If you are going to service the occasional farm radio it would probably be a good idea to purchase or build (kit) a variable DC power supply to provide the B+ supply.
You will most likely also need a 1.5v A+ supply but you can use a battery for that if you have to.
Googling "variable DC power supply" will result in lots of hits.
t Googling "Variable DC power supply" will result in lots of hits.
You are lucky on that radio. Many use a pair of 48 tubes for output. Plug it into 120 volts AC and they burn out instantly.
These radio have a plug than can be inserted into 120 volts. In your radio tube filaments are in series. Usually only one of the series burns out, saving the others.
The radio does require 32 volts DC. Two amps would be enough. A power supply can easily be made but requires a rectifier and filter caps besides the transformer.
Should be able to find a surplus 24 volts supply which can be adjusted higher. Even 30 volts will be enough.
Norm
:Hi All, Well a customer sent me a Airline 14WG756 farm radio. They didn't know anything about it or even a model number when we where corresponding. They sent a couple pictures and I seen it had a plug on it like a 120 VAC but when the radio arrived it is ment to run off of 32 VDC with a range of 25 to 42 VDC. Is there some kind of transformer that will have a 120 VAC input and a 32 VDC output that I can use or am I going to have to do something else to make it work? I'm hoping that over the years nobody has plugged it into a 120 VAC outlet. Have not looked under the chassis yet. I'm almost afraid too. I wish someone would send me a AA5 but I guess that would be to easy. LOL Thank You, George T
:
http://www.nostalgiaair.org/PagesByModel/145/M0011145.pdf
:George
:
: You are lucky on that radio. Many use a pair of 48 tubes for output. Plug it into 120 volts AC and they burn out instantly.
:
: These radio have a plug than can be inserted into 120 volts. In your radio tube filaments are in series. Usually only one of the series burns out, saving the others.
:
: The radio does require 32 volts DC. Two amps would be enough. A power supply can easily be made but requires a rectifier and filter caps besides the transformer.
:
: Should be able to find a surplus 24 volts supply which can be adjusted higher. Even 30 volts will be enough.
:
:Norm
:
:
:
:
::Hi All, Well a customer sent me a Airline 14WG756 farm radio. They didn't know anything about it or even a model number when we where corresponding. They sent a couple pictures and I seen it had a plug on it like a 120 VAC but when the radio arrived it is ment to run off of 32 VDC with a range of 25 to 42 VDC. Is there some kind of transformer that will have a 120 VAC input and a 32 VDC output that I can use or am I going to have to do something else to make it work? I'm hoping that over the years nobody has plugged it into a 120 VAC outlet. Have not looked under the chassis yet. I'm almost afraid too. I wish someone would send me a AA5 but I guess that would be to easy. LOL Thank You, George T
::
:
:
:Schematic
:http://www.nostalgiaair.org/PagesByModel/145/M0011145.pdf
:
:
::George
::
:: You are lucky on that radio. Many use a pair of 48 tubes for output. Plug it into 120 volts AC and they burn out instantly.
::
:: These radio have a plug than can be inserted into 120 volts. In your radio tube filaments are in series. Usually only one of the series burns out, saving the others.
::
:: The radio does require 32 volts DC. Two amps would be enough. A power supply can easily be made but requires a rectifier and filter caps besides the transformer.
::
:: Should be able to find a surplus 24 volts supply which can be adjusted higher. Even 30 volts will be enough.
