Philco 112 Condenser (after 172,000 ser No.)

2/3/2010 9:56:05 PMBob E

I have a question about Part No. 25 which is a by pass condenser rated at .25 mfd. There are three of this particular type condenser in this set. Number 25 has TWO black wires coming out of the right side and one is connects to the cathode of the Osc. tube. The other wire is not connected to anything. Wondering where it
is supposed to be connected to? The other caps that are like this have only one wire coming out of it. Of course there is the fine grounding wire that comes out of the guts of these caps and are soldered to the metal case. By the way these are stuffed in a metal case about the size of a credit card and are about 3/8 in thick. Anyone with experience with these that could shed some light for me?
Thanks, Bob

2/4/2010 7:15:13 PMEdd

Sir BoB E E E E E E. . . . . .

If that cap unit happens to have # 3557 marked on it, seems like that unit part number was for a DUAL section unit, with 2x .25's inside of it.

Otherwise the unit is doing a somewhat mundane function of being the cathode bypass.

If up against the " RF bypassing wall", a modern day .1 ufd disc ceramic might present a very substantially better ESR at that frequency.

73's de Edd

:I have a question about Part No. 25 which is a by pass condenser rated at .25 mfd. There are three of this particular type condenser in this set. Number 25 has TWO black wires coming out of the right side and one is connects to the cathode of the Osc. tube. The other wire is not connected to anything. Wondering where it
:is supposed to be connected to? The other caps that are like this have only one wire coming out of it. Of course there is the fine grounding wire that comes out of the guts of these caps and are soldered to the metal case. By the way these are stuffed in a metal case about the size of a credit card and are about 3/8 in thick. Anyone with experience with these that could shed some light for me?
:Thanks, Bob
:

2/8/2010 6:23:22 PMBob E

Edd,
Sooo,
Am I to gather from your reference to said Philco Part No. 3557 being a Double Cap that in MY set someone has inserted with no connection for one of cap leads?
...that perhaps that is all they had available in a previous repair session and snipped the end and left it hanging for dear life?
...also I see no info on the Replacement Parts data sheet that sez 3557 IS a double cap... Weird...it DOES indeed call it a number 3557 however. I have one more question to be posed in a separate post not to be confused with this one. (actually not to confuse me! :O)