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Old 6th Oct 2019, 4:46 pm   #8
dagskarlsen
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Join Date: Jan 2008
Location: Hakadal, Norway
Posts: 567
Default Re: Boost the ringer current instead of ...

Quote:
Originally Posted by dagskarlsen View Post
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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