Please Subscribe! If you are enjoying our series of videos take a moment to subscribe and get notices when new videos are release. Lots of interesting material coming up in the next few months.
Pretty much all of these type of caps these days have a polyester dielectric. But some still call them mylar. Heres a great wiki on all the types and construction of the various types. en.wikipedia.org/wiki/Film_capacitor#:~:text=Polyester%20film%20capacitors%20are%20film,well%20as%20film%2Ffoil%20types.
I have my filter cap open and wondered how close do I need to be to 60 and 20 mfd on my new caps? Do you recommend a supply site? thanks for all the help
Sorry, I am doing my s76, same cap as the one in this video, 60-20-20. I was searching around some different sites but didn't really see any 60mfd, also did you use axial caps? that's what it looked like in video. Dremel wheel worked nice to cut open. thanks@@MikesRadioRepairRestoration
Not sure I understand what you are suggesting. Caps are Voltage Rated. Caps of the same type can be rated from 200 to 1600 Vdc. There are specific very high voltage caps like ceramic door knob caps......But in so far as these common tube radio caps, they are rated in WVDC, Working Volts DC.
In many modern day capacitors the outer foil theory no longer applies. Modern film caps are non inductive caps and do not have an outer foil. Film caps are not spirally wound and actually have end caps. If you are concerned about hum pickup on the outer foil then shield the cap and ground the shield. Which by the way is how the old electrolytic can capacitors were made. Talk about a source fir hum, as high voltage 60 cycle fields abound., think about it.
Please Subscribe! If you are enjoying our series of videos take a moment to subscribe and get notices when new videos are release. Lots of interesting material coming up in the next few months.
Great advice, looking forward to the next one, thanks.
Excellent video, thank you..
That was helpful...thanks!
Great info! I wondered about those domino looking caps
facebook.com/photo?fbid=218971034596060&set=gm.1064596181333228&idorvanity=1055789698880543
Those yellow film capacitors are they mylar ?
Pretty much all of these type of caps these days have a polyester dielectric. But some still call them mylar. Heres a great wiki on all the types and construction of the various types. en.wikipedia.org/wiki/Film_capacitor#:~:text=Polyester%20film%20capacitors%20are%20film,well%20as%20film%2Ffoil%20types.
I have my filter cap open and wondered how close do I need to be to 60 and 20 mfd on my new caps? Do you recommend a supply site? thanks for all the help
What radio?
Sorry, I am doing my s76, same cap as the one in this video, 60-20-20. I was searching around some different sites but didn't really see any 60mfd, also did you use axial caps? that's what it looked like in video. Dremel wheel worked nice to cut open. thanks@@MikesRadioRepairRestoration
@@jamesw-c2q 68uF 20uF 20uF is fine. Radial. Full tutorial here - patreon.com/MikesRadioRepairRestoration
Ok thanks again, you have a lot of good videos!@@MikesRadioRepairRestoration
could you go over what capacitors are high voltage.
Not sure I understand what you are suggesting. Caps are Voltage Rated. Caps of the same type can be rated from 200 to 1600 Vdc. There are specific very high voltage caps like ceramic door knob caps......But in so far as these common tube radio caps, they are rated in WVDC, Working Volts DC.
Some of those domino mica caps were actually paper caps, especially those made during WW2 when mica was scarce.
In many modern day capacitors the outer foil theory no longer applies. Modern film caps are non inductive caps and do not have an outer foil. Film caps are not spirally wound and actually have end caps. If you are concerned about hum pickup on the outer foil then shield the cap and ground the shield. Which by the way is how the old electrolytic can capacitors were made. Talk about a source fir hum, as high voltage 60 cycle fields abound., think about it.
Strange sound, maybe some bad cap?bye.