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Help identifying film capacitor on old amp board
- Thread starter Michael Kiggins
- Start date
630V rating and is 0.47 ufd . . . . . any vacuum tubes involved ? . . .or possibly just beinhg AC line related, if the unit is solid state.
No vacuum tubes. This board is 17 years old. It is using high heat transistors for power switching instead of mosfets. If that helps identify the age of the board. This is pulled out of an old MRI machine. I have leaky capacitors, so I decided i'm going to swap all the capacitors and transistors while I have the board pulled. Its a lot of over kill, but I don't want it to fail again in the near future.
How do you know the voltage is AC? I can send a pic of the front and back of the whole board if that would help.
Sir Michael Kiggins . . . . .
In those passing 17 years, looks like Siemens has almost, if not totally dropped out of that family of capacitor.
Seems like Panasonic has the industry favor now, with you wanting to use their RF and Microwave polypropylene version instead of the conventional standard polyester film dielectric.
Especially . . . for the more exacting demands imposed by your particular equipment’s design.
You say . . . .
How do you know the voltage is AC?
Until i saw your later photos,I thought that they also had a possibility of being used across an AC power input for filtering.
Now, I see them handling high frequency and high current power circuitry.
The rating is 630 VDC
Referencing :
http://www.mouser.com/Panasonic/Pas...apacitors/_/N-9x371?P=1z0wquaZ1yzvjj0Z1yp7zip
73's de Edd
In those passing 17 years, looks like Siemens has almost, if not totally dropped out of that family of capacitor.
Seems like Panasonic has the industry favor now, with you wanting to use their RF and Microwave polypropylene version instead of the conventional standard polyester film dielectric.
Especially . . . for the more exacting demands imposed by your particular equipment’s design.
You say . . . .
How do you know the voltage is AC?
Until i saw your later photos,I thought that they also had a possibility of being used across an AC power input for filtering.
Now, I see them handling high frequency and high current power circuitry.
The rating is 630 VDC
Referencing :
http://www.mouser.com/Panasonic/Pas...apacitors/_/N-9x371?P=1z0wquaZ1yzvjj0Z1yp7zip
73's de Edd
nevermind. I ordered the one you suggested.
Thanks
Thanks
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