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31.177.111.203
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Обновлено: 2025-08-19 21:44:12
(119 дней назад)
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sega genesis 2/32x/nomad a/v
9 pin mini-din female special. 9 pin mini-din female special connector at the console.
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simple lie detector
here's a simple lie detector that can be built in a few minutes, but can be incredibly useful when you want to know if someone is really telling you the truth. it is not as sophisticated as the ones the professionals use, but it works. it works by measuring skin resistance, which goes down when you lie.
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2 watt audio amplifier
notes: this was one of the earliest circuits that i ever designed and built, in spring 1982. at that time i had only an analogue meter and a calculator to work with. although far from perfect, this amplifier does have a wide frequency response, low distortion, and is capable of driving an 8 ohm speaker to output levels of around 5 watts with slightly higher distortion. any power supply in the range 12 to 18 volts dc may be used. circuit description the amplifier operates in class ab mode; the single...
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ir illuminator for night-vision tv cameras and scopes
this source uses leds and an astable oscillator to control the switch, duty-cycle, and effective ir illumination output. source: http://www.circuitos.cl.tripod.com.
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triangle / squarewave generator
here is a simple triangle/squarewave generator using a common 1458 dual op-amp that can be used from very low frequencies to about 10 khz. the time interval for one half cycle is about r*c and the outputs will supply about 10 milliamps of current. triangle amplitude can be altered by adjusting the 47k resistor, and waveform offset can be removed by adding a capacitor in series with the output.