Linear power supply profile:
Linear power supply first after AC transformer to reduce the voltage amplitude, and then after a rectifier circuit rectifiering, to obtain pulsed DC power supply, then after filtering to DC voltage with a small ripple factor. To achieve high-precision DC voltage,have to through stabilized voltage circuit for stabilization.
DC power supply Category:
DC power supply classified as: linear DC power supply and high-frequency switching power supply.
Linear power supply work principle:
Linear power supply main circuit working process: input power supply by a preliminary exchange of AC power for stabilization after via pre-regulator circuit, by main work transformer isolation rectifier into DC power, and then through the control circuit and intelligent single-chip microprocessor controller under the control of linear adjustment element fine adjustment,then get high precision output DC voltage source.
Our linear power supply advantages:
1, Power transformer and rectifiering: make AC 380V (415V, 440V, 220V) converted into direct current required.
2, The pre-regulator circuit: adopt relay elements or thyristors, make input AC or DC voltage preliminary pre-adjustment, thereby reducing the power consumption of the linear adjustment element, improve efficiency and ensure high precision output voltage source. and high stability.
3, Linear adjustment element: DC voltage after filtereing to fine-adjustment, then input voltage reaches the desired value and accuracy requirements.
4, Waveform filter circuit: maximum stop absorption on DC power supply pulse wave, interference, noise, to ensure the output voltage of the DC power supply with good results low ripple and low noise, low interference.
5, Microprocessor control system: single-chip microprocessor controller for various signals detected by comparing judgment, calculation, analysis, processing, and then send the corresponding control command to make the overall voltage DC power supply system is working properly and reliably ,coordination.
6, Auxiliary power supply and reference voltage source: reference voltage source provide high-precision DC power system for and power needed for electronic circuitry work.
7, Voltage sampling and voltage regulator: detecting DC stabilization power supply output value and adjust the output DC voltage power supply.
8, Compare amplifier circuit: compare output voltage value of the DC power supply and a reference voltage source to get error voltage signal, then amplifying feedback and control linear rectifier adjustment element to ensure the stable output voltage.
9, Current detection circuit: get DC power supply stabilization current value, as output current limiting protection or control information.
10, Liner power supply drive circuit: drive element is executable provided the power amplifier circuit.
11. Display: Display DC power supply output voltage value and output current value.