Explore BrainMass
Share

BI-DIRECTIONAL OPTO COUPLER- PLCS

This content was STOLEN from BrainMass.com - View the original, and get the solution, here!

(c) The diagram of FIGURE 2 shows a bi-directional opto coupler input interface circuit. When a supply voltage of 20 V is applied the LED
carries a current and 2 V is dropped across it. Calculate the value of the LED current and the value of current through the 3 k? resistance.
FIG. 2

Please refer to the attachment.

© BrainMass Inc. brainmass.com September 25, 2018, 4:57 pm ad1c9bdddf - https://brainmass.com/engineering/electrical-engineering/bi-directional-opto-coupler-plcs-495192

Attachments

Solution Summary

The solution contains the complete steps to arrive at the answer.

$2.19