28 Jun
2012
28 Jun
'12
1:11 p.m.
Hi all,
Do you guys know of a failsafe way to check if a Teletype is for 110
or 220V? I've bought one which has a power connector which seems like
US mains. The motor is 50Hz, but I guess that won't make a difference.
Any quick way to check without completely dismantling the machine?
Every ASR33 I've seen (and I am in the UK) has had a 110V motor. The
'call control unit' in a Teletype modelk 33 was designed for 110V mains
too. The UK modles genrally had a 240V-110V (or 230V-115V, or whatever)
autotransformer in the stand.
There was a UK machine called a Data Dynamics 390. It used ASR33
mechancials with their own call cotnrol unit. This ran off 240V mains,
but the motor was still 110V. The mains transformer in the call control
unit provided the motor supply.
So I think it's a safe bet to assuem your machine is for 110V mains.
-tony