Circuit Diagram

Multifunction Charger Nine

Published:2011/5/19 9:29:00 Author:Michel | Keyword: Multifunction Charger Nine

The multifunction charger introduced in the example uses switching power supply and has the functions of charging indication and discharging.Its maximum output current is about 300mA and it can charge nickel-pick,nickel-hydrogenlithium ion batteries.Circuit's Work PrincipleThis multifunction charger consists of oscillation suppression switching power supply circuit,protection circuit ,charging circuit ,discharging circuit,charging circuit and indication circuit and it is showed as the picture 5-71.The oscillation suppression switching power supply circuit is composed of diode ,VD1-VD6,switching tube V2,resistor,R3-R6,capacitor,C2 andswitching pulse transformer,T.   (View)

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Multifunction Charger Ten

Published:2011/5/19 9:33:00 Author:Michel | Keyword: Multifunction Charger Ten

This example introduces one multifunction automatical battery charger.Besides charging nickel-cadmium battery,this charger also can provide low capacity lead-acid and plain dry cells supplementary charging and still can be used as stabilized voltage supply. Circuit's Work Principle The charger is composed of stabilized voltage supply circuit,timer,impulsator,charger circuit and control circuit and it is showed as the picture 5-72.The stabilized voltage consists of mains switch,S1,fuse plug,mains transformer,T,power indication LED,VD1,commutation diode,VD1-VD4,three-terminal voltage regulation IC,IC1,potentiometer,RP1,ammeter,PA,voltmeter,PV,resistor,R1 and R2,capacitor,C1and diode,VD5 and VD6.   (View)

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Lithium-ion Battery Charger One

Published:2011/5/19 22:17:00 Author:Michel | Keyword: Lithium-ion Battery Charger, One

The lithium-ion rechargeable battery charger introduced in the example charges in constant voltage and current way.It is suitable for 3.6V lithium ion battery charging which are used in kinds of mobile phones. Circuit's Work Principle The lithium-ion rechargeable battery charger consists of battery charger circuit,charging control circuit and protection circuit and it is showed as the picture 5-73.Power supply circuit is composed of mains transformer,T,rectifier bridge,UR and filter capcitor,C6. Charging control circuit consists of special intergrated circuit,IC,resistor,R1-R3,capacitor,C1-C5,diode,VD1-VD3 and inductor.   (View)

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Lithium-ion Battery Charger Two

Published:2011/5/19 22:12:00 Author:Michel | Keyword: Lithium-ion Battery Charger , Two

The lithium-ion rechargeable battery charger introduced in the example is made from new type intelligent charging special IC,SC801.It has the functions of overvoltage,overcurrent,overtemperature protection and charging status indication which can choose charging mode according to the batteries and stop charging when the batteries are fully charged automatically. Circuit's Work Principle The circuit of this lithium-ion rechargeable battery charger consists of power supply circuit and charging control circuit and it is showed as the picture 5-74.Power supply circuit is made of mains switch,S1,mains transformer,T and rectifier bridge,UR and filter capcitor,C1.   (View)

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Lithium-ion Battery Charger Four

Published:2011/5/19 22:17:00 Author:Michel | Keyword: Lithium-ion Battery Charger, Four

The ionicbond battery charger introduced in the example is made from 555 time-base intergrated circuit.This charger can automatically switch the constant current and voltage charging.That's to say,the charger uses constant charging when the battery's voltage islower than 4.2V and it adopts constant voltage and low current(60mA) charging mode when the battery's voltage reaches 4.2V so there is no overcharging. Circuit's Work Principle The lithium-ion battery charger is composed of power supply circuit,charging circuit and control circuit and it is showed as the picture 5-76.   (View)

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Load Power Adjustor Four

Published:2011/5/22 0:49:00 Author:Michel | Keyword: Load Power Adjustor, Four

The simple load power adjustor introduced in the example has four gears power regulation function which can be used to control electric chafing dish and small electric pad's power.Circuit's Work Principle The simple load power adjustor circuit is composed of thyristor,VT,diode,VD1and VD2,bidirectional trigger diode,V,LED,VL1and VL2,capacitor,C1 and C2,resistor,R1-R8,power selection switch,S and electric heater,EH and it is showed as the picture 5-57.When regulation power selects switch,S' gear,the Capacitor,C1's charging and discharging speed is changed so that thyristor's angle of flow will be altered too.   (View)

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D. C. Regulated Power Supply of High Voltage Two

Published:2011/6/3 3:52:00 Author:Michel | Keyword: High Voltage, D. C., Regulated Power Supply, Two

