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.
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