[time-nuts] Anyone (ideally in the UK) got a spare rotary knob for the 5370B TI counter?

Jim Harman j99harman at gmail.com
Sat Dec 31 03:15:47 UTC 2016


You could try hooking up a transformer with a 20V secondary as an
autotransformer to reduce the line voltage.

On Fri, Dec 30, 2016, 9:09 PM Bob Stewart <bob at evoria.net> wrote:

> If you can touch the heat sink for 2 seconds, you're made of sterner stuff
> than I am!  They run very hot.  It's a good idea to get a GPIB extender so
> your GPIB cable can clear the heat sink.  Somebody, can't remember who,
> worked up a nice looking conversion to a pair of switching supplies.  I
> bought a couple of the supplies from ebay, but that project hasn't shuffled
> to the top of the list, yet.  Maybe the next time I forget and reach back
> there and get burned...
>
> Bob
>
>
>
>       From: Dr. David Kirkby - Kirkby Microwave Ltd <
> drkirkby at kirkbymicrowave.co.uk>
>  To: Discussion of precise time and frequency measurement <
> time-nuts at febo.com>
>  Sent: Friday, December 30, 2016 5:58 PM
>  Subject: [time-nuts] Anyone (ideally in the UK) got a spare rotary knob
> for the 5370B TI counter?
>
> I bought a 5370B TI counter which arrived today. It needs a bit of TLC, but
> nothing too bad. But one of the rotary knobs is incomplete. Does anyone
> have a
> spare knob? Contact me off list if you do.
>
> I had one of these things about 10 years ago. I have forgotten how to
> drive it.
>
> It is running very warm. I can hold my fingers on the heatsink for only a
> couple
> of seconds - not a very scientific test I must admit.
>
> Obviously the mains voltage varies a bit, but it is usually well over the
> 230
> VAC we are supposed to be. I just measured it at 248 VAC. Unfortunately I'm
> right on top of the 11 kV transformer, so other properties around me
> probably
> get poorer voltage regulation, but a few less volts.
>
>
> Dave
>
>
> --
> Dr. David Kirkby Ph.D CEng MIET
> Kirkby Microwave Ltd
> Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, Essex, CM3
> 6DT, UK.
> Registered in England and Wales, company number 08914892.
> http://www.kirkbymicrowave.co.uk/
> Tel: 07910 441670 / +44 7910 441670 (0900 to 2100 GMT only please)
>
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
>
>
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
>



More information about the Time-nuts_lists.febo.com mailing list