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 <[email protected]> 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 < > [email protected]> > To: Discussion of precise time and frequency measurement < > [email protected]> > 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 -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
