Hi The board looks a lot like a pull from a Lucent base station. The voltages would all make sense in that context. The unit swaps in for an LPRO and the 15V would be easy enough to come up with. I'd bet they ran both pins off of +24 though.
Bob On Mar 19, 2011, at 5:20 PM, Arthur Dent wrote: > "Can anybody confirm the supply voltages for the Efratom 105243..." > > The pinout shown is close. The oscillator supply voltage on the > one I have in circuit is +15 @ low current. The Oven requires > 24VDC @ .25A and this drops to under 100ma when the unit > reaches operating temperature. There apparently is an internal > regulator on the oscillator supply and if you watch the output > level as you increase the oscillator supply voltage you will see > it increase until you hit about 13.5VDC then it remains constant. > This may mean that you could run the oscillator on either 15 or > 24 volts but where I'm only guessing what's inside the case I'd > stick with 15VDC to play it safe. The pin next to the output that > goes through the on board diode is apparently an oven o.k. signal > that drops from 5VDC (cold) to around .8 when the oven reaches > operating temperature in around 3 minutes. This probably could > go to the base of a transistor with or gate input if you want to > use it to drive an LED. 0-5DVC on the EFC pin changes the output > by about 28Hz > > -Arthur > > > > _______________________________________________ > 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.
