Composition description of programmable DC power supply:

Reaction amplification circuit:

The purpose of the reaction amplification circuit is to appropriately compensate the output voltage so that the subsequent output voltage reaches the expected value. Commonly used reaction amplification circuits are bipolar and unipolar. Among them, the single-stage negative reaction is generally used for low-noise applications. Medium, while Level 2 negative reactions are commonly used for high-frequency use.

Silicon semiconductor switching circuit:

This circuit is composed of a 3-terminal flyback power field effect transistor or a push-pull power field effect tube. Its function is to convert the input alternating current into a pulsating current.

Baseline source:

The function of the reference source is to sample and shape the input voltage signal, then compare it with the set value to determine the size of the error, and then correct the modulated parameters. Commonly used reference sources include the true effective value (E1) and the average value (E2 )2 kinds.

Latches:

The latch is an active adjustment component, and its function is to maintain a certain frequency during the adjustment process. The latch is usually composed of two series resonant circuits, one of which is the fundamental frequency, and the resonant frequency of the other circuit is carrier frequency.

Controller:

The controller is the control part of PWm-pwm conversion. It issues corresponding instructions according to the given control requirements to turn on, turn off or cut off the thyristor.

load:

The load can be a resistor or other passive components. Since the PWm-pwm conversion process is a contactless switching, the intermediate link can be omitted and the signal can be directly added to the load to achieve rapid signal transmission.

Structure of programmable DC power supply:

The internal block diagram of a typical 3-terminal flyback power field effect transistor is given. The area within the dotted box in the figure is called the gated area, and the area within the solid line box is called the non-gated area.

Programmable high-precision DC power supply (PWM) is a new type of power supply that uses digital control methods to convert alternating current.