I use a Heathkit IP-2718. It only goes to 500 mA on the +12 supply but when the TBolt is turned on, the current goes off scale for a few minutes, the voltage drops about a volt or half volt, but then all comes back on scale as the OCXO warms up.
I think I built one years ago but I found several of these on the 'e' site for only a few bucks. However, a power supply for the TBolt should be very easy to build. My ultimate plan was to buid a box that included 110 VAC and +12 VDC supply that would supply all three voltages. Should be fairly easy to do with a 555 as an oscillator to drive a voltage doubler to make the -12 VDC supply capable of low current. Joe -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Larry McDavid Sent: Thursday, February 10, 2011 5:46 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Thunderbolt Supply Certainly, I'd prefer a linear 3-output supply. But, I've not found a suitable one yet, in linear or switching. TAPR offered one in the past but has no more. So, I'm asking for recommendations and where to get one. Larry On 2/10/2011 3:32 PM, J. L. Trantham wrote: > I favor a linear regulated supply rather than a switching supply. I > had a TBolt die while connected to a switching supply in an > environment where there were frequent power outages. ... > -----Original Message----- > From: [email protected] [mailto:[email protected]]On > Behalf Of Larry McDavid ... > I'm seeking a recommendation for a power supply for this Thunderbolt > receiver. There is much discussion about noise from some switching > supplies and the effect on phase noise of the 10 MHz output. The > Thunderbolt manual specifies the following supply and loads: > > +12 vdc 750 mA > + 5 vdc 400 mA > -12 vdc 10 mA > > This combination is somewhat unusual in that the highest current is on > the 12 volt output rather than the 5 volt output. I'm asking if list > members have a favorite power supply for this unit, why and where I > can obtain one. ... -- Best wishes, Larry McDavid W6FUB Anaheim, CA (20 miles southeast of Los Angeles, near Disneyland) _______________________________________________ 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.
