Author Topic: Elektrisk Bureau PAX SXS with drums  (Read 5630 times)

Offline dsk

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Re: Elektrisk Bureau PAX SXS with drums
« Reply #15 on: March 23, 2015, 04:02:19 AM »
This design are from approx wwi but it works, and are just implemented as my home telephone system. The outbound calling are still a problem, and does only work on the shortest lines. My son noticed at once the different ringing, 25Hz vs 20Hz :-)

dsk

I have even got a regular New York number :-) 646 570 1796

Offline dsk

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Re: Elektrisk Bureau PAX SXS with drums
« Reply #16 on: March 23, 2015, 01:19:19 PM »
The ringing tone are depending on the ringer current, my "modern" phones with more than 1000 ohms ringers does not draw enough current.  That is a problem I never have considered as a possible problem!

dsk

I have even got a regular New York number :-) 646 570 1796

Offline dsk

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Re: Elektrisk Bureau PAX SXS with drums
« Reply #17 on: December 12, 2015, 09:38:24 AM »
How does the ring look?
Tried to catch some data via the PC sound card and the Visual analyzer (freeware), and here is the ring, generated by a vibrator, the cadence is controlled by a relay and capacitor:
dsk

I have even got a regular New York number :-) 646 570 1796

Offline dsk

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Re: Elektrisk Bureau PAX SXS with drums
« Reply #18 on: November 12, 2018, 02:40:35 AM »
I had to give up my inward trunk.
 :(


dsk ;)

I have even got a regular New York number :-) 646 570 1796