Grounding current, also become quiescent current, load regulation (the smaller this value, the stronger the LDO can press the load) linear regulation (the smaller, the input voltage has less influence on the output voltage, the better the LDO function) power supply ratio (PSSR), reflecting the Delixi LDO to the interference signal of the ability to press.
Low-dropout (LDO) linear regulators have low cost, low noise, low quiescent current, few external components, typically only one or two bypass capacitors, and have very low built-in noise and a high PSRR (Power Supply Rejection Ratio). LDO is a miniature system-on-chip (SoC) with very low self-consumption. It can be used for current master channel control, and the chip integrates hardware circuits such as MOSFETs with very low on-line resistance, Schottky diodes, sampling resistors, and voltage divider resistors, and has functions such as over-current maintenance, over-temperature maintenance, fine reference, differential amplifier, and retarder. PG is a new generation of LDOs, which can also be called Power Good, which can also be called "good power supply or stable power supply". Many LDOs only need to connect one capacitor at the input and one output to operate reliably.
The new LDO achieves the following specifications: output noise of 30 μV, PSRR of 60 dB, quiescent current of 6 μA, and voltage drop of only 100 mV. The main reason for the improvement of the function of the LDO linear regulator is that the adjustment tube used in it is a P-channel MOSFET, and the P-channel MOSFET is voltage-driven, which does not require current, which reduces the current consumed by the device itself, and the voltage drop on it is roughly equal to the product of the output current and the on-resistance. Since the on-resistance of a MOSFET is small, the voltage drop across it is very low. Conventional linear regulators use PNP transistors. In circuits where PNP transistors are selected, the voltage drop between the input and output should not be too low to prevent the PNP transistor from entering a saturation condition and reducing the output capacity.
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General parameter setting skills of inverter - Delixi inverter
1. Upper frequency (high speed) SEt - HSP and lower limit frequency (low speed) SEt - LSP
The upper frequency is the frequency corresponding to the *** large given, and the lower frequency is the frequency corresponding to the *** small given. The upper and lower limit frequencies are set to limit the speed of the motor, so as to satisfy the design.
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Delixi inverter alarm parameter check method
1. There is a problem with a frequency converter, it cannot operate and the LED shows "UV" (abbreviation of under voltage), which clarifies that the alarm in the book is DC bus undervoltage. Since the control loop power supply of this type of inverter is not taken from the DC bus, but from the communication input through the transformer alone...
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Delixi inverter selection principle
1. According to the load type, confirm the type of inverter: different load types, speed requirements and power size, the need to choose different types of Delixi inverter. Therefore, it is necessary to understand in detail the type of motor load to be controlled in order to find the most suitable type.
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Delixi bearing rust causes
1. The instantaneous high temperature in the grinding process will make the surface of the workpiece reach a molten state, and the steel surface will react with the oxygen in the air chemically, which will form a very thin (20-30nm) iron oxide film.
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How to solve the data running flight of Delixi inverter controller
Problem depiction:
Delixi inverter controller data flying, or the data is occasionally incorrect, how to solve?
Solution(s):
This is the result of severe disturbances to the controller. Frequently...
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The difference between linear regulator and switching regulator - Delixi
The switching voltage regulator is a different kind of regulated power supply from the linear voltage regulator, and its circuit types mainly include single-ended flyback, single-ended forward, half-bridge, push-pull and full-bridge.
The difference between it and the linear power supply is that the transformer in the circuit does not work at the power frequency, but at the power frequency.
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Delixi time control switch adjustment
Press the revoke function key first, then press and hold the school time function key, then adjust the time and date to the current moment, press the punctual function key again, adjust the time when the demand is closed and open to the specified value, if the demand is set to multiple groups, then press the punctual function key to set, without multiple groups ...
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A brief introduction to Delixi leakage circuit breaker
Delixi leakage maintainer is mainly when the electrical equipment leakage problem to provide maintenance of the device, when the installation of leakage maintainer, should be other devices overcurrent maintenance device. When the fuse is used for short-circuit maintenance, the selection of its standard should be compatible with the on-off of the leakage maintainer. Appear...
