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| Electronic Project Kits |
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Page 29 |
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1 WATT STEREO AMPLIFIER An amplifier designed with portability in mind, ideal for battery applications. A full watt from each channel, excellent fidelity. Uses a Samsung KA2209 IC. Small size: the board is 1-3/8” by 2”. All basic parts supplied, including PC board; you supply two 8-ohm speakers. We suggest a six volt or nine volt battery pack using AA cells, use D cells if extra long battery life is required. Amplify your CD or Walkman etc.. 80-870 ................................... $13.10 |
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STEREO VU METER This is a very eye appealing audio accessory. Displays an approximate output level for each channel of stereo amplifier. Connects to the speaker terminals, levels are displayed in ten discrete steps. User may select a moving dot bar appearance. Uses two LM3915 IC’s, includes a discussion of measuring audio power. 80-880 ................................. $22.95 |
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117 VOLT AC RELAY BOARD Many electronic projects use a low voltage circuit, i.e. timer, light sensor, dark sensor, temperature sensor, movement detector etc.. and output a signal when a certain predetermined event occurs. The signal is often a rising or falling 12 volt pulse, but then what do you do with it? You use it with this circuit to control a relay capable of handlng up to ten amps (or five amps @ 240VAC.) The circuit includes a DPDT relay with a life expectancy of about ten million cycles. Be sure to house this circuit in a suitable case, from exposed 110V AC connections. 80-840 ................................. $17.95 |
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PARALLEL PORT RELAY BOARD For the IBM PC (software included). With each advance in personal computers, a surplus of unwanted older machines increases, either at give away prices or you may have one sitting on a shelf. Thus you can have a low cost, sophisticated “dedicated controller” to turn on or off devices in the home or lab or radio shack etc.. The circuit includes eight relay controlled with (included) software for either DOS or Windows 3.1. Connects to the parallal port of any IBM-PC. 80-740 ................................. $64.95 |
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OSCILLATOR
BUILDING BLOCKS Build and experiment with a stable, monostable and RS flip-flop multivibrators on one PC board with six LED’s. See and understand exactly how each works. This is a very educational kit and an excellent introduction to electronics. Operates on 9V battery. 80-090 ................................... $9.95 |
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3 WATT STEREO AMPLIFIER The Rohm BA5406 is used to make this powerful little stereo amplifier. The entire circuit is on a 1-1/2” X 2 1/2” CIRCUIT BOARD. You’ll need to allow added space of 1-1/2” x 1-1/2” x 2-1/2” for the heat sink, plus ventilation for same. In addition to a 12 VDC power supply (batteries), you will need to provide 4 or 8 ohm speakers, cables and a heat sink compound to put between the IC and the heat sink. 80-900 ................................. $18.95 |
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17-1/2 WATT MONO AMPLIFIER A high quality audio amp that can operate on a low voltage, 12 V DC recommended. Uses the Hitachi HA 13001 IC and a dozen external components for a compact and powerful monaural amplifer. Builder must supply his choice of speaker (4 or 8 ohm) and some heat sink grease to apply between the IC and the heat sink. Includes PC board and all parts. Build two for stereo. 80-1105 ............................... $17.95 |
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FOR
FUN, C.O.B.PROJECT KITS |
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FOUR TRAIN SOUND
EFFECTS |
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| AMBULANCE, FIRE
AND POLICE SOUNDS Sirens and machine guns and more, great for kids toy! 80-940 ................................... $9.95 |
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