This device generates the ring signal of the Swedish telephone network.
The device uses relatively high voltages.



A Measuring Circuit of Ring Generator 76 V, from the year 2007


 A Measuring Circuit of Ring Generator 76 V, from the year 2007, 2


 A Measuring Circuit of Ring Generator 76 V, from the year 2007, 3


 A Measuring Circuit of Ring Generator 76 V, from the year 2007, 4


T:  picture 1, top

RING GENERATOR 76 V


You're using this device to simulate a phone line of the Swedish telephone network.
The device is able to test telephone sets and also other ring signal circuits.

The output of device can simulate five different states:

State Output Signal
A free phone line DC 50 volts
A free phone line with a ring signal DC 50 volts + AC 76 volts (intermittent)
A free phone line with a continous ring signal DC 50 volts + AC 76 volts (doesn't exist)
A busy phone line, measuring point before phone DC 5 volts
A busy phone line, measuring point after phone DC 0 volts

Ring Generator 76 V, Page 2
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