Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

building a battery eliminator
#1

Hello,
This may sound like a stupid question...... Icon_redface
I have a Admiral 6T06-4A1 and i am going to try to build a battery eliminator for this 'farm radio'. My question is:
in the back of the radio, i see to thin wires on the left side (?antenna wires); and a 4 wire/4 prong on the right side, is this where the battery hooks up? Or is something missing? How would you hook up a battery eliminator to these prongs? Icon_confused
Thanks-
diyahnih
#2

Hi

To be able to do this successfully, you need the schematic for your radio which should show how the 4-pin connector is wired; i.e. which pin of the plug is connected to what terminal on the battery.

Bill (batterymaker) could help you out a lot more here...if he doesn't jump in, you might send him a PM or e-mail.

--
Ron Ramirez
Ferdinand IN
#3

Here's some info on that radio.
http://www.nostalgiaair.org/PagesByModel...000039.pdf

#4

Hello,
Thanks Ron & exray for the info on this radio Icon_biggrin --i need the help, i hope Bill 'batterymaker' will post to this topic.

Thanks-
diyahnih
#5

Whatcha need? Socket info?
[Image: http://users.mw.net/~bmorris/farmsocket.jpg]
#6

batterymaker,

I had to super glue the round brown piece that held the 4 metal prongs (it was broken in 3 pieces); but, i got that aha moment Icon_eek from your diagram--and It may not have the same exact dimensions, but it'll do. Thank you so much for your help.
diyahnih Icon_biggrin
#7

Ive built a few homebrew battery eliminators before. Seems there are some plans (schemats) avail online ( via google search) to build one similar to what AES sells. Seems radio-shack used to sell the needed transformer for about $4. Dont know if they still have it avail?
If you look closely at your broken socket, you can trace 2 of the wires back to chassis ground. Those are your radios (A- & B-) solder them in together to chassis, your done on the (-) hookup on chassis. You will need separate + leads to your battery-eliminator if you build one. You will need 1.5 volts dc for your tubes filaments string (A +), and 90v dc for (B+), and the (A&B -) will be the same connection to your radios ( A & B - neg chassis gnd) from a homebrew ac/dc pwr supply, making it a 3-point hookup instead of 4 since both the (-) ties together to the chassis gnd. If I remember correctly,a few diodes ,proper ratios simple transformer, & a few resistors can yield you a nice homebrew "regulated" DC farm radio ac to dc power supply for much less than AES sells theirs for high $$. Look online for a schematic to build your own: ( google search): "vintage radio battery eliminator" for a schematic. Good luck , the parts are cheap to build these type items!
#8

Texasrocker Wrote:=
If you look closely at your broken socket, you can trace 2 of the wires back to chassis ground. Those are your radios (A- & B-) solder them in together to chassis, your done on the (-) hookup on chassis.

wooopsie! B-minus will go to the chassis via R11, 390 ohms. Make sure this resistor is actually in place. In some designs it was part of the battery plug. Its the bias resistor for the whole radio.
#9

Texasrocker,

Thanks for the information, i appreciate the help with this radio.

diyahnih Icon_biggrin




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
The list of my radio & TV collection!
Hello Peter, Thank you for posting that !! Sincerely Richardradiorich — 09:40 AM
Eico 232 VTVM Schematic
It's a microwave antenna. ?;-p?. I substituted 1N4002s off the 6.3 vac winding for the 1.5 volt battery. Uniprobe is the...RodB — 05:50 PM
Eico 232 VTVM Schematic
Try BAMA for a schematic. Looks like a replacement power source for the D battery has been installed. The tube may be...Chas — 04:51 PM
Eico 232 VTVM Schematic
Is that a battery holder?morzh — 04:43 PM
Eico 232 VTVM Schematic
A friend gave me this Eico 232 VTVM and I'm having trouble locating the schematic for it. This one seems to be a later v...RodB — 04:17 PM
Var resistor id
Considering what it is in series with, I doubt there should be any power requirements. Of course, we should know wher...morzh — 03:23 PM
Var resistor id
Trim pot, about 1/2 watt part of focus divider. As stated 2k ohms. This appears to be a rusty chassis, resolder all ...Chas — 03:19 PM
Var resistor id
Its a Sylvania 400 oscilloscope. here is a clip of r-100. Would be nice to know the current required. Not listed in part...Martinj — 02:10 PM
The list of my radio & TV collection!
Thanks Richard. I hope you enjoy it. Here I have created an English section on the history of radio with videos in Engl...RadioSvit — 10:23 AM
The list of my radio & TV collection!
Hello RadioSvit, first all happy new year ! I will watch your new videos this week. Sincerely Richardradiorich — 09:19 AM

[-]
Who's Online
There are currently 9564 online users. [Complete List]
» 1 Member(s) | 9563 Guest(s)
Avatar

>