Electronics > Beginners
HOW TO SENSE 12 VOLT DC VOLTAGE USING MICROCONTROLLER?
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wabhavkumar:
I WANT TO USE 12V OPERATING NO NC SENSOR WITH MICROCONTROLLER. PLEASE SHARE METHODS OF DOING THIS
Kjelt:
Your caps lock is stuck  ;)
Kjelt:
But to answer your question many possibilities, I use mainly:

1) voltage divider (two resistors) https://en.wikipedia.org/wiki/Voltage_divider
2) opto coupler

The first one I use with local (on pcb) voltages that are referenced to the same ground.
The second I use mainly with off pcb voltages from different devices.
Kjelt:

--- Quote from: GeorgeOfTheJungle on July 02, 2018, 11:43:58 am ---
--- Quote --- I WANT TO USE 12V OPERATING NO NC SENSOR WITH MICROCONTROLLER
--- End quote ---
*** Parse error.

--- End quote ---
Hahaha the topic text was more clear but rereading this it really does not compute  :-//
wabhavkumar:
thank you for the valuable reply. Please suggest optocoupler circuit.
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