12V Portable and Mobile Power Supply
The 12V portable power supply circuit is designed to deliver a reliable output current of 1 amp, making it suitable for various applications, including powering small electronic devices and circuits. The design utilizes a straightforward approach, ensuring that it can be built with commonly available components, thus minimizing costs.
The core of the circuit typically includes a transformer, a bridge rectifier, and a voltage regulator. The transformer steps down the AC voltage from the mains supply to a lower AC voltage, suitable for rectification. The bridge rectifier converts the AC voltage to DC voltage, which is then filtered using capacitors to smooth out the ripples, providing a more stable output.
After rectification, a voltage regulator, such as the 7812, is employed to maintain a constant output voltage of 12V despite variations in input voltage or load conditions. This regulator is capable of providing the necessary current while ensuring that the output remains stable and within acceptable limits.
Additional filtering capacitors may be included at the output of the voltage regulator to further enhance the stability and smoothness of the output voltage. It is also advisable to incorporate protection features such as fuses or resettable polyfuses to prevent damage from overcurrent conditions.
Overall, this 12V power supply circuit is designed for portability and efficiency, making it an ideal choice for hobbyists and professionals alike who require a reliable and cost-effective power source for their electronic projects.A 12V portable and mobile power supply circuit design which can be built quite inexpensively and needs only a minimum of circuitry. This circuit will give output current of 1 amp, well stabilized and smoothed 🔗 External reference
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