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Various simple electronics projects for beginners

Various simple electronics projects circuits diagrams for hobbyist and beginners . Simple circuits, mini projects with diagrams and description from many electronics categories.

Light by whistle electronic project circuit diagram

Connecting the electric circuit to the lighting installation can be on or off the light by whistle. The circuit is built using the UM3763 chip, a switch controlled by sound. Buzzer piezo-ceramic is used in circuit as a microphone. When it captures a tone frequency between 1.2 kHz and 1.8 kHz, output pin 8, will flip (bulb goes off to on, or turn to off).

Circuit Diagram: 
Light by whistle electronic project circuit diagram

Electronic timer with display electronic project using CMOS

Using this electronic scheme can be built an electronic timer which can be set to measure a maximum of 60 hours. The electronic timer allows the fixation of some intermediate time. On reaching this point, a buzzer will sound. The circuit is built using ICM7217 integrated circuit, manufactured by Intersil, which contains a CMOS counter up / down, with 4 digits and display properly.

Circuit Diagram: 
Electronic timer with display electronic project using CMOS

Panel voltmeter ammeter electronic project using CMOS

A panel voltmeter ammeter very cheap, can be designed using this electronic scheme that uses CMOS electronic components.

Circuit Diagram: 
Panel voltmeter ammeter electronic project using CMOS

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