Circuit Diagram

24V regulated power supply circuit with current compensation

Published:2011/4/7 1:56:00 Author:Nicole | Keyword: 24V regulated power supply, current compensation

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CFL electron ballast circuit composed of MPIC2151P and PowerLuxTM IGBT

Published:2011/4/2 3:25:00 Author:may | Keyword: electron ballast, PowerLuxTM IGBT

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5V regulated power supply circuit with short circuit protection

Published:2011/4/7 1:57:00 Author:Nicole | Keyword: 5V regulated power supply, short circuit protection

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Reduced series resonant inverter main topological structure with resonance pole capacitor buffer

Published:2011/4/7 4:41:00 Author:may | Keyword: series resonant inverter, topological structure, resonance pole, capacitor buffer

Series resonant inverter with resonance pole capacitor buffer’s process of changing current: Routine RCVD buffer circuit adopts resistor to discharge, with the increase of switch frequency, the power consume in buffer is increase too, greatly reduce the efficiency of the whole inverter system. It can effectively reduce the shutoff loss of switch device that directly parallel connect a non-loss buffer capacitor between IGBT collector and emitter. It is more fit for high frequency inverter to feedback the power of the resistor loss in routine buffer to load or power supply.   (View)

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5V regulated power supply circuit with over cut protection

Published:2011/4/7 1:59:00 Author:Nicole | Keyword: 5V regulated power supply, over cut protection

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Steady voltage circuit with overcurrent protection

Published:2011/4/7 2:01:00 Author:Nicole | Keyword: steady voltage, overcurrent protection

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24V regulated power supply circuit with current limiting protection

Published:2011/4/7 2:06:00 Author:Nicole | Keyword: 24V regulated power supply, current limiting protection

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0～15V regulated power supply circuit with current limiting protection

Published:2011/4/7 2:07:00 Author:Nicole | Keyword: 0～15V regulated power supply, current limiting protection

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Single-phase topological structure of cascade connection multilevel inverter basing on star point clamp type

Published:2011/4/7 4:23:00 Author:may | Keyword: Single-phase topological structure, cascade connection, multilevel inverter, star point clamp type

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High voltage frequency conversion power supply

Published:2011/4/7 4:18:00 Author:may | Keyword: High voltage, frequency conversion, power supply

The main circuit of high voltage frequency conversion power supply adopts alternate-direct-alternate voltage type circuit. Bridge type inverter circuit consists of high power full control type power electronic device IGBT. The control circuit uses pulse width (PWM) technology and SCM (80196KB) control technology. 1, IGBT drive circuit 2, control circuit block diagram:   (View)

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IGBT shut off voltage wave and chopper circuit in advanced hard switching chopper circuit

Published:2011/4/7 4:05:00 Author:may | Keyword: IGBT shut off voltage wave, chopper, hard switching chopper

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Practical soft-start circuit in switching power supply

Published:2011/4/7 2:22:00 Author:Nicole | Keyword: soft-start, switching power supply

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Integrated protection circuit with UCE increasing in IGBT short cut and current sensor detection

Published:2011/4/2 3:38:00 Author:may | Keyword: Integrated protection, UCE enlarging, IGBT short cut, current sensor detection

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The circuit and shutoff wave in two reverse blocking type IGBT reverse parallel connection

Published:2011/4/7 4:05:00 Author:may | Keyword: reverse blocking type, IGBT, reverse parallel connection, shutoff wave

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The package of Mitsubishi IPM

Published:2011/4/7 20:48:00 Author:may | Keyword: Mitsubishi,

IPM is advanced hybrid integrated power device. It is integrated high-speed, low power consumption IGBT chip and optimal grid drive circuit and kinds of protective circuit in one module. Compare to ordinary IGBT, IPM has further increase in system features and reliability. Also, because its conduction losses and switch losses is quite low, the size of radiator is small, so size of the whole system is more small. Moreover IPM internal integrated logic, control, detect ion and protect circuit, the use is convenient, it not only decrease the volume of this system and the development time, also greatly add reliability of the system.   (View)

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Fault prevention ways with two power series(using フ current protection circuit)

Published:2011/4/7 2:35:00 Author:Nicole | Keyword: fault prevention way, two power

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Soft switching schematic circuit diagram

Published:2011/4/2 3:52:00 Author:may | Keyword: soft switching

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Zero-voltage zero-current switch three-level DC converter

Published:2011/4/7 20:34:00 Author:may | Keyword: zero-voltage zero-current switch, three-level DC converter

In order to remove circulating current of zero-voltage switch three-level DC converter in zero state, we come up with kind of zero-voltage zero-current switch three-level DC converter circuit. The circuit is shown in the following diagram 1, the main difference between this circuit and zero-voltage switch three-level DC converter is: add coupling capacitance C55 and add pilot switch SAUX and clamp capacitance CAUX in transformer secondary winding; coupling capacitance C55 separately connect the switch process of outer outer-side tube VT1, VT4 and in side tube VT2, VT3. 2, this circuit adopts blocking capacitor as blocking voltage source, let transformer once side current decrease to zero in zero state, thereby achieve zero current switch of in side switch tube. 3, This diagram separately series diode VT2 and VT3 in branch circuit of VT2 and VT3 in order to prevent the transformer once side current to continue flow in negative direction in zero state. It removes the minus effect after adding saturated inductance.   (View)

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Lithium ion battery charging and system load power up schematic diagram

Published:2011/4/7 2:39:00 Author:Nicole | Keyword: lithium ion battery, charging, system load

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Lithium ion battery equivalent circuit

Published:2011/4/7 3:01:00 Author:Nicole | Keyword: lithium ion battery

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