Luciano, References of the manual is the following: MANUAL PART NUMBER 10811-90002 Microfiche Part Number 10811-90003 Dated August 1980.
Thanks very much for your reply (indeed npn and Q6...!) Looking for a replacement for UA208 (obsolete) hard to find, as well as LM208 => would NTE928 or ECG928 be ok ? Best, Gilles. Envoyé de mon iPad > Le 10 sept. 2019 à 20:29, "[email protected]" <[email protected]> a écrit : > > > Gilles, > > what manual you refer? (Part number) > > Heating transistor are NPN.TO220 similar to TIP120 > > Driver is Q6 and NPN similar to 2N3904 > > U1 is LM2904N > > U3 is uA208M > > Luciano > > > Da "time-nuts" [email protected] > A [email protected] > Cc > Data Tue, 10 Sep 2019 17:54:17 +0200 > Oggetto [time-nuts] Hp10811 parts ref > Dear list, > Looking forward to apply the oven configuration of the 10811 oven > oscillator - that is working so well - could you please help me identifying > the appropriate references for the active parts : > Q7 and Q8 heating darligntons PNP > Q4 driving transistor PNP > U1 and U3 op amps > From the schematic on fig 8-15 on page 64 of the HP manual. > > Thx very much, > Gilles. > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
