[time-nuts] Hp10811 parts ref

[Club Internet]

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, "timeok at timeok.it" <timeok at 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-bounces at lists.febo.com
>   A time-nuts at 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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