I am trying to design an LED voltage indicator using a LM339 Quad voltage comparator.
There will be 4 LED's(General Purpose), Yellow, Green, Red, and multi-color flashing. The voltage range would be two leveled in that there could be two ranges possible. The first range would be 22V - 27V, the second would be 22V - 34V. The second range would be implemented infrequently.
With that said I wish to accomplish the following:
Turbo LED - Yellow: 28.0V and higher
Good LED - Green: 26.0V - 27.9V
Low LED - Red: 24.1V - 25.9V
Charge LED - Flasher: up to 24V
I thought the attachment, below would be a good reference although I'm not sure I want to connect the LED's to the source. I think I'd Isolate them and use 5V.
Any ideas on how I would tweak this circuit...resistor values...etc.??
There will be 4 LED's(General Purpose), Yellow, Green, Red, and multi-color flashing. The voltage range would be two leveled in that there could be two ranges possible. The first range would be 22V - 27V, the second would be 22V - 34V. The second range would be implemented infrequently.
With that said I wish to accomplish the following:
Turbo LED - Yellow: 28.0V and higher
Good LED - Green: 26.0V - 27.9V
Low LED - Red: 24.1V - 25.9V
Charge LED - Flasher: up to 24V
I thought the attachment, below would be a good reference although I'm not sure I want to connect the LED's to the source. I think I'd Isolate them and use 5V.
Any ideas on how I would tweak this circuit...resistor values...etc.??
Attachments
-
7.6 KB Views: 449
Last edited: