auto radio capacitors - Printable Version
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auto radio capacitors - radio dog - 01-31-2013
wondering what would be best capicators to use in my 55 t bird radio. orange drops- yellow polyster type- ? . it was made by motorola and has the origional ceramic tubular caps. they see a lot more variance in temperature than home radios. appreciate any help from you auto radio guys----------- thanks
RE: auto radio capacitors - Ron Ramirez - 01-31-2013
Moved to Philco-Transitone Auto Radios since the question is about an auto radio.
The yellow film should be OK but if you are using your '55 T-Bird and you have concerns about the yellow film type, then go ahead and splurge on the orange drops.
RE: auto radio capacitors - codefox1 - 01-31-2013
Agree. I'd use orange drops on this too. And make very sure to use a 1600 volters or better in the vibrator circuit and in output circuit if there is one to suppress oscillations. (I am assuming you have a conventional original tube radio from the era.)
Never hurts to post an image of schematic or link to get many opinions. Been many moons since I worked on a car radio.
RE: auto radio capacitors - radio dog - 01-31-2013
this is the origional motorola 5mfs tube radio made for the t bird. the only cap over 600 v is the i guess the buffer cap which is .02 @ 1000 volts.the only schematic i have is the radio manual and i cant get a big enough picture to post.
RE: auto radio capacitors - Arran - 01-31-2013
you won't have any problems with the yellow polyester caps, internally the orange drops are no different, just test them first before installing them. In most cases you could use 400 volt caps in a car radio with no problems, the B+ voltage is normally lower then an AC set. The buffer cap should be a high voltage job, but make sure that you replace the original with one of the capacity called for on the schematic.
Regards
Arran
RE: auto radio capacitors - radio dog - 01-31-2013
i will use 630 v on all the paper caps .i dont have room for 1600 v orange drops and the schematic calls for 200 and 400 volts .i will get the buffer in .02 @1600 the schematic is .02 a 1000. that should leave room for the new electrolytics under the chassis as the can will not hold them to restuff.thanks for the help.dont know what i would do without you guys. i learn so much every time i post.