Page 5 - The Basics IA by ETron Circuit Labs

ce bb ecPNP TRANSISTORRESISTORFixed Value ResistorA resistor limits, or controls, the amount of curren flowing through a circuit by presenting a opposition or resistance to the current flow.330 Ohm ' (Orange, Orange, Brown, Gold) 470K & (Yellow, Violet, Yellow, Gold) Solderless Circuit BoardA solderless circuit board is used to connect electronics components and wires without having to use solder.NPN TRANSISTOR10 Ohm ' (Brown, Black, Black, Gold) 47 Ohm ' (Yellow, Violet, Black, Gold) 100 Ohm - (Brown, Black, Brown, Gold)220 Ohm - (Red, Red, Brown, Gold)33K $ (Orange, Orange, Orange, Gold) 120K & (Brown, Red, Yellow, Gold) 470 Ohm ( (Yellow, Violet, Brown, Gold) BIPOLAR TRANSISTOR (NPN & PNP)A transistor is used to amplify voltage or current. It has 3 terminals: Emitter, Base, and Collector. According to how they are made, they become an NPN or PNP type. Look at the differences in the schematic symbols above. In this lab, the transistor marked 3904 is an NPN and the one marked 3906 is a PNP.SWITCHThere are several types of switches.Slide Switch and Pushbutton are 2 examples.A slide switch or a pushbutton switch is a device that opens or closes an electric circuit. In the following Labs you will use a Pushbutton Switch.Wire X 26Wires will be used to complete the circuits in the following Labs. In addition, we suggest twisting one end of a wire around each of the terminals on the speaker, switch and potentiometer. As an additional option, you can solder those connections as well.INTEGRATED CIRCUIT 555 Timer ICIntegrated Circuits (IC’s) have several components (transistors, diodes, resistors, capacitors, etc) condensedinside of a very small package. Each type of IC performs a different purpose according to the different components it has inside.POTENTIOMETERVariable Value ResistorA potentiometer is a variable value resistor which means that you can adjust the resistance by twisting the shaft.PHOTOCELL(Light Dependent Resistor)A photocell is a special kind of resistor that varies its resistance according to the intensity of the light that hits its surface. It does not generate electric current like a photo-voltaic cell.SPEAKERThe purpose of the speaker is to produce sound waves from a variable electric current that flows through it.SCAN HERE TO SEE MORE ONLINE3t nQty 1 Qty 2 Qty 2Qty 1 Qty 2 Qty 3 Qty 1Qty 3Qty 3 Qty 1Qty 2 Qty 11K $ (Brown, Black, Red, Gold) 2.2K % (Red, Red, Red, Gold) Qty 5Qty 13.3K % (Orange, Orange, Red, Gold) 6.8K & (Blue, Gray, Red, Gold) 10K % (Brown, Black, Orange, Gold) 16K % (Brown, Blue, Orange, Gold) Qty 1Visit us online at www.ETronCircuit.com for more exciting projects