File name k-36.pdf
SOUND ACTIVATED SWITCH KIT
Assembly and Instruction Manual
If any parts are missing or damaged, see instructor or bookstore. DO NOT contact your place of purchase as they will not be able to help you. Contact Elenco Electronics (address/phone/e-mail is at the back of this manual) for additional assistance, if needed.
Qty. 1 3 1 4 4 1 1 1 1 1 Qty. 4 2 2 1 1 Qty. 1 1 1 1 1 Qty. 1 1 1 1 2 Symbol R17 R1, R5, R16 R3 R4, R10, R12, R14 R2, R6, R9, R13 R7 R15 R11 R8 P1 Symbol C5, C6, C8, C9 C1, C3 C2, C4 C7 C10 Symbol Q1 Q2 U2 U1 LED Symbol MIC Value 4.7k 5% 1/4W 10k 5% 1/4W 22k 5% 1/4W 100k 5% 1/4W 220k 5% 1/4W 270k 5% 1/4W 330k 5% 1/4W 1M 5% 1/4W 4.7M 5% 1/4W 100k Trim Pot Value .001µF (102) .01µF (103) .1µF (104) 1µF 100µF Value 2N3904 MPS6531 4001 4011 Color Code yellow-violet-red-gold brown-black-orange-gold red-red-orange-gold brown-black-yellow-gold red-red-yellow-gold red-violet-yellow-gold orange-orange-yellow-gold brown-black-green-gold yellow-violet-green-gold Part # 144700 151000 152200 161000 162200 162700 163300 171000 174700 191611 Part # 231036 241031 251010 261047 281044 Part # 323904 326531 334001 334011 350002 Part # 518036 551124 568000 590098 664014
Description Discap Discap Discap Electrolytic (Lytic) Electrolytic (Lytic)
Description Transistor Transistor Integrated Circuit Integrated Circuit LED Red
Description PC Board Solder Microphone Battery Snap 9V IC Socket 14-pin
LED Transistor Capacitors Potentiometer Microphone
IDENTIFYING RESISTOR VALUES
Use the following information as a guide in properly identifying the value of resistors.
IDENTIFYING CAPACITOR VALUES
Capacitors will be identified by their capacitance value in pF (picofarads), nF (nanofarads), or µF (microfarads). Most capacitors will have their actual value printed on them. Some capacitors may have their value printed in the following manner. The maximum operating voltage may also be printed on the capacitor.
Second Digit First Digit
For the No. Multiply By
10k 100k .01
Tolerance* Maximum Working Voltage
Note: The letter "R" may be used at times to signify a decimal point; as in 3R3 = 3.3
* The letter M indicates a tolerance of +20% The value is 10 x 1,000 = 10,000pF or .01µF 100V
The letter K indicates a tolerance of +10% The letter J indicates a tolerance of +5%
Just clap your hands together twice and watch the Sound Activated Switch turn on the light emitting diode (LED). Clap twice more and watch the LED turn off.
THEORY OF OPERATION
Figure 1 shows the block diagram of the Sound Activated Switch. It consists of a transistor amplifier, a transistor switch and two types of digital circuits, a one-shot and a flip-flop.
ONE-SHOT Figure 1