Download Simple Circuits

Simple Circuits
Require four basic components.
1. Conductor, like wires.
2. Voltage source, like a battery.
3. Load, like a lamp or a buzzer.
4. Control, like a switch.
Simple Circuits
Require four basic components.
See schematic symbols below.
Wire
Buzzer
Battery
Switch
Electron Theory of Current
Current flows from negative to positive.
+
-
Battery
Direct Current DC
Current flows from negative to positive
only in one direction and never flows in
the opposite direction. Batteries provide
DC.
+
-
Battery
Alternating Current AC
Current flows from negative to positive in
one direction and then reverses direction
when the polarity changes. Convenience
outlets in the walls provide AC from power
plants.
+
-
Generator
-
+
Generator