Aanwinst: Marconi nixie DVM (Algemeen)

door Maurice , Dordrecht, 29-11-2022, 22:30 (1067 dagen geleden) @ Onno-I

Tja exotische AC plug dus.

Andere DIN 5 plug blijkt een DC voeding te zijn, als 2e mogelijkheid.

Inderdaad dus wel degelijk ook 230Vac.

Ik vond deze info:
Marconi TF 2671
http://www.mcamafia.de/nixie/nixiegear/nixiegear.htm#05

The first on top was sold on Ebay as defective and with no matching power cord.
It is a Marconi Instruments Ltd. (UK) 'Digital Multimeter TF 2671', Serial Number 1928.
When it came here it has another 3-pin connector at the rear, a round one this time,
to which nothing really fit. Has been replaced with a fixed,
non-detachable cable so far. It runs on 230V AC and 11 - 18V DC battery power.

AC / DC and power switches are at the rear as well as
the 5-pin DIN socket for the DC supply.

The unit suffered on some bad caps, a lot of dirt inside and a shot anode switch
transistor, which has been replaced by a MPS-A42.

Unit works now, may need some calibration and Nixie on LSB comes on a bit late.

The display is 3 1/2 digits (3 x ST-5870 / ZM1332K style tubes) with a long neon
for the first digit, two neon bulbs show the "+" and "-" signs in a masked display
front.
Ranges are 0.2 / 2 / 20 / 200 / 2000 V, mA and KOhm (up to 1000 V AC or DC only).
The 1 KV uses an extra input terminal.