Today we will be designing a Multipurpose Power Supply. The Power Supply will be an Arduino UNO Power Supply Shield which will output multiple voltage range such as 3.3V, 5V and 12V.

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The complete circuit of this Variable Power Supply is shown below, Follow the Schematics and solder you components accordingly. As shown in schematics the variable voltage of 1.5 to 24V is mapped to 0 ...

This Automatic Battery charger circuit can be used to charge a 12V, 7Ah battery, or above. The charger maintains float voltage, if battery is fully charged.

Here is the circuit of an Arduino-based Panic Alarm! The wiring is very simple so that even a novice can construct this interesting circuit without any difficulty. Arduino is a family of ...

The circuit of Arduino-based shadow alarm is shown in Fig. 1. It consists of an Arduino board, power supply, light-dependent resistor (LDR) sensor, buzzer, relay driver and a few other components.

It needs two capacitors for filtering the power supply and output while requiring a power supply of 5V. For 5A model, the value that links the proportionality of output voltage and input current ...

Simple 5V power supply for digital circuits This circuit is a small +5V power supply, which is useful when experimenting with digital electronics. Small inexpensive wall transformers with variable ...