[time-nuts] 5065A - Looking for AC XFMR PAECO 9100-2742 specification

Poul-Henning Kamp phk at phk.freebsd.dk
Thu Jul 27 15:58:45 EDT 2017

In message <675538475.428966.1501176257165 at mail.yahoo.com>, Ulf Kylenfall via t
ime-nuts writes:

>Removing that board I discovered that the "24-32V" raw DC was some
>40 Volts.

That's a bit on the high side, but not excessively so.

HP tended to let the linear regulators shave a big slice in
precision instruments, probably to make sure that absolutely
no ripple makes it through.

If I were you, I would ditch the transformer entirely, and go with
an external DC PSU and put a high-quality DC/DC converter in the



Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.

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