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Old 18th Aug 2016, 5:35 pm   #3
dagskarlsen
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Join Date: Jan 2008
Location: Hakadal, Norway
Posts: 640
Default Re: Candlestick 150 problems

As usual Dave is 100% right, but you have a nice bell, and a nice phone, it is several ways around the problem of DC trough the receiver, and even to get better impedance matching.
For me living outside UK the adaptions usually goes from UK to Norwegian systems. The process is known. Since this phone is an ASTIC it is only 3 wires from the phone to the subset. To make it extremely simple, but working you could look at this picture: http://www.bayern-online.com/Ebook/3...s/fig314_t.png (look at the part of the circuit named Station A)

The capacitor will be OK from 1-5 microFarad, the coil shoud hav many windings, and resistance less than 100 ohms. Typical 24 car light relay, you just have to test whatever you have. In worst case a 220 ohms resistor may do the job.

dsk
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