Posted by Alex on January 02, 2021 at 13:23:56 user Alex.
In Reply to: Re: Beckfoot Plumbing posted by Jon on January 02, 2021 at 06:32:13:
The house telephone would have had two very large 1-1/2 volt batteries and the voltage on the telephone line would have been 50 volts, supplied from the exchange. The phone's batteries to give out dialling pulses. These, when changed by the P&T (or who ever was in charge), meant that as a kid, a voltage supply was available to play with. Make bells and relays etc. and eventually in later life become involved in electronics.
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