What should I pay attention to when installing a power module?

The reason why the accessories are called accessories is mainly because it has to be combined with other accessories to be able to play its due effect, the power module is the same, we have to install it after we buy it, so what problems do we need to pay attention to when installing the power module? Let's take a look!

1. As the first step of installation, Huizhi Electronics believes that it is necessary to stabilize the metal shell of the module power supply to ensure safety, but the shell cannot be connected to the zero line by mistake.

2. Before plugging in at the end of installation, the wiring on each terminal block should be checked and checked again to ensure that the input and output, AC and DC, single-phase and multi-phase, positive and negative electrode, working voltage value and current are accurate, so as to avoid the occurrence of wrong connection and wrong insertion.

3. For high-power power supply, there are generally 2 or more "+" output terminals and "-" output terminals. In fact, they belong to the same output electrode, but in order to make it easy for the customer to wire, they are connected together internally.

4. In order to achieve full heat dissipation effect, the module power supply should be installed in a part with better gas convection. Generally, when the working current of the linear power supply is above 4A, or the working current of the switching power supply is above 7A, forced air cooling should be installed. In addition, no other objects are allowed to be placed on the module power supply housing.

5. For the high-voltage module power supply, the high-voltage danger area should not be touched during the application process and within 10 minutes after the power failure.

6. The module power supply cannot be forcibly disassembled and assembled, and it will be broken if it is forcibly disassembled.

Power modules are power supplies that can be mounted directly on a printed circuit board and feature power supply to roll-specific integrated circuits (ASICs), digital signal processors (DSPs), microprocessors, memory, field-programmable gate arrays (FPGAs), and other digital or analog loads. Power modules are widely used in switching equipment, access equipment, mobile communications, microwave communications, optical transmission, routers and other communication fields, automotive electronics, aerospace, etc.

Related Notes:Due to the high working efficiency of the switching power supply, it can generally reach more than 80%, so in the selection of its output current, the most large absorption current of the electrical equipment should be accurately measured or calculated, so that the selected switching power supply has a high performance ratio, and the output calculation formula is usually as follows:

is=kif

Where: is - the rated output current of the switching power supply;

if—the maximum residual current sucked by the electrical equipment;

k—margin coefficient, generally taken.

No.

A power supply is a device that converts other forms of energy into electrical energy and provides electrical energy to electrical circuits (electronic devices).

The power supply is based on the principle of "magnetic electricity", and is composed of renewable energy such as hydropower, wind power, ocean tide, dam water pressure difference, and solar energy.

and burning coal, oil residue, etc. to generate electricity**.

A common power source is a dry cell battery (direct current.

with household 110V-220V AC.

Source. Generators can turn mechanical energy.

Converted into electrical energy, dry cell batteries can turn chemical energy.

Converted into electrical energy. The generator and the battery itself are not charged, its two poles have positive and negative charges, and the voltage is generated by the positive and negative charges (the current is formed by the directional movement of the charge under the action of voltage), the charge conductor is already there, and the current needs to be added to generate the voltage.

Dry batteries, etc., are called power supplies. through transformers and rectifiers.

A device that converts alternating current into direct current is called a rectifier power supply. The electronic device that provides the signal is called the signal source. The transistor can amplify the signal sent from the front, and then transmit the amplified signal to the circuit behind.

The transistor can also be regarded as a signal source for the later circuits. Integer round current power supply and signal source are sometimes called power supply.

The power supply is a device that provides power to electronic devices, also known as a power supply device, which provides the electrical energy required by all parts of the computer. Whether the power of the power supply, current and voltage are stable or not will directly affect the working performance and service life of the computer.

1. Under the same conditions.

The transmission current of the wireless module is different for different antennas, but the difference is not too big. Assuming that the power supply voltage is consistent with the working voltage of the module, the maximum instantaneous current needs to be greater than the module transmit current, and usually, some margin needs to be reserved.

2. To ensure the stability of the power supply, the smaller the power ripple, the better, usually, 100 millivolts.

3. If the DC power supply voltage is too high, and it is converted to the working voltage of the module through the DC-DC circuit, it is recommended to add TVS at the output end of the DC-DC circuit to suppress the power pulse.

At present, most of the module power supplies are positioned in the high-end market, at least above 500W, and the workmanship is absolutely exquisite, and the interface module is also very fine. However, frequent plugging and unplugging will still lead to damage to the interface and poor contact, so it is recommended that users try to prevent frequent plugging and unplugging when using.

Of course, for beginners with little experience, it is not easy to connect the power cord with the modular power supply. According to the author's understanding, the interface of the modular power supply is partially covered by patents, and other manufacturers cannot design the modular power supply according to the same specifications.

This has led to many mechanical and electrical manufacturers having to "stand out from the crowd" and "seek characterization" in the design of module power supplies, and finally form a situation of "a hundred flowers blooming, a hundred flowers blooming". However, the primitive modular interface has become a problem that consumers need to pay attention to.

First of all, some module power interface cables on the market are not divided into positive and negative, this situation is easier to operate, but more is the middle of the interface line is like but incomplete like the same situation, it is easy to plug in the wrong way, and the consequences of the wrong plug are also very significant - burning the equipment, this situation needs our attention.