What is the difference between an open frame power supply and a normal power supply?

There are five main functions of the open frame power supply, which are isolation function, voltage conversion function, protection function, noise reduction function, and voltage regulation function.

What is the internal structure of an open frame power supply?

How does an open frame power supply work?

What is the difference between an open frame power supply and a normal power supply?

What is the internal structure of an open frame power supply?

1, ac-dc switching power supply, alternating current to direct current switching power supply. Most of them convert the 220v alternating current of the mains into low-voltage direct current for supplying electrical appliances. Such as the power supply part of TV sets and monitors.

2, dc-dc switching power supply, switching power supply from direct current to direct current. For example, the mobile phone charger used in the car is to convert the 12v or 24v of the battery to 5v.

How does an open frame power supply work?

The open frame power supply can form a constant current device in the circuit, such as dry battery, storage battery, DC generator, etc., which is called DC power supply. The DC power supply has two electrodes, positive and negative, the potential of the positive electrode is high, and the potential of the negative electrode is low; when the two electrodes are connected to the circuit, the DC power supply can maintain a constant potential difference between the two electrodes, thus forming a positive to negative electrode in the external circuit. of constant current. To keep the potential difference between the two poles of the DC power supply constant, the positive charge that flows from the positive pole to the negative pole in the external circuit must return from the negative pole to the positive pole in the power supply against the direction of the electric field force. This process cannot rely on electrostatic force, but can only be realized by some kind of "non-electrostatic force" which is opposite to the electrostatic force.

What is the difference between an open frame power supply and a normal power supply?

1. Different in appearance

The non-module power supply leads out a lot of power supply lines from the inside, and the module power supply is replaced by the module interface board. After disassembling the power supply, it can be seen that the power supply line of the non-module power supply is directly drawn from the PCB board, while the open frame power supply is to connect the power supply line drawn from the PCB board to the module board at the output interface.

2. Different work efficiency

There is only one connection point between the PCB board and the power supply line of the non-modular power supply, so the loss is very low. However, there are two connection points between the PCB board of the open frame power supply and the power supply wires connected to the host, and the losses are higher due to the additional connection points. The efficiency of the module power supply under the same specification is a little lower than that of the non-module power supply.

3. Different conversion efficiency

The higher the actual power, the higher the damage of the module power supply. For example, the open frame power supply with a 100% load under the mains is about 0.6% lower than that of the non-module power supply. Different power supplies have different performances, but under the same state, open frame power supplies do have lower conversion efficiency than non-modular power supplies.

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