::
::Norm
::
::
::
::
:::Hi All, Well a customer sent me a Airline 14WG756 farm radio. They didn't know anything about it or even a model number when we where corresponding. They sent a couple pictures and I seen it had a plug on it like a 120 VAC but when the radio arrived it is ment to run off of 32 VDC with a range of 25 to 42 VDC. Is there some kind of transformer that will have a 120 VAC input and a 32 VDC output that I can use or am I going to have to do something else to make it work? I'm hoping that over the years nobody has plugged it into a 120 VAC outlet. Have not looked under the chassis yet. I'm almost afraid too. I wish someone would send me a AA5 but I guess that would be to easy. LOL Thank You, George T
:::
::
::
:
:
:Hi Norm, I seen were the radio will work with a 24 VDC power supply, but that is on the low end. I was checking out some power supplies on a Google search and they sure think a lot of them. Costly. This unfortunately is my first farm radio. If I had know it from the get go I would have turned it down. I though a 30 something transformer would work. Is there a schematic somewhere that would show a DIY power supply?. Been checking out You Tube but not seeing anything with enough power. Thank You, George T
:
:
:
::Schematic
::http://www.nostalgiaair.org/PagesByModel/145/M0011145.pdf
::
::
:::George
:::
::: You are lucky on that radio. Many use a pair of 48 tubes for output. Plug it into 120 volts AC and they burn out instantly.
:::
::: These radio have a plug than can be inserted into 120 volts. In your radio tube filaments are in series. Usually only one of the series burns out, saving the others.
:::
::: The radio does require 32 volts DC. Two amps would be enough. A power supply can easily be made but requires a rectifier and filter caps besides the transformer.
:::
::: Should be able to find a surplus 24 volts supply which can be adjusted higher. Even 30 volts will be enough.
:::
:::Norm
:::
:::
:::
:::
::::Hi All, Well a customer sent me a Airline 14WG756 farm radio. They didn't know anything about it or even a model number when we where corresponding. They sent a couple pictures and I seen it had a plug on it like a 120 VAC but when the radio arrived it is ment to run off of 32 VDC with a range of 25 to 42 VDC. Is there some kind of transformer that will have a 120 VAC input and a 32 VDC output that I can use or am I going to have to do something else to make it work? I'm hoping that over the years nobody has plugged it into a 120 VAC outlet. Have not looked under the chassis yet. I'm almost afraid too. I wish someone would send me a AA5 but I guess that would be to easy. LOL Thank You, George T
::::
:::
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:
:
You don't need 10 amps and I'm not sure how much filtering is required but that idea will work.
Since the supply is rated 10 amps transformer will be larger, heavier and cost more than a smaller one. This supply has a 22,000 mf filter cap. Can't tell until you try if this is enough filtering. Usually for radio we use two filters with a choke between them. That can be modified later if necessary.
One other thing. Since the power supply doesn't have a regulated output voltage will be higher with a lighter load. That also can be taken care of later with resistance.
Norm
:Hi Norm, could you check out this link and see if you think it would work on the radio? Thanks Again, George http://pminmo.com/simple-power-supply
:
:
:
::Hi Norm, I seen were the radio will work with a 24 VDC power supply, but that is on the low end. I was checking out some power supplies on a Google search and they sure think a lot of them. Costly. This unfortunately is my first farm radio. If I had know it from the get go I would have turned it down. I though a 30 something transformer would work. Is there a schematic somewhere that would show a DIY power supply?. Been checking out You Tube but not seeing anything with enough power. Thank You, George T
::
::
::
:::Schematic
:::http://www.nostalgiaair.org/PagesByModel/145/M0011145.pdf
:::
:::
::::George
::::
:::: You are lucky on that radio. Many use a pair of 48 tubes for output. Plug it into 120 volts AC and they burn out instantly.
::::
:::: These radio have a plug than can be inserted into 120 volts. In your radio tube filaments are in series. Usually only one of the series burns out, saving the others.
::::
:::: The radio does require 32 volts DC. Two amps would be enough. A power supply can easily be made but requires a rectifier and filter caps besides the transformer.
::::
:::: Should be able to find a surplus 24 volts supply which can be adjusted higher. Even 30 volts will be enough.
