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, "tim...@timeok.it" 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" time-nuts-boun...@lists.febo.com
> A time-nuts@lists.febo.com
> 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.
>
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