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Principle of Switching power supply 24V products


Switching power supply 24V products, also known as 24V switching power supplies, are a type of high-frequency inverter switching power supplies. The switch tube is controlled by the circuit for high-speed pass and cut-off.

Switching power supply 24V products, also known as 24V switching power supplies, are a type of high-frequency inverter switching power supplies. The switch tube is controlled by the circuit for high-speed pass and cut-off. The direct current is converted into high-frequency alternating current and supplied to the transformer for transformation, thereby generating the required one or more sets of voltages!

customized Switching power supply 24V products
It is often used as a dedicated stable DC power supply for pressure, temperature sensors, rotary encoders and other testing instruments. Many manufacturers produce and distribute such products. The circuit of the whole machine is assembled in a metal shell that is easy to install and has good electromagnetic shielding. The input/output terminals are convenient for line connection, the failure rate is low, and the harsh industrial environment is tolerated. .
The working principle of Switching power supply 24V is:
1. The AC power input is rectified and filtered into DC;
2. Control the switching tube by high-frequency PWM (pulse width modulation) signal, and add that DC to the primary of the switching transformer;
3. High-frequency voltage is induced in the secondary of the switching transformer, which is rectified and filtered and supplied to the load;
4. The output part is fed back to the control circuit through a certain circuit to control the PWM duty cycle to achieve the purpose of stable output.
Switching power supply 24V circuit is a DC-AC-DC inverter circuit. It is a voltage and power converter that converts DC voltage and power into pulse voltage, and then rectifies it into another DC voltage. The input and output voltages are isolated by a switching transformer, which plays the role of power transmission and voltage/current conversion. The switching transformer in the circuit of this machine is a step-down transformer. The whole machine is composed of mains rectifier filter circuit, PWM pulse generation circuit, inverter power switch circuit and secondary rectifier circuit of switching transformer, voltage stabilization control and overload protection circuit.
Whether it is a switching power supply or a linear power supply, its low-voltage DC part is generally completely isolated from the AC high-voltage input part, so there is no voltage between the positive pole of the Switching power supply 24V and the neutral line (N)!

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