China's credit stabilized power supply production factory

Shanghai Yingshidan Electric Appliance Group Co., Ltd. Factory Manufacturing - Overview of Voltage Stabilized Power Supply
A regulated power supply is an important power electronic device, whose main function is to convert unstable alternating current (AC) or direct current (DC) into stable output direct current (DC) to ensure the normal operation of circuits and the stable operation of electronic devices. The following is a detailed introduction to a regulated power supply:

Definition and application scenarios of regulated power supply
The main function of a regulated power supply is to convert the input AC power into stable DC power, which can maintain a constant output voltage even in the case of input voltage fluctuations. This type of device is widely used in various electronic devices, especially in situations where the grid voltage is unstable or there is voltage distortion.
Application scenario examples
Power supply in remote areas: For areas with large voltage and frequency fluctuations in the power grid, a stable frequency power supply can effectively avoid the harm of voltage and frequency fluctuations to load equipment.
Industrial automation: In the field of industrial automation, regulated power supplies provide stable power supply for various production equipment and control systems, ensuring the continuity and safety of the production process.
Shanghai Yingshidan Electric Appliance Group Co., Ltd. Factory Manufacturing - Main Types of Voltage Stabilized Power Supply
Shanghai Yingshidan Electric Appliance Group Co., Ltd. Factory Manufacturing - AC Voltage Stabilized Power Supply
AC stabilized power supply is mainly used to stabilize the voltage of AC power and is suitable for household and light industrial environments.
Voltage regulator related information
1、 Shanghai Yingshidan Electric Appliance Group Co., Ltd. Factory Manufacturing - Definition and Basic Principles of Voltage Regulator
A voltage regulator is a device that can automatically adjust the output voltage to maintain stability. When the input voltage or load changes, the control circuit inside the voltage regulator will perform sampling, comparison, amplification and other operations, and then drive related components (such as servo motors) to change the position of the regulator carbon brush, or adjust the coil turns ratio to maintain the stability of the output voltage. For example, in some voltage regulators, when the grid voltage fluctuates, the control circuit adjusts according to the changes to ensure that the output voltage is within the set range, so that the connected electrical equipment can work normally.
2、 Shanghai Yingshidan Electric Appliance Group Co., Ltd. Factory Manufacturing - Types of Voltage Stabilizers
Linear regulator
Characteristics: Typically used for cost sensitive, noise sensitive, low current, or space limited applications such as headphones, hearing aids, wearable devices, and other consumer electronics and IoT devices.
Working principle: A linear regulator adjusts the voltage by connecting a variable resistor in series between the input and output. It dissipates excess voltage in the form of heat to maintain a stable output voltage. This method has relatively low efficiency, but performs well in some low-power application scenarios that require high noise and accuracy.
Switching voltage regulator
Characteristics: Typically used for applications that require high efficiency and performance, such as consumer, industrial, enterprise, and automotive applications.
Working principle: Switching regulators adjust voltage by quickly switching switching switching elements (such as transistors). It can convert the input voltage into high-frequency pulses, and then convert them into a stable output voltage through a filtering circuit. This method is highly efficient, but may generate electromagnetic interference and requires appropriate electromagnetic compatibility design.
3、 The main components of a voltage regulator
Voltage regulation circuit: This is the core part of a voltage regulator that adjusts the output voltage by changing the values of components such as resistors, inductors, or capacitors in the circuit, or by changing the connection method of the circuit.
Control circuit: responsible for monitoring and comparing the input voltage and output voltage, generating control signals based on the comparison results to drive other components (such as motors or switching elements) for voltage adjustment operations.
Servo motor (some voltage regulators have): In some voltage regulators, the servo motor rotates according to the signal from the control circuit, driving the position of the regulator carbon brush to change, thereby adjusting the coil turns ratio to achieve stable voltage. In larger capacity voltage regulators, the principle of voltage compensation may also be used to stabilize the voltage using a compensating transformer.
4、 Key points for selecting voltage regulators
Select based on load type
Pure resistive loads: such as incandescent lamps, resistance wires, electric furnaces, etc. When selecting equipment, the safety factor of the voltage regulator capacity is 1.25-1.5 times the total load power.
Sensory and capacitive loads: such as fluorescent lamps, fans, motors, water pumps, air conditioners, computers, refrigerators, etc. When selecting, the capacity of the voltage regulator should be 2-3 times the total power of the load. For large inductive and capacitive loads (such as electric motors and computers), due to their particularly high starting current (up to 5-8 times the rated current), the selection of voltage regulator capacity should be 2.5-3 times the load power.
Selection based on input voltage range: Ensure that the input voltage range of the voltage regulator can cover the actual input voltage fluctuation range. For example, some voltage regulators have input voltage ranges of single-phase 160V-250V, phase voltage 160V-250V, line voltage 280V-430V, and other different specifications, which need to be selected according to the actual grid voltage situation
Shanghai Yingshidan Electric Appliance Group Co., Ltd. Factory Manufacturing - DC Stabilized Power Supply
DC stabilized power supply is mainly used to stabilize the voltage of DC electricity and is commonly used for equipment that requires long-term stable power supply.
The working principle of a regulated power supply
The working principle of a regulated power supply mainly includes the following key steps:
Input and rectification
Firstly, AC power is processed through an input circuit to convert it into DC power. This step usually includes the cooling of the transformer and the action of the rectifier.
Filtering and smoothing processing
The rectified DC power also needs to be processed by a filtering circuit to remove AC components, making the output voltage smoother and more stable.
Output regulation
Finally, precise adjustment of the output voltage is achieved through a voltage regulator to ensure that the output voltage remains constant even in the event of input voltage fluctuations