Electronic Fuse for DC Short Circuit Protection


Posted on Feb 5, 2014

This circuit will protect your power supply or battery. The electric current will stopped by relay when electric current short occured, Relays must be chosen with a voltage value equals to the input voltage. Don`t omit using the 100uF capacitor with appropriate voltage value with respect to the input voltage. If you can`t provide, you can use C106


Electronic Fuse for DC Short Circuit Protection
Click here to download the full size of the above Circuit.

instead of BRX46. You can adjust the current with using 10K potentiometer. If you will use the fuse with very high currents, lower the 0R6 5W resistor value (ex. 0R47, 0R33, 0R22 or 0R1). Watt value of the resistor should be increased also.




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