Page 67 - The Basics IA by ETron Circuit Labs

charging time causes the frequency of the output on Pin 3 to change.These tones can be made louder by feeding them to a transistor and amplifying them. Compare this circuit to Lesson 31 for a sample way to connect the output of Pin 3 to a transistor.Procedure:Assemble the circuit and connect a 9-volt battery to the Battery Snap and touch one of the tone probe wires to a resistor lead, from R4 to R11. As you touch each one, you will hear a different tone. Use both hands, one tone probe in each one, and you can play your favorite tune.Note: If you hold the probe wire too long on the 10 Ohm resistor it will get hot.Check Your Work HereHere’s What You’ll Need...R2R1R5 R7 R9RESISTORR3 R4 R6R8 R10hole 12h hole 13hhole 6jhole 11j10 Ohm ' (Brown, Black, Black, Gold) hole 12ahole 22hhole 10i220 Ohm - (Red, Red, Brown, Gold)hole 22bhole 22d1K $ (Brown, Black, Red, Gold) hole 28bhole 30dhole 22jhole 12b47 Ohm ' (Yellow, Violet, Black, Gold) hole 22a470 Ohm ( (Yellow, Violet, Brown, Gold) hole 22chole 22ghole 22i33K $ (Orange, Orange, Orange, Gold) 120K & (Brown, Red, Yellow, Gold) hole 27jhole 21ihole 27ahole 29c2.2K % (Red, Red, Red, Gold) hole 30g3.3K % (Orange, Orange, Red, Gold) hole 29h6.8K & (Blue, Gray, Red, Gold) hole 28i16K % (Brown, Blue, Orange, Gold) C1 1040.1uFDISC CAPACITORSR11 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 IC 1INTEGRATED CIRCUIT8 7 6 5 holes13e-10e1234holes 13f - 10fSPEAKERSPKR 1hole 1c hole 6gREDBLACKB1red = hole 1b black = hole 5iWIRESW1 = 21f & 22e W2 = 21h & 22f W3 = 12g & 11c W4 = 13d & 10g W5 = 1a & 13b W6 = 5j & 13jTone Probes 11a & 11bSCAN HERE TO SEE MORE ONLINE65LAB 33Visit us online at www.ETronCircuit.com for more exciting projectsLab Observations