Re: Vintage Arrow ( Toy? ) Telephones
Thank you all, I have it working. I think with the circuit below. I haven't checked whether the earpiece and mouthpiece are in series or parallel.
Despite it being very basic it took quite some time to sort out a collection of minor faults. The handset/gravity switch was mechanically sticky on one, on both it was high resistance on the buzzer side ( back emf from the coil ? ). One buzzer contact was open circuit ( or very high resistance ) when it should have been closed and the brass spring loaded connectors were very tarnished, cleaning them lowered the resistance there.
Voice quality is pretty poor but it is only a toy and it may improve when I get the correct batteries fitted.
Thanks again Dave
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