Electronic Components. Battery A portable power source that has a positive and negative. Electronics works on Direct Current (DC) where electrons flow.

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Presentation transcript:

Electronic Components

Battery A portable power source that has a positive and negative. Electronics works on Direct Current (DC) where electrons flow from negative to positive. Other symbols will be used for Positive and Negative

Resistors used to control the amount of electricity flowing through a circuit

Potentiometer variable resistor, as you turn the knob, the resistance changes from 0 ohms (no resistance) to it’s maximum value (lots of resistance) Like a dimmer switch in a dining room

Photocell a special kind of resistor that reacts to light. The more light that hits it, the less resistance it has.

Switches devices that are used to turn ON and OFF the flow of electricity to a circuit.

Diode a diode is a device that allows current to flow through it in ONE direction only. There are two Leads. The anode and cathode.

LED (Light Emitting Diode) Gives off light when electricity flows through it. Has a positive and negative side.

Capacitor a device used to store energy much like a battery. Can be charged and discharged over and over. There are different types

Disc Capacitors stores small amounts of energy

Electrolytic Capacitor Stores large amounts of electricity. Has a positive and negative like a battery

SCR allows current to flow through it ONLY after a positive voltage is applied to the gate. The cathode must connect towards the negative side of the battery for it to work. Power must be remove from the circuit to reset the SCR.

Transistor the transistor works as a current amplifier. It uses a small base current to control a larger collector current. 2n3904 NPN Transistor2n3906 PNP Transistor

Integrated Circuit a device that has several components (transistors, resistors, capacitors, diodes, etc) condensed into a very small package. Each IC performs differently according to what is inside.

Integrated Circuits To figure out which pins are which, you need to remember that the text ALWAYS faces so you can read it, and the notch, dot, or line is on your left. Pin #1 is then on the bottom left corner

Integrated Circuits Once Pin #1 is established you read from left to right on the bottom then right to left on the top

Lab #12 (555 timer)

4017 Decade Counter Explained When a clock pulse (on/off or 9v/0v) is connected to pin #14, the outputs will advance one at a time

Decision Maker