1. Vibration circuit: the drainage-source and R4 of the main winding N1 and Q1 of the switching transformer are the channels for the working current of the power supply; R1 provides the starting current; The self-powered windings N2, D1, and C1 constitute the power supply voltage of the vibrating chip. The normal operation of these three links is a prerequisite for the power supply to vibrate.
Of course, PC1's 4-pin external timing components R2 and C2 and the PC1 chip itself also form part of the vibration circuit.
2. Voltage stabilization circuit: N3, D3, C4 and other +5V power supplies, R7-R10, PC3, R5, R6 and other components constitute the voltage stabilization control loop.
Of course, the PC1 chip and the 1 and 2 pin peripheral components R3 and C3 are also part of the voltage regulation circuit.
3. Maintenance loop: The PC1 chip itself and the 3-pin peripheral component R4 constitute an overcurrent maintenance loop; The D2, R6 and C4 components connected in parallel on the N1 winding constitute the maintenance circuit of the IGBT; In essence, the voltage feedback signal of the voltage regulation circuit - the voltage regulation signal can also be regarded as a voltage maintenance signal. However, the content of the maintenance circuit is not limited to the maintenance circuit itself, and the start and control of the maintenance circuit is often caused by the abnormality of the load circuit.
4. Load circuit: N3, N4 secondary winding and subsequent circuits, all of which are load circuits. The abnormality of the load circuit will involve the maintenance circuit and the voltage regulation circuit, so that the two circuits can make corresponding maintenance and adjustment actions.
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LS power production contactor selection
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1. The operator panel is given The operator panel is a simple frequency setting method of the inverter, and the user can directly change the set rate of the inverter through the potentiometer, digital key or rising and descending keys on the inverter operator panel. The big advantage of the operator panel is that it is simple ...
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How does the interference of the frequency converter occur? -- Electricity production
To discuss the disturbance problem of LS inverter, we must first understand the operating principle of inverter, from the structural point of view, inverter is divided into direct inverter and direct inverter. The direct inverter is a communication that directly converts the I frequency current into a controllable frequency, and there is no intermediate DC link. Each phase of it ...
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Wiring method of the main circuit of the inverter - LS power generation
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Introduction to the working principle of LS electric molded case circuit breaker
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LG Inverter-LS Inverter-IGXA Sales
LG Inverter LS Inverter IGXA Series ** for sale, its models are as follows:
SV004IGXA-4 60210101W0 Power 0.37KW (Input: 3-phase 380V / Output: 3-phase 0——380V)
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Analysis of the fault problem of LS power terminal block
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What is the difference between LS inverter and LG inverter?
LS inverter and LG inverter are the same, there is no difference between the two.
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Why can't the inverter be equipped with a leakage protector?
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Interference phenomenon that often occurs in LS power inverters
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3. When the inverter starts the motor, the voltage converter signal is unstable and beats violently;
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How to choose LS contactors
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Contactors play a role in industrial electricity
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After the contactor is energized, the start button continuously engages and disconnects ?—— LS generates power
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How to use the installation wiring of the LS inverter
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(2) Wire diameter selection
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(2) The wiring between the inverter and the motor should consider the line electricity.
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