[Milsurplus] PP-327B Power supply

[Matt P]

Ray,

What make/model capacitor tester are you using?

Matt


>
> Message: 1
> Date: Thu, 21 Nov 2024 08:43:44 -0600
> From: Matt P <mgpaulonis at gmail.com>
> To: Milsurplus <milsurplus at mailman.qth.net>
> Subject: Re: [Milsurplus] Milsurplus Digest, Vol 247, Issue 43
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> Ray,
> I see you are using a PP-327(A or B?). I just acquired a "B" unit of
> unknown provenance that had the power cord cut off, but nearly pristine on
> the inside with the exception of seeing the blower motor disconnected. When
> you acquired your power supply, did you completelyre-cap before applying
> power? I see the warning in the manual to never power up without a load (or
> radio) attached; but want to get some insight into what to expect before
> applying power.
> 73,
> Matt
> W2NS
>
> Message: 2
> Date: Thu, 21 Nov 2024 15:37:51 +0000
> From: Ray Fantini <RAFANTINI at salisbury.edu>
> To: List Milsurplus <milsurplus at mailman.qth.net>
> Subject: [Milsurplus] PP-327B Power supply
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> The PP-327B is on loan for this project, the story I was told is that it
> was NOS and never used and is very clean. Because it appears to have never
> been used, I did check all the DC to ground resistances and also connected
> a external power supply set to 3.0 volts with current limiting to the Low
> voltage - filament bus. That's the junction of L3, L4 and C7 and let that
> cook for a day to reform the three huge capacitors (C6, C7 and C8) and then
> did HV checks with an external capacitor tester, a real capacitor bridge
> and not some little POS digital tester and ran them up to working voltage
> to check C1, C2 @650 volts and C3A and B @200 volts.
> Think after that it's all ready to go. Have to say the PP-327B is uptown
> with its B+ regulation and clean design. Like that box way better than the
> stock 327
> If you don't have it download TM-11-5070/ TO-31R2-2GRC-9-21 from Radionerds
>
>
> Ray F/KA3EKH
>
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