Quote:
Originally Posted by BakeliteBear
Can anyone recommend a current source for a REN booster?
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The BT REN booster I have (not used currently) isn't actually a ringing generator, but reinforces the ringing signal outgoing from the booster by detecting it and triggering a +VE or -VE pulse to coincide with the incoming +VE and -VE ringing waveform.
The reinforced ringing current is derived from a mains-powered PSU inside the booster unit.
In other words, it takes the application of a ringing voltage input from the line to create a reinforced (lower-impedance) ringing supply to one's telephones. Maybe other REN boosters work differently?