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In the circuit below, 60 individual LEDs are used to indicate the minutes of a clock and 12 LEDs indicate hours. The power supply and time base circuitry is the same as described in the 28 LED clock circuit...
This metal detector circuit diagram utilizes the TDA0161 monolithic integrated circuit, which is designed to detect metallic objects by measuring variations in high-frequency Eddy current losses. The output signal is influenced by changes in supply current, which varies based...
This 1.5 volt LED flasher runs more than a year on a single 'D' cell and alternately flashes 2 LEDs at about a 1 second rate. The circuit employs a 74HC14 CMOS hex inverter that will operate at very...
The basic connection circuit for the ISO103 signal and power supply is illustrated. Each power supply terminal must include a bypass filter. If the isolated power supply output current exceeds 15mA, it is advisable to utilize an external filter...
This device emits intermittent beeping for approximately two seconds when a whistle is detected from a person within a range of around 10 meters. The first two inverters in IC1 function as audio amplifiers. IC1A amplifies the signal captured...
The Pearl CH-02 Chorus is a discontinued pedal known for its exceptional sound quality. It features four knobs: DEPTH, SPEED, TONE, and MIX BALANCE. The TONE knob specifically adjusts the tone of the effect sound, while the MIX BALANCE...
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