2. Fixed voltage DC regulated power supply
The adjustable output voltage is the biggest feature of the adjustable DC regulated power supply. Because the electricity is adjustable, the scope of application is wider, and it is widely used in laboratories and maintenance occasions, so it is also called "maintenance power supply" and "experimental power supply". In practice, products for laboratory and maintenance applications will add more additional practical functions, such as adjustable current limiting function, tracking function, etc. The current limiting function is more practical. It can set the maximum current output by the regulated power supply. When the current output exceeds the set value, the voltage will drop, but the current will not continue to increase, similar to entering the constant current mode. Some power supplies provide overcurrent protection function. Once the current exceeds a predetermined value, it will enter the protection state, cut off the output, and need to restart the power supply to restore the output. In the experiment and maintenance, short-circuits sometimes occur due to misoperation or circuit failure. The current limiting function not only protects the safety of the power supply itself, but also protects the components on the circuit, so that they will not be impacted by large currents. Generally, the current of the common adjustable DC regulated power supply on the market is not large, and the output current is 1~3A, which can meet the maintenance and experimental needs of ordinary digital products and mobile phone communication products.
2. Adjustable DC power supply
Multi-channel adjustable DC regulated power supply is a kind of adjustable regulated power supply, which is characterized in that one power supply provides two or even three or four channels of output that can independently set the voltage, which can basically be regarded as several single-channel output. The power supply is used in combination, which is suitable for occasions that require multiple voltage power supplies. Advanced-point multi-channel power supply also has a voltage tracking function, so that several channels of output can be adjusted in conjunction.
3. Multi-channel DC regulated power supply
Precision adjustable DC regulated power supply is a kind of adjustable regulated power supply, which is characterized by high resolution of voltage and current regulation, and voltage setting accuracy better than 0.01V. In order to accurately display the pressure, the current mainstream precision power supplies are indicated by a multi-digit digital meter. The solutions of the voltage and current limiting precision adjustment mechanism are different. The low-cost solution uses two potentiometers for coarse adjustment and fine adjustment, the standard solution uses a multi-turn potentiometer, and the high-end power supply adopts a digital setting controlled by a single-chip microcomputer. The regulated power supply controlled by the single-chip microcomputer is also called the numerical control power supply, and it is easier to achieve precise adjustment and setting through the numerical control method. The internal circuit of the precision regulated power supply is also relatively advanced, and the voltage stability is also relatively good, and its own voltage drift is small, which is usually suitable for precision experimental occasions. Precision DC regulated power supply is a domestic name. There is basically no nominal precision power supply for imported power supplies, only high-resolution power supplies and programmable power supplies.
4. Resolution CNC power supply
Programmable power supply is an adjustable regulated power supply digitally controlled by a single-chip microcomputer, and the parameters set by the segment can be stored for later recall. There are many parameters set by the programmable power supply, including basic voltage setting, power limit setting, overcurrent setting and extended overvoltage setting. Usually the programmable power supply has a high setting resolution, and the settings of the voltage and current parameters can be input through the numeric keyboard. The self-voltage drift of mid-to-high-end programmable power supplies is also very small, which is mostly used in scientific research occasions.
5. Programmable power supply
The standard voltage reference source is a special kind of regulated power supply. Its function and internal circuit are different from ordinary power supply type regulated power supply. The load capacity itself is very low, but the voltage accuracy is very high and the drift is very small.
