Mains blown fuse indicator alternative circuit

210

03:01:13

Switch represents mains fuse. Green LED indicates all is well. Red LED lights if fuse is blown. (No LED means circuit is faulty or switched off). IMPORTANT NOTE - ALWAYS REMOVE POWER FROM MAINS POWERED EQUIPMENT BEFORE INVESTIGATING A SUSPECTED FAULT CONDITION. 

published 9 years ago

Robert_Kidd

9 years ago

Lamp represents load.

lenzrulz

9 years ago

I would lower the resistance of the 47K resistor to 16K...otherwise well done 👍

Robert_Kidd

9 years ago

Yes, I would have seen what LED brightness was like in real life and changed it if required. Thanks for taking the time to comment. Appreciated.

lenzrulz

9 years ago

You are always welcome my friend...👍

giomix

9 years ago

How much watt for resistor? (6mA/1.41)^2x47kohm=200w ... using 16kohm = 67w

Robert_Kidd

9 years ago

As shown with 47k, peak power = (323*323)/47000=2.219W. Or 6.520W with the 16k resistor.

FernandoCPF

8 years ago

Las resistencias en kohms soportan mas amperaje al bloquearlo, en cambio con los de 720ohms a 1ohms no bloquean casi nada!!!.

Robert_Kidd

8 years ago

English?

brian_boris

8 years ago

[BLOCKED]

kiani

6 years ago

[BLOCKED]

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