Introduction: Transistor Instead of Relay for Car Horns
Instead of relays, you can use transistors for switching your car horns.
For my latest car horns for bicycles setup, I used an IRFZ44N N-channel MOSFET instead of a relay. MOSFETs use less current than relays and switch faster. So far, it seemed to work as well as relays. The pictures of my setup are in the next pages.
Step 1: Horn Setup
Step 2: Horns on Bicycle
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