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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.

Electronic fuse electronic project circuit

A very simple electronic fuse can be built using electronic diagram below. These electronic fuse does not need to be replaced, can be "repaired" by simply pressing a button. By pressing S button current comes through Th thiristor and Rs resistor to the consumer .
After releasing button Th triac remains in conduction state, if the current passing through it does not fall below a certain value, holding current. To cancel the holding current is used resistor Rs and transistor T .

Circuit Diagram: 
Electronic fuse electronic project circuit

Safety polarity circuit connection diagram

A simple electronic circuit that prevents incorrect connection of polarized sources in circuit can be made using electronic diagram below. Safety of polarity from the diagram below was dimensioned for a voltage of 12 volts. When connecting correctly voltage to terminals 1 and 2 through RE1 resting contact, diode D1 and the coil current flows once the switch closes the circuit (relay closing, established by contact or connection with device connected).

Circuit Diagram: 
Safety polarity circuit conection diagram

Three digit counter electronic project

This electronic project is a simple three digit counter schematic diagram ,that use few electronic components .

Circuit Diagram: 
three digit counter electronic project schematic circuit


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