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Ringing switching power supply practical circuit

Published:2011/7/15 22:44:00 Author:Christina | Keyword: Ringing, switching power supply, practical circuit

Ringing switching power supply practical circuit
The ringing switching power supply practical circuit is as shown in the figure. The primary winding Np of the transformer is connected with the diode VD, the resistance R and capacitance C, the purpose of this connection method is to release the power of the transformer leakage inductance. That is during the conduction of the switching tube, the current accumulates the power on the leakage inductance, but this power is not transfered to the secondary stage of the transformer as the electric power. So it produces the reverse emf when the switching tube is cutting off, there is the high surge voltage to puncture the switching tube.   (View)

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Monitoring Other Voltage Circuit

Published:2011/7/16 21:14:00 Author:Robert | Keyword: Monitoring, Voltage

Monitoring Other Voltage Circuit
The picture shows the monitoring other voltage circuit.   (View)

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Monitoring 5V Voltage Circuit Composed Of NJM2103

Published:2011/7/16 21:20:00 Author:Robert | Keyword: Monitoring, 5V, Voltage

Monitoring 5V Voltage Circuit Composed Of NJM2103
The picture shows the monitoring 5V voltage circuit composed of NJM2103.   (View)

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-500~0V High-Power Operational Amplifier Circuit

Published:2011/7/17 1:34:00 Author:Robert | Keyword: High-Power, Operational Amplifier

-500~0V High-Power Operational Amplifier Circuit
The picture shows the -500~0V high-power operational amplifier circuit.   (View)

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Single-Phase Electronic Prepaid Watt-Hour Meter Design Circuit

Published:2011/7/17 7:47:00 Author:Robert | Keyword: Single-Phase, Electronic, Prepaid, Watt-Hour Meter, Design

Single-Phase Electronic Prepaid Watt-Hour Meter Design Circuit
The picture shows the single-phase electronic prepaid watt-hour meter design circuit.   (View)

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Daily Work Transaction Processing Flow Diagram Circuit

Published:2011/7/16 21:30:00 Author:Robert | Keyword: Daily Work, Transaction, Processing, Flow Diagram

Daily Work Transaction Processing Flow Diagram Circuit
The picture shows the daily work transaction processing flow diagram circuit.   (View)

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Clock Circuit Main Program Flow Diagram Circuit

Published:2011/7/16 21:22:00 Author:Robert | Keyword: Clock, Program, Flow Diagram

Clock Circuit Main Program Flow Diagram Circuit
The picture shows the clock circuit main program flow diagram circuit.   (View)

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RTC-4553 Pin And Its Peripheral Circuit

Published:2011/7/16 21:27:00 Author:Robert | Keyword: Pin, Peripheral

RTC-4553 Pin And Its Peripheral Circuit
The picture shows the RTC-4553 pin and its peripheral circuit.   (View)

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Over-Voltage Alarming Circuit By Using LT1073

Published:2011/7/16 9:13:00 Author:Robert | Keyword: Over-Voltage, Alarming

Over-Voltage Alarming Circuit By Using LT1073
The picture shows the over-voltage alarming circuit by using LT1073.   (View)

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SA9904 Pin And Peripheral Circuit

Published:2011/7/16 9:03:00 Author:Robert | Keyword: Pin, Peripheral

SA9904 Pin And Peripheral Circuit
The picture shows the SA9904 pin and peripheral circuit.   (View)

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Communication Serial Port Multiplexing Circuit

Published:2011/7/16 21:26:00 Author:Robert | Keyword: Communication, Serial, Port, Multiplexing

Communication Serial Port Multiplexing Circuit
The picture shows the communication serial port multiplexing circuit.   (View)

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Multifunctional Energy Meter Overall Structure Circuit

Published:2011/7/17 7:10:00 Author:Robert | Keyword: Multifunctional, Energy, Meter, Overall, Structure

Multifunctional Energy Meter Overall Structure Circuit
The picture shows the multifunctional energy meter overall structure circuit.   (View)

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Driving Circuit By Using Speed-Up Capacitor

Published:2011/7/16 9:32:00 Author:Robert | Keyword: Driving, Speed-Up Capacitor

Driving Circuit By Using Speed-Up Capacitor
The picture shows the driving circuit by using speed-up capacitor.   (View)

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500 Type Multimeter Circuit Principle Instrumetation Circuit

Published:2011/7/16 10:15:00 Author:Robert | Keyword: Multimeter, Principle, Instrumetation

500 Type Multimeter Circuit Principle Instrumetation Circuit
The picture shows the 500 type multimeter circuit principle instrumetation circuit.   (View)

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One Normal Type Driving Circuit

Published:2011/7/16 9:08:00 Author:Robert | Keyword: Normal, Driving

One Normal Type Driving Circuit
The picture shows the one normal type driving circuit.   (View)

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Ringing switch power supply over-current protection circuit

Published:2011/7/15 22:32:00 Author:Christina | Keyword: Ringing switch, power supply, over-current, protection circuit

Ringing switch power supply over-current protection circuit
In the ringing current-limit switching power supply, the output current Io has no corresponding relationship with the primary stage current Ic. For the same collector electrode current Ic, with the rise of the input voltage, the Io will increase too. So in the ringing type switching circuit, in addition to use the start protection measures, we also need to set the protection circuit which is as shown in the figure. We add the RA and RB on the base subcircuit of VT2. Because the voltage of C3 is the positive polarity voltage which is proportional to the input voltage, so if the input voltage Vi rises, the current which flows through the resistance RA will increase to accelerate the conduction of VT2.   (View)

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Brushless DC Motor Driving Circuit

Published:2011/7/17 7:12:00 Author:Robert | Keyword: Brushless, DC, Motor, Driving

Brushless DC Motor Driving Circuit
The brushless DC motor driving circuit is shown in the picture.   (View)

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Power Rectifier Protector Circuit

Published:2011/7/17 7:15:00 Author:Robert | Keyword: Power, Rectifier, Protector

Power Rectifier Protector Circuit
The picture shows the power rectifier protector circuit.   (View)

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Over-Voltage Adjustable Protection Circuit

Published:2011/7/16 9:41:00 Author:Robert | Keyword: Over-Voltage, Adjustable, Protection

Over-Voltage Adjustable Protection Circuit
The picture shows the over-voltage adjustable circuit.   (View)

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Simple And Reliable Commercial Power Over-Voltage Protector Circuit

Published:2011/7/17 8:07:00 Author:Robert | Keyword: Simple, Reliable, Commercial Power, Over-Voltage, Protector

Simple And Reliable Commercial Power Over-Voltage Protector Circuit
The picture shows the simple and reliable commercial power over-voltage protector circuit.   (View)

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