Page 23 - The Basics IA by ETron Circuit Labs

through the 1K Ohm resistor connected to the positive terminal on the 9-volt battery. You will use a 1K Ohm resistor to make sure that not too much current will flow to the gate. SCRs are used in alarm circuits, etcProcedure:Assemble the circuit and connect a 9-volt battery to the Battery Snap. Now touch the wire coming from the 1K Ohm resistor to the gate of the SCR. This positive pulse from the battery will cause the SCR to conduct and the LED will light up and remain lit even after you remove the pulse from the gate.Observations:By doing this experiment you have seen that current will flow through a SCR only after you put a positive pulse on the gate.Conclusion:By completing this Lab you can conclude that the function of a SCR is to conduct electric current only after a positive pulse is put on the gate.Check Your Work Here a b c d e 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 a b c d e f g h i j 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 f g h i j Here’s What You’ll Need...RESISTORR1R2hole 10ahole 23a220 Ohm - (Red, Red, Brown, Gold)hole 14dhole 23d1K $ (Brown, Black, Red, Gold) Anode CathodeLIGHT EMITTING DIODE (LED)LED 1Cathode (flat side)Anodehole 10c hole 9cCathode GateSCR - Silicon Controlled RectifierSCRGate Anode Cathodehole 4f hole 5f hole 6fAnodeREDBLACKred = hole 23e black = hole 20fB1WIRESW1 = 6j & 20j W2 = 9d & 5iW3 = 14e & (Touch to Gate of SCR)SCAN HERE TO SEE MORE ONLINE21AnodeVisit us online at www.ETronCircuit.com for more exciting projectsLab ObservationsLAB 11