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Old 19th Jan 2011, 10:18 am   #9
russell_w_b's Avatar
Join Date: Jul 2007
Location: Penrith, Cumbria, UK.
Posts: 3,198
Default Re: 232L bakelite telephone and No 26 Bellset

Originally Posted by frglee21 View Post
I think acoustic shock usually occurs when you operate the dial...
Using clipping diodes for limiting dialling pulses in the receiver is a bit of a 'sticking-plaster' solution. If you are hearing loud clicks when dialling, then your 'dial-off normal' contacts need cleaning! These contacts are configured to shunt the receiver and/or to quench any sparks produced by the dial contacts, giving rise to induced clicks.

Deal with these issues first before slapping in a couple of diodes.

Russell W. B.
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