[GreenKeys] Idle Line Motor Control PC Board

Jack wa2hwj at att.net
Fri Sep 14 20:51:02 EDT 2012


ZCZC

 

I have had a Printed Circuit board professionally made up that
contains the circuitry

for a "TTY Idle Line Motor Control". The circuit is inserted into

the TTY loop, monitors signal activity and controls the TTY's motor.
If the line is idle

for a predetermined amount of time, a relay is opened, shutting

off the TTY motor. As soon as a signal ("traffic") is sensed, it

turns the motor on. The timing interval is determined by a
user-selected capacitor

and resistor on the board.

 

The PC board is made of high quality fiberglass, is double sided,

and is tinned. The dimensions are 2.5" x 2.75".

The board comes with a schematic, list of required parts, 

and a parts placement diagram. The parts can be obtained from

Mouser, Jameco, Digikey, etc.  The board requires 12VDC

for operation. You should have moderate soldering skills

to build this unit.

 

I am offering these boards for $20.00 shipped. Believe me,

I'm not making any money on this!

 

Soon to come, a PC board that contains a complete, bi-directional

RS232-to-TTY loop converter circuit.

 

I have 4 boards available. First come, first served.

 

TO BE PERFECTLY CLEAR...THIS OFFER IS FOR THE PC

BOARD ONLY. YOU HAVE TO ACQUIRE THE PARTS,

BUILD IT AND INSTALL IT INTO A SUITABLE ENCLOSURE.

THIS WILL REQUIRE WIRING UP AN AC OUTLET TO

CONTROL THE TTY MOTOR. BE CAREFUL!!   I CANNOT

BE HELD RESPONSIBLE FOR ELECTROCUTIONS.

 

73,

 

Jack K0TTY

 

NNNN

 

 

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