Hello. I'm working on a Philco 48-124. C-10 is a .02mfd, going from the 50L6 plate to chassis ground. I don't have a .02; what about using two .05 in series? (I've got a drawer full of them.) I don't know how critical the value is in this case. Thanks for your consideration.

:Hello. I'm working on a Philco 48-124. C-10 is a .02mfd, going from the 50L6 plate to chassis ground. I don't have a .02; what about using two .05 in series? (I've got a drawer full of them.) I don't know how critical the value is in this case. Thanks for your consideration.
:
Hi, if you have two .01 you could put them side by side and get a .02. Our your idea of putting two .05's in series should work you should come up with a .025. I've noticed that alot of the caps on old radios are way out of tolerance and the radio works just fine, so you should have a little wiggle room. Good Luck, George T

::Hello. I'm working on a Philco 48-124. C-10 is a .02mfd, going from the 50L6 plate to chassis ground. I don't have a .02; what about using two .05 in series? (I've got a drawer full of them.) I don't know how critical the value is in this case. Thanks for your consideration.
::
:Hi, if you have two .01 you could put them side by side and get a .02. Our your idea of putting two .05's in series should work you should come up with a .025. I've noticed that alot of the caps on old radios are way out of tolerance and the radio works just fine, so you should have a little wiggle room. Good Luck, George T
:
Thanks, George. I'm still wondering what this cap does, since it's connected to chassis ground rather than B-. Low freq rolloff maybe?

:::Hello. I'm working on a Philco 48-124. C-10 is a .02mfd, going from the 50L6 plate to chassis ground. I don't have a .02; what about using two .05 in series? (I've got a drawer full of them.) I don't know how critical the value is in this case. Thanks for your consideration.
:::
::Hi, if you have two .01 you could put them side by side and get a .02. Our your idea of putting two .05's in series should work you should come up with a .025. I've noticed that alot of the caps on old radios are way out of tolerance and the radio works just fine, so you should have a little wiggle room. Good Luck, George T
::
:Thanks, George. I'm still wondering what this cap does, since it's connected to chassis ground rather than B-. Low freq rolloff maybe?

Dan:
I believe that cap is to prevent high frequency oscillations that might happen if, well, if it weren't there.
Lewis
:

::::Hello. I'm working on a Philco 48-124. C-10 is a .02mfd, going from the 50L6 plate to chassis ground. I don't have a .02; what about using two .05 in series? (I've got a drawer full of them.) I don't know how critical the value is in this case. Thanks for your consideration.
::::
:::Hi, if you have two .01 you could put them side by side and get a .02. Our your idea of putting two .05's in series should work you should come up with a .025. I've noticed that alot of the caps on old radios are way out of tolerance and the radio works just fine, so you should have a little wiggle room. Good Luck, George T
:::
::Thanks, George. I'm still wondering what this cap does, since it's connected to chassis ground rather than B-. Low freq rolloff maybe?
:
:Dan:
:I believe that cap is to prevent high frequency oscillations that might happen if, well, if it weren't there.
:Lewis
::
:
:
Thanks, Lewis. Appreciate your help. It's amazing the stuff I forgot since college electonics. Funny thing is - - I still remember how to use my K&E slide rule. . . . . .

:::::Hello. I'm working on a Philco 48-124. C-10 is a .02mfd, going from the 50L6 plate to chassis ground. I don't have a .02; what about using two .05 in series? (I've got a drawer full of them.) I don't know how critical the value is in this case. Thanks for your consideration.
:::::
::::Hi, if you have two .01 you could put them side by side and get a .02. Our your idea of putting two .05's in series should work you should come up with a .025. I've noticed that alot of the caps on old radios are way out of tolerance and the radio works just fine, so you should have a little wiggle room. Good Luck, George T
::::
:::Thanks, George. I'm still wondering what this cap does, since it's connected to chassis ground rather than B-. Low freq rolloff maybe?
::
::Dan:
::I believe that cap is to prevent high frequency oscillations that might happen if, well, if it weren't there.
::Lewis
:::
::
::
:Thanks, Lewis. Appreciate your help. It's amazing the stuff I forgot since college electonics. Funny thing is - - I still remember how to use my K&E slide rule. . . . . .

Was it a Log Log Duplex Decitrig? Mine was.
Lewis
:

::::::Hello. I'm working on a Philco 48-124. C-10 is a .02mfd, going from the 50L6 plate to chassis ground. I don't have a .02; what about using two .05 in series? (I've got a drawer full of them.) I don't know how critical the value is in this case. Thanks for your consideration.
::::::
:::::Hi, if you have two .01 you could put them side by side and get a .02. Our your idea of putting two .05's in series should work you should come up with a .025. I've noticed that alot of the caps on old radios are way out of tolerance and the radio works just fine, so you should have a little wiggle room. Good Luck, George T
:::::
::::Thanks, George. I'm still wondering what this cap does, since it's connected to chassis ground rather than B-. Low freq rolloff maybe?
:::
:::Dan:
:::I believe that cap is to prevent high frequency oscillations that might happen if, well, if it weren't there.
:::Lewis
::::
:::
:::
::Thanks, Lewis. Appreciate your help. It's amazing the stuff I forgot since college electonics. Funny thing is - - I still remember how to use my K&E slide rule. . . . . .
:
:
:Was it a Log Log Duplex Decitrig? Mine was.
:Lewis
::
:
The one I used most was my Dad's old K&E; he used it when he was in college in the '30's - can't remember the model, but it has an ivory veneer. I did have a "fancy" bamboo slide rule with a "P" scale (which I never used), but that one's long gone. I was showing a grand-daughter how to use a cheapo plastic one. She thought it was some sort of Penn & Teller prop - - doing math with a stick, c'mon!!! Kids could really use some of that old-fashioned discipline in their education these days. Mashing buttons doesn't teach you how to think & reason things out.

The cap is there to roll off mid-to-high frequencies. Unfortunately it also turns the output transformer primary into a tank circuit, and so you get a sharp peak at a mid-range frequency. Gives old radios that distinct sharp sound, depending on value. Changing the value will move the roll-off slope up or down, and will also change the resonant peak.

Connecting to the cathode instead of to the chassis side of the cathode resistor tends to have a stronger affect.