240v AC to 90(110)v DC Converter

[LazyRover]

Googling around, I can find plenty 240v AC to 12v DC converters and 240v AC to 110v AC

but not 240v AC to 90 or 110v DC converter.

Does anyone know where I might find one?.

Thanks.

 

[dazzer]

Blimey!!!

What on earth do you need 100v DC for???

Ive never heard of such a thing or indeed anything needing that amount of power in DC form

 

[LazyRover]

A friend has some very old value radios which he is trying to get working. Apparently they run at 90v DC.

 

[pappajohn]

eight 12v batteries end to end.

90v sounds an awful lot of dc volts to run a valve radio to me.

 

[hilldweller]

A friend has some very old value radios which he is trying to get working. Apparently they run at 90v DC.

WOW - blast from the past. When I was a kid I had a portable radio with 90V and 1.5V batteries. 90V for the electronics and 1.5V for the heaters.

Cost a fortune to run it.

Google: tube radio battery substitute
and he'll find the answer.

One here: http://www.antiqueradio.org/bsupply.htm

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[pappajohn]

WOW - blast from the past. When I was a kid I had a portable radio with 90V and 1.5V batteries. 90V for the electronics and 1.5V for the heaters.

Cost a fortune to run it.

Google: tube radio battery substitute
and he'll find the answer.

One here: http://www.antiqueradio.org/bsupply.htm

substituting the 110v ac components for those suitable for 230v ac of course (presumably ?)

 

[Wildman]

why not use a 240/110V Ac transformer then add a bridge rectifier and some smoothing caps you should get someplace close. might need to add another transformer to bring it down a bit or wind one to suit.

 

[4b2]

One of these might do the trick:

http://www.screwfix.com/prods/61847...5kVA?cm_re=SEARCHPROMO-_-TRANSFORMERS-_-61847

 

[LazyRover]

Thanks everyone.

I'll pass on the advice.:thumb:

 

[hilldweller]

substituting the 110v ac components for those suitable for 230v ac of course (presumably ?)

A tiny 230V transformer would be needed. Maybe as low as 60V secondary.

It does need a bit of experimentation because a battery set would not have provision for any hum on the DC supply. Sure ain't rocket science.

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[pappajohn]

A tiny 230V transformer would be needed. Maybe as low as 60V secondary.

It does need a bit of experimentation because a battery set would not have provision for any hum on the DC supply. Sure ain't rocket science.

Tis to me Brian......i buy electronics ready made in a suitable box.