Telegraph Sounder Driver.  This board takes a logic input and drives up to 10A (momentary) via an N Channel FET.  Internal clamp diode provided.  The Sounder Driver was designed to drive low resistance (< 24 ohm) telegraph sounder coils with our Morse Code Buzzer Controller, but it can be used to drive any high current load.  A logic low input yields a ground on the output.

Design files coming soon

Check the Morse Code Buzzer Controller for application notes, coming soon

We maintain a small stock of authentic Telegraph Sounders, contact us if you need one!