Arduino Forum
General interfacing advice using optocouplers
Using Arduino
General Electronics
Zapro
January 6, 2013, 1:43am
2
So that's 13V -1,25V = 11,75 / 0,03 = 391
So yes, 390 Ohms are perfect
// Per.
show post in topic
Related Topics
Topic
Replies
Views
Activity
Home Alarm - please check my diagrams
General Electronics
22
9154
May 6, 2021
Designing optocoupler circuit for arduino input
General Electronics
16
36750
May 6, 2021
Triggering digital pin from separate circuit
Interfacing
11
7061
May 6, 2021
a few question on how to connect a relay
Interfacing
2
969
May 6, 2021
Connecting Arduino to Honeywell Galaxy alarm outputs
General Electronics
4
1948
May 6, 2021