[GreenKeys] Teletype REC11 Rectifier "is NOT suitable for use in the signaling ... circuits of Teletype apparartus"

[Paul Birkel]

Regarding the Specification of the REC-11 Rectifier, as included in
http://www.virhistory.com/navy/manuals/tty/9M-index-4506.pdf, page 38 of 45,
the description states:

 

"The REC11 rectifier is designed to deliver continuously 0.6 ampere at 120
volts D.C. from 105 to 125 volt 50-60 cycle A.C. single phase power supply.
The direct current from this rectifier is suitable for operation of Teletype
perforator punch magnets but is NOT suitable for use in the signaling or
local relay and selector magnet circuits of Teletype apparatus.

 

This rectifier consists of an insulated type input transformer with variable
secondary taps, a full wave selenium rectifying element, a power factor
correction condenser, a filter consisting of a choke and a condenser, and a
bleeder resistor. All parts are secured to a metal base which has feet for
shelf mounting. The rectifier is furnished complete with cover, cords, and
plugs for making A.C. and D.C. connections."

 

The schematic and other information regarding the REC11 Rectifier follow on
subsequent pages.

 

Why is this power supply suitable for use with perforator punch magnets, but
not the other types of circuits?  Inquiring minds .

 

Thanks,

paul

 

 

 

 

 

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