power supply - RCA model 29k

2/28/2003 9:13:05 PMSam Brown

I'm looking for a power supply for an RCA model 29k. I have looked in Antique Electronic Supply cat. but am not quite sure of what to buy. Does anyone have a part no. or a pwr supply for sell.

Thanks,
Sam

2/28/2003 11:09:28 PMNorm Leal

Hi Sam

The RCA 29K schematic that I found is an AC operated radio. It just plugs in and doesn't need a separate power supply.

http://www.nostalgiaair.org/Riders/showinfo.asp?PATH=RCA&IMG=_RCA_13-35.gif&INF=29K

Norm

:I'm looking for a power supply for an RCA model 29k. I have looked in Antique Electronic Supply cat. but am not quite sure of what to buy. Does anyone have a part no. or a pwr supply for sell.
:
:Thanks,
:Sam

3/1/2003 1:56:34 PMJohn McPherson

Hi,
There were some RCA Models that used an "Electrifier", a power supply that was sold with certain farm radios so they could be sold in areas where there was not full electrification.

If yours has a OZ4 tube, it has the electrifier. It is listed in in Riders, but not always clearly.

I have a similar model, not sure of which one it is at the moment.

:Hi Sam
:
: The RCA 29K schematic that I found is an AC operated radio. It just plugs in and doesn't need a separate power supply.
:
:http://www.nostalgiaair.org/Riders/showinfo.asp?PATH=RCA&IMG=_RCA_13-35.gif&INF=29K
:
:Norm
:
::I'm looking for a power supply for an RCA model 29k. I have looked in Antique Electronic Supply cat. but am not quite sure of what to buy. Does anyone have a part no. or a pwr supply for sell.
::
::Thanks,
::Sam

3/3/2003 9:37:09 PMSam Brown

Norm,
Thanks for the reply. I guess I have my terminology wrong. Yes it is AC but I need the transformer that feeds the rect tube 5Y3G. Can you help.

Thanks
Sam

3/4/2003 10:49:10 AMNorm Leal

Hi Sam

You can find a large list of transformers here:

http://www.oldradioparts.com/2a23efl.txt

You already know about AES. You need a transformer that fits on your radio chassis. There are usually 3 secondary windings. A 5Y3 requires 5 volts @ 2 amps for filament. Other tubes require 6.3 volts. Current for most radios will be around 2 amps. Your radio has more tubes and should have a 3 amp winding.

Also need a high voltage winding. Sometimes voltage is indicated on a schematic. If not 275-300 each side of center tap will be ok. Your radio draws nearly 80 ma. Use a 90 ma rated transformer.

Norm

:Norm,
:Thanks for the reply. I guess I have my terminology wrong. Yes it is AC but I need the transformer that feeds the rect tube 5Y3G. Can you help.
:
:Thanks
:Sam
:
:
::Hi Sam
::
:: The RCA 29K schematic that I found is an AC operated radio. It just plugs in and doesn't need a separate power supply.
::
::http://www.nostalgiaair.org/Riders/showinfo.asp?PATH=RCA&IMG=_RCA_13-35.gif&INF=29K
::
::Norm
::
:::I'm looking for a power supply for an RCA model 29k. I have looked in Antique Electronic Supply cat. but am not quite sure of what to buy. Does anyone have a part no. or a pwr supply for sell.
:::
:::Thanks,
:::Sam

3/4/2003 10:52:35 AMNorm Leal

Hi Sam

Just a quick change. That last line should say, Use a transformer with 90 ma rated high voltage winding.

Norm

:Hi Sam
:
: You can find a large list of transformers here:
:
:http://www.oldradioparts.com/2a23efl.txt
:
: You already know about AES. You need a transformer that fits on your radio chassis. There are usually 3 secondary windings. A 5Y3 requires 5 volts @ 2 amps for filament. Other tubes require 6.3 volts. Current for most radios will be around 2 amps. Your radio has more tubes and should have a 3 amp winding.
:
: Also need a high voltage winding. Sometimes voltage is indicated on a schematic. If not 275-300 each side of center tap will be ok. Your radio draws nearly 80 ma. Use a 90 ma rated transformer.
:
:Norm
:
::Norm,
::Thanks for the reply. I guess I have my terminology wrong. Yes it is AC but I need the transformer that feeds the rect tube 5Y3G. Can you help.
::
::Thanks
::Sam
::
::
:::Hi Sam
:::
::: The RCA 29K schematic that I found is an AC operated radio. It just plugs in and doesn't need a separate power supply.
:::
:::http://www.nostalgiaair.org/Riders/showinfo.asp?PATH=RCA&IMG=_RCA_13-35.gif&INF=29K
:::
:::Norm
:::
::::I'm looking for a power supply for an RCA model 29k. I have looked in Antique Electronic Supply cat. but am not quite sure of what to buy. Does anyone have a part no. or a pwr supply for sell.
::::
::::Thanks,
::::Sam