::::
::::Norm
::::
::::
::::
::::
:::::Hi All, Well a customer sent me a Airline 14WG756 farm radio. They didn't know anything about it or even a model number when we where corresponding. They sent a couple pictures and I seen it had a plug on it like a 120 VAC but when the radio arrived it is ment to run off of 32 VDC with a range of 25 to 42 VDC. Is there some kind of transformer that will have a 120 VAC input and a 32 VDC output that I can use or am I going to have to do something else to make it work? I'm hoping that over the years nobody has plugged it into a 120 VAC outlet. Have not looked under the chassis yet. I'm almost afraid too. I wish someone would send me a AA5 but I guess that would be to easy. LOL Thank You, George T
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:
:
:
: You don't need 10 amps and I'm not sure how much filtering is required but that idea will work.
:
: Since the supply is rated 10 amps transformer will be larger, heavier and cost more than a smaller one. This supply has a 22,000 mf filter cap. Can't tell until you try if this is enough filtering. Usually for radio we use two filters with a choke between them. That can be modified later if necessary.
:
: One other thing. Since the power supply doesn't have a regulated output voltage will be higher with a lighter load. That also can be taken care of later with resistance.
:
:Norm
:
::Hi Norm, could you check out this link and see if you think it would work on the radio? Thanks Again, George http://pminmo.com/simple-power-supply
::
::
::
:::Hi Norm, I seen were the radio will work with a 24 VDC power supply, but that is on the low end. I was checking out some power supplies on a Google search and they sure think a lot of them. Costly. This unfortunately is my first farm radio. If I had know it from the get go I would have turned it down. I though a 30 something transformer would work. Is there a schematic somewhere that would show a DIY power supply?. Been checking out You Tube but not seeing anything with enough power. Thank You, George T
:::
:::
:::
::::Schematic
::::http://www.nostalgiaair.org/PagesByModel/145/M0011145.pdf
::::
::::
:::::George
:::::
::::: You are lucky on that radio. Many use a pair of 48 tubes for output. Plug it into 120 volts AC and they burn out instantly.
:::::
::::: These radio have a plug than can be inserted into 120 volts. In your radio tube filaments are in series. Usually only one of the series burns out, saving the others.
:::::
::::: The radio does require 32 volts DC. Two amps would be enough. A power supply can easily be made but requires a rectifier and filter caps besides the transformer.
:::::
::::: Should be able to find a surplus 24 volts supply which can be adjusted higher. Even 30 volts will be enough.
:::::
:::::Norm
:::::
:::::
:::::
:::::
::::::Hi All, Well a customer sent me a Airline 14WG756 farm radio. They didn't know anything about it or even a model number when we where corresponding. They sent a couple pictures and I seen it had a plug on it like a 120 VAC but when the radio arrived it is ment to run off of 32 VDC with a range of 25 to 42 VDC. Is there some kind of transformer that will have a 120 VAC input and a 32 VDC output that I can use or am I going to have to do something else to make it work? I'm hoping that over the years nobody has plugged it into a 120 VAC outlet. Have not looked under the chassis yet. I'm almost afraid too. I wish someone would send me a AA5 but I guess that would be to easy. LOL Thank You, George T
::::::
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:::::hi george. just wanted to say that i built a few power supplies useing a 28 volt transformer that i found on ebay. they work great.
