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RAMSEY CB-1 CHATTERBOX PARTS LIST
SEMICONDUCTORS
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1
ISD1020A sound recorder IC [U4]
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1
MC68HC705K1 microprocessor IC [U3], 16 pin IC with white sticker
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1
LM380 2 watt audio amplifier IC chip [U2]
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1
MC14511 (4511) BCD to 7 segment IC chip [U1]
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1
7805 5 volt regulator [VR1]
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7
2N3904 NPN transistor [Q1,2,4,5,6,7,9]
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1
221334 PNP (2N3906 type) transistor [Q8]
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1
1N4148 style silicon diode (glass body with black band) [D2]
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2
7 segment displays [DS1,2]
CAPACITORS
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7
.01uF disc ceramic (marked .01 or 103 or 10 nF) [C1,5,6,13,17,19,20]
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4
.1uF disc ceramic (marked .1 or 104) [C4,8,11,18]
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1
100pF disc ceramic (marked 100 or 101) [C10]
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2
1uF electrolytic [C9,14]
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3
10uF electrolytic [C2,7,16]
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2
220uF electrolytic [C3,15]
RESISTORS
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1
2 ohm resistor (red-black-gold) [R13]
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2
75 ohm resistor (violet-green-black) [R2,3]
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5
1K ohm resistor (brown-black-red) [R4,5,8,24,25]
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3
2.2K ohm resistor (red-red-red) [R7,17,26]
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4
4.7K ohm resistor (yellow-violet-red) [R9,10,18,19]
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9
10K ohm resistor (brown-black-orange) [R1,11,14,15,20,21,22,23]
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1
470K ohm resistor(yellow-violet-yellow) [R16]
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1
10K ohm potentiometer (marked 103) [R6]
MISCELLANEOUS
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1
5-Pin DIN Connector [J1]
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1
Electret condenser microphone [MK1]
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1
Power jack [J4]
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2
Mini jacks [J2,3]
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1
Switched potentiometer [POT1]
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3
Push button switches [S1,2,3]
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16" red hook-up wire
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16" white hook-up wire (the color of this wire may vary due to supply- use
whatever color is supplied)
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16" black hook-up wire
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5"
Buss wire (to be used in place of spare leads if they are used up)
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1
28 pin IC socket
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1
16 pin IC socket
REQUIRED, NOT SUPPLIED
CB-1 • 7
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