Venner Electronics Modules
ard at p850ug1.demon.co.uk
Tue May 27 16:25:15 CDT 2008
> I've got here some electronic modules made by Venner Electronics LTD,
> Kingston By-Pass, New Malden, Surrey. One is a Transistor Decade Unit
AFAIK the company is no longer there, the road is (and is better known as
the A3). Not that that helps you much.
> type TS.10/5 and the other just has Type TS 11/HF on it, where 11/HF is
> scratched into the metal label.
> Opening one reveals a number of Mullard OC44 Ge transistors.
A well-known germanium RF transistor....
> What on earth are they for? I can imagine they're for some sort of
> digital machine or even a whole computer, but I can't find any
> information about them or the company.
Venner are farily well-known for control and measuremnt devices. Venner
timeswitches, for example, were widely used for street lamp control .
My guess is that these modules, in particular the decade counter, were
used in some kind fo DVM/frequency counter 
 They had an amzing (if OT) think called a 'solar dial'. Not much
thicker than a normal timeswithc dial, this thing had a star wheel that
was flipped on one position by a pin on the timeswitch chassis once per
revolution (day). there was a gear train built into the dial that caused
a sleeve around the cetnral spindle to rotate once per year, and a pair
of cams that moved the on and off levers so as to correct for the sunrise
and sunset times. When used for streetlamp control you got lights that
turned on and off at the right time.
 Such things were around before transistors. Somewhere I have a
_valved_ DVM , and HP made a valved frequency counter. I've got an
article somwehre for a 10 it successive-approximation ADC, punching the
output as 2 rows of 5 level paper tape, built from relays and a
uniselector. The comparator is one of those sensitive moving-coil relays,
 It was given to my school (the worst thing to do to any piece of
historic equipment IMHO). It didn't work, the teachers couldn't see the
point of it, and alas before I got to hear of it, some idiot had started
raiding it for the precision resistors. I realised what it was before too
much damage had been done, and managed ot get them to give it to me. But
it's going to be a lot of work to get going again.
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