain someone saved this stuff. All parts I purchased from Mouser. The aluminum box was within fractions of an inch of the original battery. Had to do a little work on the computer to size properly. Making the female connector was easy. A piece of brass tubing and a small piece of thin plywood. An enjoyable project that worked well.
Jerry
RE: 40-88 battery - Radioroslyn - 07-08-2012
Let me dig around a bit I should have the grafics on CD. I downloaded them a while back.
Terry
RE: 40-88 battery - Ron Ramirez - 07-08-2012
Philcofan - yes, the original voltage of the battery was 1-1/2 volts for the "A" (filament) supply and 90 volts for the "B" side.
Jerry - I agree with Terry, nice work!
