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A half-moon switch is a type of electronic toggle switch. It is commonly used in electronic instruments, mainly in adjusting the Chorale and tremolo in a Leslie speaker.

Function

In a Leslie speaker, the function of the switch is to control the speed of the oscillating horn, thus controlling frequency of the vibrato. It ranges from slowest (labelled chorale) to fastest (labelled tremolo). There is often an off position in between the two settings, depending on the switch.

References

1. "Switches | Hammond USA".

v t e Switch types
Analogue switch Banyan switch Battery isolator Cam switch Centrifugal switch Company switch Contact protection Crossbar switch Crossover switch Cryotron DIP switch Dry contact Electric switchboard Float switch Half-moon switch Humidistat Infinite switch Inertial switch Kill switch Key switch Knife switch Limit switch Latching switch Light switch Lightning switch Magnetic proximity fuze Magnetic starter Magnetic switch Mercury switch Miniature snap-action switch Motion-triggered contact insufficiency Optical switch Photoswitch Piezo switch Placebo button Pull switch Push switch Push-button Railroad switch Reed switch Rotary switch Sail switch Sea switch Sense switch Silicone rubber keypad Softswitch Spark gap Staircase timer Stepping switch Strowger switch Thermostat Time switch Touch switch Transfer switch Vacuum switch Vandal-resistant switch Wireless light switch Zero speed switch

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