Hello all,
Pontiac car radio, buffer cap. shows as .006 uf. I didn't have a .006 at 1600v but I have a .01 at 1600 volts. Put it in as a test and it works ok, anyone have any experience as to the added capitance will hurt the vibrator contacts. It is across the secondary windings and my though is that it should help reduce the spikes from the switching of the vibrator. If it was across the contacs I could see a problem but not being across the secondary.

Any advice.

Bob Z

=http://www.nostalgiaair.org/Resources/527/M0022527.htm

I usually have trouble finding caps at 1600vdc. So I would have put two .01 or .015 in SERIES. Most of the time I just use two 630v caps. Then their voltages would double, but the capacitance would be .005 or .0075 respectively. I've done this in dozens of radios and all worked fine with no recalls. A p-p voltage measurement on the O-scope usually reveals less than 1600v acorss this cap anyway. All in all what can you say if it works. It's not always rocket science!

:Hello all,
: Pontiac car radio, buffer cap. shows as .006 uf. I didn't have a .006 at 1600v but I have a .01 at 1600 volts. Put it in as a test and it works ok, anyone have any experience as to the added capitance will hurt the vibrator contacts. It is across the secondary windings and my though is that it should help reduce the spikes from the switching of the vibrator. If it was across the contacs I could see a problem but not being across the secondary.
:
:Any advice.
:
:Bob Z
:
:=http://www.nostalgiaair.org/Resources/527/M0022527.htm
:

It works fine, but somewhere way back in my mind I think I remember something about the capicator resonating with the transformer. Kind of fuzzy so not really sure. All i had handy was either the .01 or .1 at 1600 volts.
Thanks Bob

:I usually have trouble finding caps at 1600vdc. So I would have put two .01 or .015 in SERIES. Most of the time I just use two 630v caps. Then their voltages would double, but the capacitance would be .005 or .0075 respectively. I've done this in dozens of radios and all worked fine with no recalls. A p-p voltage measurement on the O-scope usually reveals less than 1600v acorss this cap anyway. All in all what can you say if it works. It's not always rocket science!
:
::Hello all,
:: Pontiac car radio, buffer cap. shows as .006 uf. I didn't have a .006 at 1600v but I have a .01 at 1600 volts. Put it in as a test and it works ok, anyone have any experience as to the added capitance will hurt the vibrator contacts. It is across the secondary windings and my though is that it should help reduce the spikes from the switching of the vibrator. If it was across the contacs I could see a problem but not being across the secondary.
::
::Any advice.
::
::Bob Z
::
::=http://www.nostalgiaair.org/Resources/527/M0022527.htm
::
: