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Comparing Alternative Energy Forms

Schematics

In large, complex electronic circuits it is impractical and unreasonable to draw each component. For this reason, small symbols are used for each component. This guide gives the symbols for a small sampling of components.

ResistorFixed Resistor

CapacitatorFixed Capacitator

Variable ResistorVariable Resistor

Variable CapacitatorVariable Capacitator

PNP transistorPNP Transistor

Solar CellSolar Cell

Phototransistor (NPN)Phototransistor (NPN)

PhotodiodePhotodiode

Light Emitting DiodeLight Emitting Diode

DiodeDiode

AmmeterAmmeter

VoltmeterVoltmeter

BatteryBattery or Power Source

LampLamp