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:That sounds like a plan, That power supply that I put the link to should work but it is like an over kill with the 10 amp rating. They say it cost around $55.00 to build. Might give it a shot. I check out transformers from Radio Daze and it would cost about the same. Thank Again, George T
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:Hi Paul, is there any way you could draw a picture of your power supply connections and send it to my email address. "thurst5761@aol.com" It would be the one with the 24 and 6.3 volt transformers. I'm new at this power supply stuff. If you can just put transformer in subject line so I know it isn't spam. Thank You So Much, George
:Hi All, Well a customer sent me a Airline 14WG756 farm radio. They didn't know anything about it or even a model number when we where corresponding. They sent a couple pictures and I seen it had a plug on it like a 120 VAC but when the radio arrived it is ment to run off of 32 VDC with a range of 25 to 42 VDC. Is there some kind of transformer that will have a 120 VAC input and a 32 VDC output that I can use or am I going to have to do something else to make it work? I'm hoping that over the years nobody has plugged it into a 120 VAC outlet. Have not looked under the chassis yet. I'm almost afraid too. I wish someone would send me a AA5 but I guess that would be to easy. LOL Thank You, George T
:
:You can buy 32V power supplies here: https://www.acopian.com/power-supply-voltages/32-volt-power-supplies.htm
:
:
::Hi All, Well a customer sent me a Airline 14WG756 farm radio. They didn't know anything about it or even a model number when we where corresponding. They sent a couple pictures and I seen it had a plug on it like a 120 VAC but when the radio arrived it is ment to run off of 32 VDC with a range of 25 to 42 VDC. Is there some kind of transformer that will have a 120 VAC input and a 32 VDC output that I can use or am I going to have to do something else to make it work? I'm hoping that over the years nobody has plugged it into a 120 VAC outlet. Have not looked under the chassis yet. I'm almost afraid too. I wish someone would send me a AA5 but I guess that would be to easy. LOL Thank You, George T
::
:
:
I think that this was the very last Date Time Group of all the replies, so I'll start after it. I see that some one gave you schematic referencing to a basic brute force power supply, and using that info, along with a reasonably priced transformer . . . . and that pre referenced one is the lowest price that I know of.
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:Thank You Stephen, was hoping to build one for a fraction of the price. If you look at the site I listed earlier they have a schematic for one and I can get a lower amp transformer than the one listed. If you click on the transformer part number they list other transformers, only need a 2 amp. Just not really sure if it will work properly. Radio Daze sent me some info on building one, but their transformers are pretty pricey. Thank You, George T
:
:
::You can buy 32V power supplies here: https://www.acopian.com/power-supply-voltages/32-volt-power-supplies.htm
::
::
:::Hi All, Well a customer sent me a Airline 14WG756 farm radio. They didn't know anything about it or even a model number when we where corresponding. They sent a couple pictures and I seen it had a plug on it like a 120 VAC but when the radio arrived it is ment to run off of 32 VDC with a range of 25 to 42 VDC. Is there some kind of transformer that will have a 120 VAC input and a 32 VDC output that I can use or am I going to have to do something else to make it work? I'm hoping that over the years nobody has plugged it into a 120 VAC outlet. Have not looked under the chassis yet. I'm almost afraid too. I wish someone would send me a AA5 but I guess that would be to easy. LOL Thank You, George T
Check this one:
http://www.aliexpress.com/product-fm/438961212-60-180W-DC5-12-15-24-32-48V-for-selected-switching-power-supply-wholesalers.html
In just dropping that complete unit in the battery compartment area, one MIGHT then be met with the receivers reception being full of birdies and whistles. This is sort of a “Ya’ jes gotta buy it and try it situation “ . . . . .in order to see if this type of power supply design can work for you . . . .as compared to the old school linear power supply, with it just rectifying and working with 60~. |
:Hard to beat $20
:Check this one:
:http://www.aliexpress.com/product-fm/438961212-60-180W-DC5-12-15-24-32-48V-for-selected-switching-power-supply-wholesalers.html
:
:
:
:
: : : :  : : : : : : : :Sir George Teeeee. . . . . : : :The just above mentioned complete power supply is extraordinaire at pricing considerations . : : :Particularly with its “amortized” shipping rate . . . . . but, along with its adjunct stipulations: : : :• China Post Air Mail : : :$1.79 : : :15-40 Days : : : (It may take longer during the holiday seasons.) : : :IMPORTANT: China Post Air Mail deliveries might result in delays and lost parcels : (if our plane ditches in the South China Sea or Pacific Ocean.) : : : : :In just dropping that complete unit in the battery compartment area, one MIGHT then be met with the receivers reception being full of birdies and whistles. : : :That, being by virtue of the units design being of a switch mode design. : : :In which case, the units full rectified AC line voltage is resulting in an ~160 VDC level which is then passed over to a power FET which operates in the decades on up to 100’s of Khz frequency at variable pulse widths to regulate the output voltage. : : :With that perforated housing, or just being on the output power buss . . . . you just might end up picking radiating harmonics of that “RF trash”. : : : :This is sort of a “Ya’ jes gotta buy it and try it situation “ . . . . .in order to see if this type of power supply design can work for you . . . .as compared to the old school linear power supply, with it just rectifying and working with 60~. : : : : : :73's de Edd : : : : : :The early bird who catches the worm usually works for someone who comes in late and owns the worm farm.. : : : : :  : : : |
:
:
:
:
::Hard to beat $20
::Check this one:
::http://www.aliexpress.com/product-fm/438961212-60-180W-DC5-12-15-24-32-48V-for-selected-switching-power-supply-wholesalers.html
::
::agree with edd. he is the best on the net. sorry unable to send email. tried to set it up according to the isp provider but unable to make it work.
