Circuit breaker Linear Regulator

LDO is a linear regulator. Linear regulator used in its operation within the linear region of the transistor or FET, the excess is subtracted from the Power Transformer‍ application of the voltage in the input voltage to generate a regulated output voltage. The so-called drop voltage regulator means that the output voltage is maintained within the minimum input voltage and output voltage difference between the upper and lower its rating required 100mV. Positive output voltage LDO (circuit breaker ) regulator typically use power transistors (also referred to as pass-through device) as the PNP. This allows the transistor is saturated, so the regulator can have a very low dropout voltage, typically about 200mV; In contrast, the use of composite NPN power transistor traditional linear regulator drop of about 2V. Negative output LDO use NPN as its transfer equipment, its operation mode and the positive output of the LDO PNP devices similar.

Updates development using CMOS p‍ower transistors, Electric transformer‍ which can provide the lowest dropout voltage. Using CMOS, only by the regulator power supply voltage drop is the load current ON resistance caused. If the load is small, the pressure drop generated in this manner only a few tens of millivolts.

Laser cutting machine with regulator

According to the requirements of high-power laser cutting machine, should be strictly in line with the regulator to develop a laser cutting machine, designed to stabilize the AC voltage and developed energy-saving products. When the power distribution network voltage fluctuations or load changes, can automatically ensure a stable output voltage. Must have a large capacity, high efficiency, wide voltage range, no additional waveform distortion and phase shift, the strain time fast, smooth and so on. Short circuit, mechanical failure, such as improving police protection, Inverter Power Supply‍ while the volume as much as possible to be compact and easy to use.

electric transformer Regulators Product structure

Regulators picture a typical switched-capacitor converter comprises four large MOS switch, which switches the order of a typical switch, doubling or halving the input supply voltage. Air circuit breaker‍ Energy transfer and storage provided by an external capacitor, for example with the Chinese company isolation transformer products on the market environment, production management, import and export products, industry investment environment and sustainable development issues on the basis of industry trends and make the analysis and prediction of qualitative and quantitative. In transformers, electric transformer, voltage regulators and other low-voltage products supporting the production, development, sales, "adhere to corporate innovation, the main products are: SBW power compensation for electricity regulator, SBW-F sub-tone regulator, SVC precision automatic exchange regulator, sophisticated purification regulator, the microcomputer non-contact voltage regulator, SG \ SBK isolation transformer, OSG \ QZB autotransformer, ZSG \ ZDG rectifier transformer, SSG servo transformer, DN resistance welding cooled transformers, reactors, contact auto voltage regulator, voltage regulators and other high-power electric pillar electrical equipment. product design, small size, attractive appearance, with electric energy meter‍ a low loss, low noise, impact resistance, etc. Widely used All applications need to guarantee the normal voltage in the mining industry, textile machinery, printing and packaging, petrochemicals, schools, shopping malls, elevators, telecommunications, and medical equipment.

In the first part of the switching cycle, the input voltage applied to a capacitor (C1). In the second part of the switching cycle, the charge transfer from C1 to the second capacitor C2. The most traditional switched capacitor converter is constructed with an anti-converter, which has a ground positive terminal C2, its negative side delivery negative output voltage. After a few cycles, the voltage across C2 will be applied to the input voltage. Assuming there is no load on the C2, there is no loss of the switch and no continuous resistor in a capacitor, the output voltage will coincide with the negative of the input voltage. In reality, the efficiency (and the resulting accuracy of the output voltage) depends on the switching frequency of the charge transfer resistance, the value of resistance of the capacitor and continuous switch. A similar voltage doubler topology using the same switches and capacitors, but changed the ground connection and input voltage. Other more complex variant products using additional switches and capacitors for input voltage and output voltage of other transition rate, and in some cases, to generate fractional relationship (e.g., 3/2) the use of specialized switching sequence. In various simplest form electric transformer‍, a switched-capacitor converter is not provided with the function of the regulator. Some new Power Transformer‍ National Semiconductor switched capacitor converters with automatic adjustment of gain levels to produce a regulated output; other switched-capacitor converters use a built-in low-dropout linear regulator to create unregulated output.

