Electronics. Dan Simon Cleveland State University ESC 120. Voltage. Voltage is the amount of work needed to move an electric charge High voltage in an electrical system is like high pressure in a hydraulic system
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Dan SimonCleveland State UniversityESC 120
Revised August 28, 2010
Ohio’s average electricity cost:
12 cents per kW-hr
A resistor reduces the rate of flow of electric current, measured in Ohms: V = IR
Example: If R1 > R2, then the current through R1 will be less than the current through R2
R = R1 + R2
R = 1 / (1/R1 + 1/R2)
Capacitors store electrical energy
Transistors can be used as electrically-controlled switches. The current through the transistor is proportional to the voltage applied to the base.
Diodes allow current to flow only in one direction.Light-emitting diodes (LEDs) emit light.The long lead connects to the positive voltage.
Internal connections in orange
Measures voltage, current, and resistance.
If you get unpredictable readings, check the battery!
Regulated 5 Volt power supply: “wall wart”
You need to cut off the connector so that you can connect the bare wires to your breadboard
Breadboard with connector posts, ready for power supply connections
Resistor value should be at least 400 ohms