27 May
2008
27 May
'08
3:52 p.m.
Alexis wrote:
Hi,
I've got here some electronic modules made by Venner Electronics LTD,
Kingston By-Pass, New Malden, Surrey. One is a Transistor Decade Unit
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.
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.
I have a Venner TSA 3336 counter that uses those modules, as well as the
leaflet-style manuals for the various modules.
Pictures and description of the counter and modules are at:
http://www.cs.ubc.ca/~hilpert/e/edte/VennerTSA3336/index.html
The novel thing about the counter is it uses meter-projection displays
(horribly finicky things).
The counter modules are typical 4 flip-flop decade counters, including 4
resistors in a simple D-A arrangement to drive the meter-projection displays.
According to the leaflets the 10/5 is a decade counter good to 30KHz, the 11/HF
is a decade 'selector' (same but has all outputs brought out to a connector),
good to 1MHz.