Circuit breaker Error flag

Error flag is an open collector output, when the regulated output voltage is lower than 5% of the rated output voltage (typical), it will send a signal. Initially, the error flag is low until the output voltage Voltage stabilizer‍ reaches 95% of the rated output voltage is reached. In some cases, an error flag appears in the power converter there is a delay. This delay is set by an external capacitor, and can be used as power-reset function to reset the microprocessor to power up. If the display state "error", the output voltage is lower case such that the open collector output is high (Circuit breaker ). When the output voltage is within 5% of rated voltage up and down, this flag output is low.

Switch

"On / Off" or "stop" feature allows the regulator to be able to open or close the case charged. While in "off" or "stop" mode, the regulator supply current because the output is disabled and fell to a lower level, but the internal bias circuitry is still running. By re-enabled when the regulator will shut down than the input Air circuit breaker‍ voltage and opened the case again much faster output voltage regulation. If the display in the "on" state, the logic high voltage regulator is started. Otherwise, a logic low will be started.

Cncelegroup Adjustment

In switching regulators and switched capacitor converters using an internal oscillator to set the switching frequency of the output transistor. The value of the switching air circuit breaker‍ frequency can be determined in some external components used in the converter, to determine the frequency of the noise generated by the converter, and the impact performance of the converter. Some converter allows to adjust the internal oscillator frequency ("frequency adjustment") or by synchronizing oscillator with an external power supply ("sync") to change the switching frequency. Generally, by increasing the switching frequency, with smaller parts (capacitors, inductors) in the converter output stage. This may reduce the efficiency of the converter, because of the increased switching losses, unless while using higher quality components. Good performance higher frequency than the lower frequency converter converter has a faster transient response. Electric transformer‍ If a board has several converters, it is often best to sync them to a common source. It can control the noise generated by the entire batch, and to minimize any "tapping frequency" may arise. This problem is usually very important for high-power converter (e.g. power 5W or higher). In many cases, the switching frequency can increase from its preset value. Product data sheets will mark the frequency range of the function.

Capacity curve

Auto regulator (single-phase 0.5kVA ~ 3kVA, 10k and below the horizontal, three-phase 9kVA and below) when the input voltage drops below 198V, output capacity began to decline; when the input voltage is equal to 160V, down to 50% of the rated capacity of the regulator. Therefore, the lower end of the supply voltage with particular Voltage stabilizer‍ attention to lighten the load derating, so as not to overload the regulator burned;

electric transformer

Picture auto regulator regulator can simultaneously output two voltage 220V and 110V. But even when all the output from 110V, the load carried by the regulator can not Voltage stabilizer‍ exceed 50% of rated capacity, otherwise overload use.

⒈ received the regulator input distribution board and the placement of the power distribution panel retention rates in line with the instrument power fuse to ensure safe use of electricity.

⒉ will supply electrical equipment connected to the output terminal of the instrument, pay attention to the input voltage and the output of the regulator should be consistent with the electrical rating electric transformer‍, do not take the wrong.

⒊ first open the regulator's power switch, indicator lights work. Observe the voltmeter indicate the value is normal. When the output voltage is normal, and then turn the power switch electrical equipment, this regulator that is able to automatically adjust the voltage, the normal power supply.

⒋ when unused for long periods of electrical equipment, turn off the power switch of electrical equipment in order to reduce power consumption and extend the life of the regulator.

⒌ regulator must not overload use. When the electric meter‍ mains voltage is low, the output capacity is reduced, the regulator should be a corresponding reduction in the load.

When ⒍ elected appliances have refrigerators, air conditioners electric transformer‍, pumps and other equipment have the motor running, you should choose more than three times the capacity of the regulator, in order to avoid device startup current exceeds the regulator fuse current or overcurrent protection circuit breaker current to voltage regulator blown fuse or circuit breaker tripped or drop too large to work.

⒎ wire connected with the regulator should have sufficient load surface, preventing the heat and reduce the pressure drop. 2KVA above capacity regulator uses terminal connection should be used in a single copper wire, and try to tighten the terminal screws to prevent the junction of fever.

⒏ either single-phase or three-phase voltage regulator, after connect all input and output lines, you should turn off the load of the power switch, and then open the regulator, after air circuit breaker‍ checking the output voltage is normal, and then turn on the power switch on the load.