Aluminum Filter Capacitors - Printable Version

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+--- Thread: Aluminum Filter Capacitors (/showthread.php?tid=20840)

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Aluminum Filter Capacitors - Steve Davis - 01-07-2020

A couple of weeks ago, I bought a box of aluminum electrolytic capacitors from a fellow on "ARF". They were all twist lock and PC mount. I have a few Philco chassis that were missing the filter caps, one I had robbed for the 90 I just restored and a couple that were missing them already. The plan is to gut the cans, re-stuff and modify the mount to the large threaded stud. Yeah, I know aluminum cans are not original on the early Philcos but I figure aluminum cans look better than empty holes.
 [Image: https://live.staticflickr.com/65535/49347688608_cda59654c3_k.jpg]100_0294 by Steve Davis, on Flickr

I went to the Habitat For Humanity Restore looking for PVC pipe fittings and found these schedule 80 unions for 50 cents each.
[Image: https://live.staticflickr.com/65535/49347697468_eda7b0f2c0_k.jpg]100_0290 by Steve Davis, on Flickr

[Image: https://live.staticflickr.com/65535/49348362122_3882b20438_k.jpg]100_0291 by Steve Davis, on Flickr

I cut the flange of the union down in the lathe to fit inside the aluminum can.
[Image: https://live.staticflickr.com/65535/49347704763_84a1901e1b_k.jpg]100_0281 by Steve Davis, on Flickr

A PVC "close" nipple was screwed into the flange. First the threads had to be re-tapped because the nipple is now screwed in from the opposite side than the hole was originally tapped.
 [Image: https://live.staticflickr.com/65535/49347740558_ce436024c2_k.jpg]100_0283 by Steve Davis, on Flickr

[Image: https://live.staticflickr.com/65535/49348405052_dbcca62167_k.jpg]100_0286 by Steve Davis, on Flickr
[Image: https://live.staticflickr.com/65535/49348192246_d13043081c_k.jpg]100_0287 by Steve Davis, on Flickr
[Image: https://live.staticflickr.com/65535/49348178081_4baa702a47_k.jpg]100_0298 by Steve Davis, on Flickr

I have not stuffed the cans yet, will do that as I need them, will probably use film caps.

Steve

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RE: Aluminum Filter Capacitors - Stall-U-Rated - 01-08-2020

Now THATS incredible.. And INGENIOUS!!  

Steve

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RE: Aluminum Filter Capacitors - rfeenstra - 01-08-2020

Love it! I have a 39-7 missing the 2 caps. Now I know what to do next time I take it apart to clean the push button contacts.

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RE: Aluminum Filter Capacitors - EdHolland - 01-08-2020

Very ingenious - I like that approach very much

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RE: Aluminum Filter Capacitors - David - 01-08-2020

WOW nice work!!!!!

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