Topic: original radio using 12 volts


fenbach    -- 08-12-2017 @ 10:22 PM
  anybody know how to power an original 6-volt positive ground radio in a 12-volt neg ground system?
thanks.


sarahcecelia    -- 08-13-2017 @ 9:33 AM
  Yup! Randy Rundle at WWW.Fifth Avenue internet garage.com, Clay Center, Kansas. makes a resistor for just that purpose! 785-632-3450. By the way-The radio doesn't car about pos., or neg. One of my 1950 cars is 12 volt, and it works fine.

Regards, Steve Lee


fenbach    -- 08-13-2017 @ 7:45 PM
  thanks steve,
you're right, the radio doesn't begin to know the difference between positive and negative ground. with a mechanical vibrator anyway.


Drbrown    -- 08-13-2017 @ 9:15 PM
  I understand electronic vibrators last longer but they may be sensitive to polarity.


51f1    -- 08-14-2017 @ 6:00 AM
  Speaking of polarity, when I was in school back in the stone age, I used t run car radios off of AC (with the vibrator in it) by simply connecting it to a 12-volt transformer. Old car radios were a lot better than those sold for home use.

Richard


JT Ford    -- 08-14-2017 @ 9:49 AM
  The new solid state vibrators are polarity sensitive...


fenbach    -- 08-15-2017 @ 11:47 AM
  i checked randy rundle's web site and found a page explaining why a 12 to 6 volt voltage reducer CAN'T be used with an original radio.

http://fifthaveinternetgarage.com/tech_tips_Why_cant_i_use_a_voltage_reducer.php

nevertheless, I found one one that seems to work just fine.

https://www.amazon.com/gp/product/B01CUA4KK8




TomO    -- 08-16-2017 @ 7:17 AM
  You are talking apples and oranges. The Rundle voltage reducer is just a high wattage resister and the converter that you bought appears to be a solid state regulator, probably a zener diode that will not convert the voltage and current to heat.

Tom


sarahcecelia    -- 08-16-2017 @ 1:00 PM
  Yeah, but like I previously told you, One of my 1950 cars is converted to 12 volts and the radio doesn't seem to know the difference.

Regards, Steve Lee


sarahcecelia    -- 08-16-2017 @ 1:04 PM
  Who wants to listen to an old AM radio anyway. I don't! You can't get anything worth listening to; but if you must, send it out and get it converted to 12 volt AM/FM.

Regards, Steve Lee


sarahcecelia    -- 08-16-2017 @ 1:05 PM
  Uh, you say 12 to 6volt? I think you mean 6 to 12 volt.

Regards, Steve Lee


sarahcecelia    -- 08-16-2017 @ 1:23 PM
  Your right, that's because it takes too many volts to operated the deal.

Regards, Steve Lee


sarahcecelia    -- 08-16-2017 @ 1:26 PM
  To listen to AM radio you have to be able to understand and speak Spanish very well!!!

Regards, Steve Lee


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