90V Battery?

[beemer]

My local garage owner has been given an antique battery radio.

he rang me today and asked me if I was aware of such a thing as a 90v battery!

he says (as I have not seen it yet) that there is a 90v and a 1.5v battery in this radio.

He tells me that the 90v battery has expanded and is no use anymore.

I have never heard of such a thing but wondered if anyone on here has.

I intend to visit the garage and see for myself and hopefully take a picture.

 

[Doc Hudson]

9v maybe, written as 9.0v as in 1.5v?

Doc H.

 

[Marvo]

If it's a battery operated valve radio then it's feasible that one of the batteries could be 90 volts although they were more often in the 40-60volt region.

There's a couple of options, you could build a homebrew 90VDC power supply or you can link up 10 x 9 volt batteries in series. This isn't as difficult as it sounds because the +ve terminal of one battery will plug directly into the -ve terminal of the next one. 

*Edit* Be warned if you plug the batteries into a valve device and the polarity is incorrect then you won't get a second chance, the damage to the valve(s) will be catastrophic. Please take care.

 

[ProDave]

90V batteries were indeed common for the "HT battery" This is obviously a valve set, made with miniature wire ended valves.

If it works, or can be made to work, it's worth something to a collector.

What sort of physical space do you have? the obvious thing to try it, is 10 PP3's in series

Here's some options:

http://www.kitradio.co.uk/page15.htm

http://www.portabletubes.co.uk/sitefiles/ptbattelim.htm

http://www.vcomp.co.uk/batt_elim/batt_elim.htm

 

[steptoe]

could you get a capacitor to work?

 

[OnOff]

Get the soldering iron out!

http://www.vintage-radio.com/projects/battery-set-psu.html

 

[SLIPSHOD & SLAPDASH]

Only the other day my mother was reminiscing of one of her weekly  childhood choirs, which was to get her fathers accumulators for his Cristal set recharged at the chemist. Half the people reading this wont have a clue what i am on about.

 

[SLIPSHOD & SLAPDASH]

http://www.vintageradio.info/cell.html

 

[beemer]

Many thanks to all who answered.

I can now print off all the info and pass it on to the garage owner, you never know I might get a discount the next time I put my car in!!!!!!

Cheers