2N3055 Variable Power Supply
This variable power supply circuit is designed to provide a versatile and adjustable output voltage, suitable for various electronic applications. The circuit typically utilizes a linear voltage regulator, such as the LM317, which is capable of outputting a range of voltages from 1.5 V to 15 V.
The design includes a few key components: a transformer to step down the AC mains voltage, a bridge rectifier to convert AC to DC, and filter capacitors to smooth the rectified voltage. The adjustable output is achieved by connecting a pair of resistors to the voltage regulator, which sets the output voltage according to the desired level based on the formula provided in the regulator's datasheet.
To ensure stable operation, a heat sink may be added to the voltage regulator, especially when the circuit operates at higher output currents. The maximum output current of 500 mA indicates that the circuit can power small to medium-sized loads, making it suitable for testing and powering various electronic devices.
Safety features, such as fuses or circuit breakers, can be integrated into the design to protect against overcurrent conditions. Additionally, proper decoupling capacitors should be placed close to the output to filter out any high-frequency noise, ensuring a clean power supply for sensitive components.
Overall, this simple variable power supply circuit is an effective solution for providing adjustable voltage levels with minimal cost and complexity, making it an ideal choice for hobbyists and professionals alike.This simple variable power supply circuit has a low production cost and delivers an output voltage between 1,5 V and 15 V with a 500 mA maximum current. It.. 🔗 External reference
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