Open and close the power of opto-isolator

Thread Starter

terrylai

Joined Oct 11, 2022
7
Hello all,

I have a project needing to isolate the power of a zone.
I use both opto-isolator and power-isolator to achieve this.
But the device is a batter operated device, to save power, I need to open and close the power of opto-isolator periodically.
How to send a signal by MCU to this isolated zone to shutdown the power?

BR,
Terry
 

DickCappels

Joined Aug 21, 2008
9,520
Can. you supply a little more detail?
What power-isolator are you using?
What opto-isolator are you using?
Can you provide a sketch of your circuit?
 

crutschow

Joined Mar 14, 2008
31,138
I need to open and close the power of opto-isolator periodically.
It you use the output of the opto isolator being open (unenergized) as causing the control circuit to be unpowered then it will use no power in that state.
The energized or closed state of the opto output can then turn on the circuit.
 
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