:
:
::
::
:: :: :: :: :: :: :: :: :: :: :: ::Sir George Teeeee. . . . . :: :: ::The just above mentioned complete power supply is extraordinaire at pricing considerations . :: :: ::Particularly with its “amortized” shipping rate . . . . . but, along with its adjunct stipulations: :: :: ::• China Post Air Mail :: :: ::$1.79 :: :: ::15-40 Days :: :: :: (It may take longer during the holiday seasons.) :: :: ::IMPORTANT: China Post Air Mail deliveries might result in delays and lost parcels :: (if our plane ditches in the South China Sea or Pacific Ocean.) :: :: :: :: ::In just dropping that complete unit in the battery compartment area, one MIGHT then be met with the receivers reception being full of birdies and whistles. :: :: ::That, being by virtue of the units design being of a switch mode design. :: :: ::In which case, the units full rectified AC line voltage is resulting in an ~160 VDC level which is then passed over to a power FET which operates in the decades on up to 100’s of Khz frequency at variable pulse widths to regulate the output voltage. :: :: ::With that perforated housing, or just being on the output power buss . . . . you just might end up picking radiating harmonics of that “RF trash”. :: :: :: ::This is sort of a “Ya’ jes gotta buy it and try it situation “ . . . . .in order to see if this type of power supply design can work for you . . . .as compared to the old school linear power supply, with it just rectifying and working with 60~. :: :: :: :: :: ::73's de Edd :: :: :: :: :: ::The early bird who catches the worm usually works for someone who comes in late and owns the worm farm.. :: :: :: :: :: :: :: :: |
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:::Hard to beat $20
:::Check this one:
:::http://www.aliexpress.com/product-fm/438961212-60-180W-DC5-12-15-24-32-48V-for-selected-switching-power-supply-wholesalers.html
:::
:::agree with edd. he is the best on the net. sorry unable to send email. tried to set it up according to the isp provider but unable to make it work.
::
::
:
:Hi All,
I'm fixin to jump on my trusty steed and mosie over to Ratilio Shack and see what I can turn up. I did find a transformer that should work but the shipping was more than the transformer. Sir Edd I have a friend that repairs AC units and I'm sure he has a transformer but when he comes over you think he is going to homestead. I figured it was better just to spend the money.LOL It's a 12-ct-12 VDC at 2 amps for under 8 dollars. I think with all of your help I pretty well got it figured out. We'll see if it keeps the smoke in it. Probably will start it within the next week depending on snail mail delivery. Do you guys think a 2200 mfd cap should work with a bridge rectumfire? Will let you know what happens and if you don't hear from me again, things went terribly wrong. Thanks a Million, George T
I was worried about switching noise too because I have the 12volt - 12amp version that I use to supply my Malibu walkway lights.
I have that unit mounted within 12 inches of my radio area and I didn't want it to kill my AM radio joy.
Here's the one I bought. I only paid $19.99 on Ebay including shipping.
It works flawlessly and there is absolutely no RFI that I have heard yet at all.
Here is is for sale at about $24
http://store.iiic.cc/index.php?main_page=product_info&products_id=28674&zenid=ec79q2odjhflqug2e8h0pmmrd3