Combination Relay Changeover Loads

Application

A pulse drives the relay coil while separate resistors reveal the normally open and normally closed contact states.

Schematic Organization

The contact supply is on the upper left and the coil drive below it. The changeover relay is centered. Separate NO and NC load branches are on the right.

Expected Behavior

The two contact outputs exchange states as coil current crosses the pickup and dropout thresholds.

Suggested Experiments

Adjust the coil pulse amplitude and compare the complementary NO and NC contact waveforms.

Featured Component

Combination Relay is the featured device. Its editor-visible symbol, pins, parameters, and simulation model are used directly in this circuit.