Opto Isolated Relay Schematic. This article shows how to control mains voltage with the arduino using a relay module. We make a brief introduction to the relay.
Web this is a 8 channel relay interface board using uln2803. Web description a very simple dual channel optical isolated relay module. The input can be driven from 3.3v or 5v sources.
Web description a very simple dual channel optical isolated relay module. Design the power stage components. This article shows how to control mains voltage with the arduino using a relay module.
Web note that relays provide electrical isolation between the control circuit (which operates the coil) and the load (switched by the contacts). Web the difference can be seen from the name: Web isolated converters can be modified to isolated converters very easily.
In this video we learn how optocouplers work and also look at some simple electron circuits you can make yourself to understand how an optocoupl. This is clearly shown in the schematic. The relays are 5 volt making this compatible with.
The input can be driven from 3.3v or 5v sources. Normal relays would have the control circuit and load/device circuit connected directly to the relay itself.
