Digital adjustable DC voltage regulatorThe power supply has excellent electronic characteristics such as ultra-high accuracy, height, and high stability. It is a good choice as an adjustable power supply in research units, laboratories, or as a fixed power supply for product life testing on production lines. Moreover, it has a complete protection circuit, which can better meet the simple and convenient usage needs of users. Compared with switch mode power supplies, it has the advantages of high precision, small ripple, no high-frequency radiation interference, and wide applicability.

Digital adjustable DC voltage regulatorpower supply

Create an adjustable DC regulated power supply with digital display, which can be in the form of a linear regulated power supply or a switching power supply.

Requirement: 1. The power supply should be 220V AC power.

2. The DC output range is 9v to 12v.

3. The output current should reach at least 500mA.

4. The output voltage ripple is less than 50mv.

5. The magnitude of the output voltage can be displayed through a digital tube, with the result displayed to one decimal place (i.e. the percentage may not be accurate). The error between the displayed result and the actual output voltage should not exceed 5% (measured with a multimeter)

Digital adjustable DC voltage regulatorCircuit installation and debugging

(1) To improve students' hands-on ability, they independently design printed circuit boards and solder them.

(2) Add a signal to the input of each module circuit and test the output signal to verify whether each module can achieve the specified specifications.

(3) Focus on testing the voltage stabilization coefficient of the voltage stabilization circuit.

(4) Connect the circuits of each module, debug the whole machine, and measure the various indicators of the system.