LED Blown AC Fuse Indicator Circuit Diagram

LED Blown AC Fuse Indicator Circuit




LED Blown AC Fuse Indicator Circuit Diagram

This circuit monitors a AC fuse. In this circuit, the LED indicator shows whether or not the fuse is blown.

LED Blown AC Fuse Indicator Circuit Diagram

PARTS LIST
R1 1MΩ
R2 100Ω
R3 1kΩ
C1 0.47µF 250V
C2 0.47µF 250V
D1 2.7V 0.5W Zener Diode
D2 5.6V 0.5W Zener Diode
D3 LED
Q1 BC547
F1 FUSE

This  fuse indicator circuit makes an LED light up if a fuse blows, this gives a quick indication if the fuse has blown and the LED can be sited on the front or rear panel saving time when fault finding.

This blown fuse indicator will work with a wide range of AC supply voltages from 30V to 300V and good for use with few milliampere to many amperes fuse.

Don’t touch any component, when circuit is connected to the AC power.

LED Blown AC Fuse Monitor Circuit LED Blown AC Fuse Indicator Circuit




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4 comments on “LED Blown AC Fuse Indicator Circuit Diagram
  1. livelybrowsers says:

    Thanks for good stuff

  2. Mike Amaral says:

    Nice, simple, useful circuit.
    Please elaborate on the purpose of R1. It appears circuit would work OK without it. Might add protection of LED and/or transistor from voltage spikes or transients?

  3. R.CHINNASAMY says:

    Sir, I need 120v/dc fuse failure indication circuit with components details.

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