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Boost the ringer current instead of ...
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6th Oct 2019, 5:46 pm
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dagskarlsen
Heptode
Join Date: Jan 2008
Location: Hakadal, Norway
Posts: 643
Re: Boost the ringer current instead of ...
Quote:
Originally Posted by
dagskarlsen
I have been working further on my circuit to just keep 2 wires.
http://www.classicrotaryphones.com/f...h=211423;image
dsk
Just tested today, and yes it works, the excchange can not monitor the REN load.
Drawbacks:
1) polarity sensitive, does not accept reverse polarity.
2) The ring current continiues until the relay release.
dsk
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