Hi,
The green one will be OK - when you disconnect D1 and the red LED.
When the fuse blows, all the voltage will be across the fuse. Thus you could connect the red LED with series resistor across the fuse.
Klaus
Hi,
"for fun"? That's quirky for a protection circuit... An input device circuit (if a pushbutton is not fun enough) flipping a flipflop which is controlling a Mosfet gate. Fun could be eye or facial recognition, a fingerprint scanner, ...whatever one may dream of but a pushbutton for test purposes, or flip flop + mosfet, is far simpler and keeps component count down and PCB size less large.
learning something new is fun..
Hi,
Let's go by stages, please.
I suspect it may take some time to come up with a suitable solution as I have a lot on my plate at the moment and I'm no expert, to say the least. Glad to help if I can. I'll re-read your last post later today, when I have more free time.
A)Fuse is a glass fuse yes...
B)
1-Power is initially turned on.. No fuse installed yet.. Load is attached = No LED at all (red or green) on.. (Stage 1- Lets call it Standby State)
2-Power is on... Fuse installed (for longer than delay or whatever)... Load attached = Green LED on (Stage 2 - Lets call it Good State)
3-Power is on.. Fuse blown or removed... Load attached = Red LED on (Stage 3 - Lets call it Fail State)
C)
Now I'd like to be able to temporarily use a good fuse to toggle from the Stage 3 state back to the Stage 1 state but not need to leave the fuse installed.. (maybe just need to insert it for less than 5 seconds or whatever to toggle from stage 3 to stage 1)
There are basically times when I want to leave the fuse out or remove the fuse and not have the RED LED energized...
And I'd like to somehow use a fuse to clear that alarm but have the ability to keep the fuse out so that the load is not energized..
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