Wonder how hard it would be to convert this 32vdc Philco to AC?
TwoMuttHeads
300vdc B+ but puts the 6v tube filaments in series. Riders Vol5.
http://denver.craigslist.org/atq/1496305061.html
Ken
transformer power supply with a 6V/5V winding for the tubes. I have
transformers. This will be invasive surgery, but a nice winter project. Ken
pgon...@msn.com
socket may be able to be turned into a rectifier tube socket. The
vibrator transformer, when removed, opens up a spot for an AC
transformer. You'll have to re-wire the filament to parallel, not
series. All the tubes are typical AC powered chassis tubes (no
filamentary cathodes to deal with), Should be a straightforward
conversion. Best of luck,
Dave
TwoMuttHeads
I have a lead on a Philco 37-670x console for $80....11 tubes, shadow
tuning...so many radios, so little space.
Pete Bertini
"TwoMuttHeads" <menw...@msn.com> wrote in message news:5623f481-b437-4997-
I have a lead on a Philco 37-670x console for $80....11 tubes, shadow
tuning...so many radios, so little space.
Nice radio if you have room. I have a soft spot for the big Philcos.
Pete
RadioHist
In my opinion those 32 Volt Philcos are pretty scarce. My advise is
to sell it to someone that will preserve it as is. Take the cash and
buy a common tombstone to 'hybridize' with new parts to make it work
for a few years.
Robert
paul @removeppinyot.removecom Paul_P
<pgon...@msn.com> wrote in message
news:5bc9e2fd-117d-4b27...@p32g2000vbi.googlegroups.com...
Radiodaze and others sell replacement solid state vibrators.
Paul P.
paul @removeppinyot.removecom Paul_P
"Pete Bertini" <radioco...@cox.net> wrote in message
news:P_%Sm.46185$tz6....@newsfe02.iad...
I have about 4 or more in the garage waiting for some shop dead time. I
just can't seem to pass them up. It is like a disease or and
addiction........
Paul P.
Ron w4ron
Ron, w4ron
buzz
So if you convert it, destroying its originality and effecting it's
value, how often do you intend to play it? On a daily basis (which might
make the conversion acceptable)? Once a week? Once a month? Every six
months? Why not just leave it original, you probably have other sets
that already work on 110VAC. If you want to demonstrate the set, build a
32 volt power supply, that shouldn't be any more difficult than doing a
32 to 110VAC conversion.
philo
> PRESERVATION, not Bastardization ! ! !
>
>
> Ron, w4ron
>
I agree!!!!!
A 32v radio would be a *great* collector's item for sure!
John Goller, k9uwa /W4 Snowbird
says...
>
>
>I agree!!!!!
>
>A 32v radio would be a *great* collector's item for sure!
I am sure you have seen at garage sales many of those little 3 amp
13.8 volt regulated supplies they used to sell to power CB radios with.
Well stack up two of those insulated between the chassis of each and
they work fine. This gives you around 28 volts and is enough to make
that 32 volt radio happy. They buzz a bit so add some serious capacitors
to the supply.
John k9uwa
terry
> PRESERVATION, not Bastardization ! ! !
>
> Ron, w4ron
OPINION:
Shouldn't be too hard to build a 32 volt DC power supply (maybe using
a computer switching supply?). Replace the vibrator with a solid state
look alike or actual replacement.
Seems a shame to chop up a good 'original' radio? If worth preserving
at all why not as close to original as possible?
Rather like getting a vintage car (say a Mustang) and then
bastardizing it with a Chevy engine and power train; thus turning into
yet another 'chopped up' old unit!
HankVC
I think if I came across an old 32-volt farm radio, the last thing I'd
consider would be trying to convert it to run conventional AC power
unless the power transformer was bad. Farm sets are fairly rare, and
there's another hobby that refurbishes old Delco and similar light
plants for display and demonstration of "how things were before REA"
electrification.
Instead, I'd consider doing something to come up with a 32-volt DC
power supply to run it. So far as dealing with the vibrator goes, if
it's working, don't fix it, but do replace the buffer capacitor on the
B+ winding. I'll assume the vibrator is a self-rectifying synchronous
type.
Conjuring up a suitable solid-state vibrator replacement circuit
should not be too hard to do, if one is needed, and if the people who
sell solid state replacements for vibrators aren't making one for a
farm radio. Normal chopper frequency for a mechanical vibrator is
around 120 Hz., so you can't drive the power transformer with 60 Hz.
AC. The self-rectifying function can be duplicated with a pair of
1N4007 diodes.
I'll note here that 32 and 64 volts are standard DC voltages in
railroad locomotive use. Don't know what's available from that world
today to help with duplicating the original power, but I'd do some
looking around there to find out.
Hank
Lou
That's kind of funny to me, but I have had a few cold ones under my
belt. Comparing a vintage car that might sell in the 50 to 100 K price
range to a radio that might bring $50 at a radio show ...... I would
maybe look for an AC chassis, like a 610 or some similar knob layout
to replace it. Other wise change out the transformer and tubes to make
it AC playable. There is no historic value to this radio. If there
were people would pay hundreds of dollars for it, not gonna happen.
It's a good looking cabinet, do what ever you like to make it
worthwhile to you.