[Test-Equipment] HP 10554 Oven

[Bill Riches]

Thanks Pete,

Nice job on your fx standard.

73,

Bill

-----Original Message-----
From: test-equipment-bounces at mailman.qth.net
[mailto:test-equipment-bounces at mailman.qth.net] On Behalf Of Glenn Little
WB4UIV
Sent: Saturday, February 27, 2010 1:52 PM
To: Discussion of Electronic Test Equipment
Subject: Re: [Test-Equipment] HP 10554 Oven

This is what I could find:

73
Glenn
WB4UIV

At 12:28 PM 2/27/2010, you wrote:
>Hi Pete,
>
>Part numbers are for a HP 10554A oven controller.  Numbers on schematic are
>as follows:
>
>Q1- 4-23      1854-0023  NPN 360mw TO-18
>Q2 - 4-560    1854-0560  MPSA12
>Q3- 5-10      1855-0010  2N2646
>Q4 - 3-347    1853-0347  MJE700
>
>Just wondering if you put 185 in front of these numbers do real part
numbers
>appear? Any help will be appreciated.
>
>
>
>Bill,
>
>   What HP part numbers do you have?  There are HP cross reference lists
out
>there, like at work which I won't be at until next Monday.
>
>   I build a nice freq std using that oscillator a few years back.  See it
at
>
>http://www.qsl.net/kh6grt/page4/freqstd/freqstd.htm
>
>
>
>pete
>
>
>
> > From: bill.riches at verizon.net
> > To: test-equipment at mailman.qth.net
> > Date: Fri, 26 Feb 2010 20:17:17 -0500
> > CC: bill.riches at verizon.net
> > Subject: [Test-Equipment] HP 10554 Oven
> >
> > I am working on the oven controller assembly that will not heat up. I do
> > have the schematic for it but wonder if anyone has transistor and IC
part
> > numbers for this board. Looks like hp numbers on the devices.
> >
> >
> >
> > Any info would be appreciated.
> >
> >
> >
> > 73,
> >
> >
> >
> > Bill, WA2DVU
> >
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