Electronic Component Symbols

CIRCUIT SYMBOLS

Electronic Component Symbols - CIRCUIT SYMBOLS

Sensors

R3959343-25

ldr symbol

ldr

A light-dependent resistor, or LDR, adjusts its resistance based on its exposure to light. It’s indicated by a circle with a rectangle inside it, and two small arrows outside the circle pointing into it.

thermistor symbol

thermistor

A thermistor is a resistor that adjusts its resistance based on temperature. It’s indicated by a rectangle with a “hockey stick” line through it.