Elenco Sound Activated Switch - Manual (Page 8)

SCHEMATIC DIAGRAM
QUIZ
1. The Sound Activated Switch consists of a transistor amplifier, a transistor switch and _______ types of digital
circuits.
2. A ____________ is created when hands are clapped together.
3. A one-shot is also called a _____________ multivibrator.
4. When triggered, the first one-shot will remain at a logic 0 for ______ second(s).
5. When both inputs of NOR gate U2A are at a logic 0, the output will be at a logic ______.
6. A flip-flop is also called a _____________ multivibrator.
7. A flip-flop is a circuit whose output __________ __________ changes when a pulse is applied to the input.
8. The voltage needed at the input of the NOR gates to switch the outputs from one state to the other is between
______ and ______ volts.
9. When current flows through an LED, it will emit ____________.
10. The transistor amplifier is a ____________ emitter amplifier set at a gain of ________.
+
+
+
Answ ers: 1. tw o; 2. wa ve fo rm ; 3. monostable; 4. 0.25; 5. 1; 6. bistab le; 7. logic level; 8. 4.5, 5.5; 9. light; 10. common, 50
FOIL SIDE OF PC BOARD
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