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Digital Stop watch circuit

A digital stop watch or digital timer circuit schematic built around timer IC and counter IC with multiplexed LED display

regulador de voltaje 20 amperios

Construir reguladores de voltaje con transistores - diseñar, hacer con o

Digital Fan Speed Control

Digital fan speed control circuit design for fans based induction motor. The speed can be varied wide range since it can alter the voltage input of the fan

2N3055 MJ2955

2N3055 MJ2955

the  electronic dog repeller circuit produces a discomforting but not harmful

The electronic dog repeller circuit produces a discomforting but not harmful, high frequency sound, audible to dogs but not to humans. Help stop the approa

USB FM transmitter circuit

USB FM transmitter circuit

Here's a simple VHF FM transmitter that could be used to play audio files from an player or computer on a standard VHF FM radio.

DIGITAL STOP WATCH

This circuit is under:, circuits, Digital Stopwatch With 7 segment Schematic Stop watch is made with a digital timer IC and IC 4 digit counter with multiplexed LED. consists digit counter, an internal output latch, NPN output for

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