[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
HP5065A
See:
http://phk.freebsd.dk/hacks/HP5065A/20150930_dcdc/index.html
--
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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