The following schematic shows the Relay Wiring Circuit Diagram for controlling an Air Conditioner or other higher high-current device from a microcontroller. This circuit is necessary if you are using a relay with a coil that needs more power than the microcontroller can supply. The diode protects the circuit in case the polarity is reversed.

high current relay circuit diagram



Related Post

Clarion NK1U Mind Wire Harness and Cable Connection
1-pole 4-way Multi-way Switch Symbols
RC Car Controller Circuit Diagram Design using Atmel 4414 IC
Sony ICF-2010 Headphone Jack Wiring Diagram
Video VGA Splitter Circuit Diagram using ECG2322