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From: faunt@spar.SPAR.SLB.COM (Doug Faunt)
Newsgroups: sci.electronics
Subject: Re: Those magic eyes
Message-ID: <180@spar.SPAR.SLB.COM>
Date: Wed, 22-Jul-87 15:14:08 EDT
Article-I.D.: spar.180
Posted: Wed Jul 22 15:14:08 1987
Date-Received: Fri, 24-Jul-87 06:09:58 EDT
References: <1002@me.ri.cmu.edu> <1861@kitty.UUCP>
Reply-To: faunt@spar.UUCP (Doug Faunt)
Organization: Schlumberger Palo Alto Research - CASLAB
Lines: 30

In article <1861@kitty.UUCP> larry@kitty.UUCP (Larry Lippman) writes:
>	As far as I know, the 1629 is electrically identical to the 6E5,
>but is an industrial/military equivalent in an octal base (the 6E5 is a
>6-pin base).  While I don't have the exact electrical specs for the 1629
>handy, I do have the pin-out data from a tube tester reference manual
>(don't laugh - we still have a tube tester buried in a storeroom!):
>
>	Plate = pin 2
>	Grid = pin 5
>	Cathode = pin 8
>	Target anode = pin 4
>	Filament = pins 2 and 7
>	Pin 1 has no connection, and pin 6 is physically missing
>
>> Any suggestions are greatly appreciated (especially about
>> possible low-cost power supplies).
>
><>  Larry Lippman @ Recognition Research Corp., Clarence, New York
><>  UUCP:  {allegra|ames|boulder|decvax|rocksanne|watmath}!sunybcs!kitty!larry
><>  VOICE: 716/688-1231        {hplabs|ihnp4|mtune|seismo|utzoo}!/
><>  FAX:   716/741-9635 {G1,G2,G3 modes}    "Have you hugged your cat today?" 

Larry, can you check your tube checker reference for verification of this?
As I remember it, the 1629 has a 12V filament winding.

The old ARC-5 transmitters used a pair of 1625's for the PA, a 1626
for the ECO, and a 1629 for a tuning indicator (ECO calibration check
with the crystal?) arranged  with the filaments of the 1625's in series,
and the filaments of the 1626 and 1629 in series, for running off the
24V input.  The HV was generated by a dynamotor.