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The current generated flows through clips placed on the earlobes. The output current is adjustable from 80 to 600 microamperes, following the recent launch in Europe. The described device utilizes a current generation mechanism that delivers a controlled microcurrent through...
Below are three examples of controlling a relay from the PC's parallel printer port (LPT1 or LPT2). Figure A shows a solid-state relay controlled by one of the parallel port data lines (D0-D7) using a 300-ohm resistor and a...
The generated alternating current (AC) at both ends of the voltage is adjusted after being rectified to supply the motor armature windings, allowing for speed adjustments of a 15W lamp. It is noteworthy that despite the freewheeling role of...
This electronic game pits a human player against the machine. The opponents use a common game token and take turns moving along a path by one, two, or three steps, with the winner being the first to reach the...
A resistor R8, capacitors Cd, and a thyristor V AC switch form a delay circuit. The lamp's lighting delay time is determined by the resistor Rs and capacitor C4, with a delay of approximately 40 seconds as indicated in...
The battery tester utilizes four transistors and two LEDs to indicate the status of any battery being tested. Transistors Q3 and Q4 are configured in a Darlington arrangement, providing extremely high gain. LED L2 illuminates when a small positive...
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