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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.

Simple electronic lock circuit diagram project

Using some electronic component, a numeric keypad, a CMOS integrated circuit, three transistors and optocoupler can be made a simple electronic lock.

Circuit Diagram: 
Simple electronic lock circuit diagram

UAA3000 timing circuit electronic project

A simple timing circuit can be built using electronic diagram below. This electronic timer circuit is built using integrated circuit UAA3000 which has the following features: can be powered directly from the network; has built in stage to command triacs, triac coupled to the circuit is always lit when the voltage zero crossing network, a pause in supply does not affect the function of timing.
Time that can be programmed is quite large: 1 ... 15 minutes, in increments of one minute, or 1 ... 15 hours, in increments of one hour.

Circuit Diagram: 
UAA3000 timing circuit electronic project
UAA3000 timing circuit electronic project configuration

Hot wire thermocutter for polystyrene

A hot wire thermocutter for polystyrene can be designed using electronic diagram shown below

Circuit Diagram: 
Hot wire thermocutter for polystyrene circuit diagram electronic project

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