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Old 18th Mar 2017, 9:29 am   #26
JohnBHanson
Heptode
 
Join Date: Aug 2009
Location: Worthing, Sussex, UK.
Posts: 661
Default Re: GPO Jack unit 1B

If you need a ringer connect between blue and white of line cord. (Add a 3.3kOhm resistor in series if you are using a 500Ohm bell. (This is normally marked on the coils).
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