LAB ESSENTIAL
LED Indicator
LED Indicator
A 5 V triangle wave (red trace) is applied to the Field Coil, and the induced voltage in the 2000-turn Detector Coil is a square wave (green trace).
U.S. Educator Price
$21

When plugged into a detector coil, the LED flashes red or green as the detector coil passes through the magnet to indicate which direction the current flows through the detector coil.

What to Consider

See the Buying Guide for this item's required, recommended, and additional accessories.