Check out the Interesting Telephone System Power Supply

RE: Check out the Interesting Telephone System Power Supply

Jan Cumps — Fri, 07 Sep 2018 19:32:47 GMT

I thought there was not enough heatsink for a linear supply with that power. But the sinks are on the bottom.

Loads of energy must have been burned away in that monster...

RE: Check out the Interesting Telephone System Power Supply

DAB — Fri, 07 Sep 2018 18:22:14 GMT

Now that is a power supply.

If nothing else it is worth a lot of money just to recycle the copper in the transformer.

DAB

RE: Check out the Interesting Telephone System Power Supply

mcb1 — Fri, 07 Sep 2018 16:16:25 GMT

Given the date of the supply, the PABX phone system of it's time would have been rather large as well, so the weight isn't an issue.

While SMPS were around, I would think that for long term 24/7 operation you're starting to get into a few years before the passives start aging.

I would also imagine that many of the companies building these beasts were set in there ways, but now the trend is to assemble from sourced parts so they go with what is more cost effective.

I like linear supplies ... they don't go bang. [View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-decb189e-a4ef-401e-b5e0-a4b57996f0d1/contentimage_5F00_938.png:16:16]

Mark

RE: Check out the Interesting Telephone System Power Supply

fmilburn — Fri, 07 Sep 2018 04:39:27 GMT

What a monster [View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-decb189e-a4ef-401e-b5e0-a4b57996f0d1/contentimage_5F00_1.png:16:16]

RE: Check out the Interesting Telephone System Power Supply

shabaz — Fri, 07 Sep 2018 04:35:54 GMT

Hi John!

It looks really nice : ) It could be sold as an audio supply for those who want no switch mode noise maybe. The +-24V outputs could be handy for that!

I was wondering, did you clean it, or was it already in this condition? It looks spotless, like it has never been used.