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The operating structure of the high-voltage circuit breaker - Delixi
1. Classification of switch operation organization
At present, the switches we encounter are generally divided into many types, such as oil-rich type (old model, now you can't see it at all), oil-poor type (some user stations also have it), SF6, vacuum, GIS (combined electrical appliances) and so on. These are all about the arc extinguishing medium of the switch. ...
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Fault analysis of commonly used voltage electrical appliances - Delixi
1. Voltage circuit breaker problem
The contact is overheated, you can smell the power distribution control cabinet, by checking that the moving contact is not completely inserted into the static contact, and the contact pressure is not enough, resulting in a decrease in the switching capacity, causing the contact to overheat. At this moment, it is necessary to adjust the operating organization so that the moving contact is completely inserted into the static contact ...
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Problems affecting the normal operation of the inverter - Delixi
Seriously affect the normal operation of the inverter. The core components of the inverter are IGBT power semiconductor switching components. When they are working properly, they generate a lot of heat. If there is no fan forced cooling, the sensing head will immediately detect (IGBT) overheating (IGBT) and send it ...
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Basic knowledge of switching regulators - Delixi
1. What is a switching regulator?
Switching regulator, English (regulatior), some people call it a regulator, a voltage regulator source. Completing voltage stabilization is the demand control system (negative feedback), from the automatic control theory we know that when the voltage rises, it will be lowered through negative feedback, ...
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Delixi time control switch adjustment method
Press the undo function key first, then press and hold the school time function key, then adjust the time and date to the current moment, press the punctual function key again, adjust the time that needs to be closed and open to the specified value, if you need to set multiple groups, then press the punctual function key to set, without multiple groups ...
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Delixi switching regulator basics
1. What is a switching regulator?
Switching voltage regulators, some people call it regulators, voltage regulator sources. Complete voltage regulation, is the demand control system (negative feedback), from the automatic control theory we know that when the voltage rises, it will be lowered through negative feedback, and when the voltage drops, it will be ...
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Delixi occasion to choose the inverter
We need to ensure that the capacity of the inverter is matched. First of all, according to the nature of the load, the correct selection of the type of inverter.
When selecting the inverter, the current value of the actual motor should be used as the basis for the selection of the inverter, and the rated power of the motor can only be used as a reference. Secondly, the output of the inverter should be fully considered ...
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The main functions of Delixi regulated power supply
The primary effect of Delixi voltage regulator is, of course, to stabilize the voltage. When the grid voltage fluctuates instantaneously, the regulated power supply will compensate for the voltage amplitude with a response speed of 10-30ms
1. Stable voltage:
Wangwen Shengyi, Delixi stabilizes ...
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Precautions for the use of Delixi leakage protector
1. If the two branch lines are connected, the current in the zero line flows to each other, which destroys the operating current balance in the zero sequence current transformer and causes the leakage maintainer to malfunction. If you want to use the neutral line of the power branch line as the neutral line of the lighting branch line nearby, it will cause the leakage of the power branch line.
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Delixi CDI-EM60 series inverter
Delixi CDI-EM60 series inverter is a high-performance inverter, with the following characteristics and use:
Characteristic:
1. It has good stability and reliability to ensure the stability and safety of the system operation.
2. High degree, wide range of speed control, ...
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Product features of Delixi equalizer
1. The divider is the sixth generation of intelligent machine using microcomputer chips, and the intelligent program is very high.
2. Single-phase three-phase connection, the divider on the market is scored as A, B, and C three-phase wiring for three-phase electricity, which is not only inconvenient for installation, but also prone to phase sequence errors.
3. Can ...
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Servo motor failure analysis - Delixi
Three-phase communication servo motors are widely used, but after long-term operation, various problems will occur. Timely identification of the cause of the fault and corresponding treatment is an important task to prevent the spread of the fault and ensure the normal operation of the equipment.
One...
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