What is this Component? A Capacitor? What Kind? Anybody Know

[AlPro]

I am remaking this old Tube Amp, and I am also trying, at the same time to
make the schematic of it. But I am stuck on this component, I tried
to make a extended research... no clue of it. If anybody knows
what it is please tell me! Here's what's written on it:

98772-11
Red 150 MFD 150 VDC
Blue 100 MFD 35 VDC
Blk ComNeg
10816626 75°C


"Thanks"

 

[vandelay]

Re: What is this Component? A Capacitor? What Kind? Anybody

Seems to me it must be a dual capacitor, meaning two capacitors in the same package sharing common pin (Blk ComNeg). Quite common in tube gear. The blue 35V is likely for smoothing bias voltage, while the red high voltage one probably is used for smoothing the plate voltage, am I right?

 

[AlPro]

Re: What is this Component? A Capacitor? What Kind? Anybody

Here is a picture of it:

Is that What it is, if yes could you tell me how to write it for a schematic.

Thanks

 

[vandelay]

Re: What is this Component? A Capacitor? What Kind? Anybody

It most certainly is.

Write it as two separate (polarized) capacitors, one rated 100uF/35V and one 150uF/150V. You could mark the capacitor names with * and have a footnote about the capacitor package for authenticity. No reason from an electrical point of view, but could be useful if anyone should use your schematic to refurbish old tube gear.

Best regards.

EDIT; another suggestion, eg if your capacitor name is C6, you could name the capacitors C6a and C6b.

 

[AlPro]

Re: What is this Component? A Capacitor? What Kind? Anybody

Thanks for all this imformation it really helps, I would have one last question though.
How would you write this capacitor in a schematic like for example:

 

[elektronic]

Re: What is this Component? A Capacitor? What Kind? Anybody

Simply use two separate capacitors simbols as in almost every old tube schematic.
They are simply two capacitors on the same package.

 

[AlPro]

Re: What is this Component? A Capacitor? What Kind? Anybody

Could you show me a picture of how this would be written, or simply write it for example:

C1 C2
-----||-----||-----
| | |
| | |
| | |
Red Blue Black

 

[zolam]

Re: What is this Component? A Capacitor? What Kind? Anybody

vandelay is right 100%

 

[AlPro]

Re: What is this Component? A Capacitor? What Kind? Anybody

Could you show me a picture of how this would be written, or simply write it for example:

000C1000C2
-----||-----||-----
0000|00|00|0000
0000|00|00|0000
0000|00|00|0000
0Red0Blue0Black

The 0 are just to space between each wire line.

 

[btbass]

The sybol you are using for a capacitor is quite old and now obsolete.
You are drawing them upside down, by convention, the straight edge is positive and the curved end is negative.

 

[jvj1952]

People who know the old tube stuff are correct in confirming the part is a dual capacitor and its use, i.e. grid bias and plate voltage. I will add that these capacitors do not last forever and could be aged to the point where they will fail, perhaps catastrophically. My advice is to replace them as others have advised before you apply power to the circuit.