Newest circuit diagrams
Controlled by indoor and outdoor temperature
Simple, high reliability design
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Stand-alone, 9V battery powered unit. Three-level input selector, three-band tone control
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Dual-purpose test-instrument. Very simple circuitry, 1.5V Battery-operated
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This is a complete alarm system with 5 independent zones suitable for a small office or home environment. It uses just 3 CMOS IC's and features a timed entry / exit zone, 4 immediate zones and a panic button. There are indicators for each zone a "system armed" indicator
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This is a very basic alarm designed to let you know when the electricity supply fails. The alarm is powered from a battery which uses no current consumption at all in standby, a battery should therefore last its full shelf life.
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This is a VHF amplifier for the Band 2 Radio Spectrum tuning approximately 88 - 108 Mhz.
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Three channels - Three operating modes. Completely ac-insulated circuit board.
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This antenna is the result of long term development and user feedback.
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Bass, Treble, Harmonic modifier and Brightness controls. Output power: 40W into 8 Ohm and 60W into 4 Ohm loads
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It has the ability to control up to 8 pads through a 6 core cable.
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