The high voltage D. C. regulated power supply circuit introduced in the example uses floated voltage regulating pattern and its output voltage is 1000V and output current is 100mA.It can be used in high-voltage instruments and meters. Work's Principle of the Circuit The high voltage D. C. regulated power supply circuit is composed of input converting circuit and voltage regulation output circuit and it is showed as the picture 5-36.The input converting circuit consists of mains switch,S,fuse,FU,mains transformer,T,rectifier bridge,UR and commutation diode,VD1-VD4.The voltage regulation output circuit consists of integrated regulator,IC1,IC2,transistor,V1,V2,voltage regulator diode,VS,capacitor,C1-C8 and resistor,R1-R6.   (View)

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Numerical Control D. C. Regulated Power Supply Thirteen

Published:2011/6/2 11:11:00 Author:Michel | Keyword: Numerical Control, D. C., Regulated Power Supply, Thirteen

The numerical control D. C. power-supply circuits-fixed introduced in the example only uses one touch electrode and its magnitude of output voltage are divided into 8 grades,namely,3V,4.5V,5V,6V,7.5V,9V,12V and 15V.Its maximum current is 2A. Work's Principle of the Circuit The numerical control D. C. power-supply circuits-fixed consists of constant voltage control circuit and touch control circuit and it is showed as the picture 5-30.The constant voltage control circuit is composed of mains switch,S,fuse,FU1,FU2,mains transformer,T,commutation diode,VD1-VD4,capacitor,C1-C4,C6,resistor,RO,R1,voltage regulator diode,VS and three-terminal integrated regulator,IC1.   (View)

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Numerical Control D. C. Regulated Power Supply Tweleve

Published:2011/6/2 11:11:00 Author:Michel | Keyword: Numerical Control, D. C., Regulated Power Supply, Tweleve

The numerical control D. C. power-supply circuits-fixed introduced in the example controls the magnitude of the voltage by touching the sheet metal by fingers.Its magnitudeof the output voltage are divided into 8 gardes ,namely,1.5V,3V,4.5V,6V,7.5V,9V and 12V which uses LED to indicate and it's convenient. Work's Principle of the Circuit The numerical control D. C. power-supply circuits-fixed is composed of trigger generator circuit and counter,encoder,,switch control circuit and constant voltage and it is showed as the picture 5-31. The trigger generator circuit consists of touching sheet metal,A1,A2,NOT-gate IC1(D1-D4),NOT-gate IC,IC2(D5,D6),resistor,R1-R4,capacitor,C1-C4.   (View)

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Numerical Control D. C. Regulated Power Supply Eleven

Published:2011/6/2 11:10:00 Author:Michel | Keyword: Numerical Control, D. C., Regulated Power Supply, Eleven

The numerical control D. C. power-supply circuits-fixed introduced in the example only uses one touch electrode and its magnitude of output voltage are divided into 8 grades,namely,3V,4.5V,5V,6V,7.5V,9V,12V and 15V.Its maximum current is 2A. Work's Principle of the Circuit The numerical control D. C. power-supply circuits-fixed consists of constant voltage control circuit and touch control circuit and it is showed as the picture 5-30.The constant voltage control circuit is composed of mains switch,S,fuse,FU1,FU2,mains transformer,T,commutation diode,VD1-VD4,capacitor,C1-C4,C6,resistor,RO,R1,voltage regulator diode,VS and three-terminal integrated regulator,IC1.   (View)

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Numerical Control D. C. Regulated Power Supply Ten

Published:2011/6/2 11:09:00 Author:Michel | Keyword: Numerical Control, D. C., Regulated Power Supply, Ten

The output voltage of the numerical control D. C. power-supply circuits-fixed introduced in the example are divided into 8 grades,namely,3V,4.5V,5V,6V,7.5V,9V,l2V and l5V.Its maximum current is 2A. Work's Principle of the Circuit The numerical control D. C. power-supply circuits-fixed consists of constant voltage control circuit and touch control circuit and it is showed as the picture 5-29. The constant voltage control circuit is composed of mains switch,S,fuse,FU,mains transformer,T,rectifier bridge,UR,filter capacitor,C1 and five-terminal adjustable integrated regulator,IC2.The touch control circuit is composed of touch electrode slice,A1-A8,resistor,R1-R6,transistor,V1-V8 and electronic switching IC,IC2.   (View)

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Numerical Control D. C. Regulated Power Supply Nine

Published:2011/6/2 11:08:00 Author:Michel | Keyword: Numerical Control, D. C., Regulated Power Suppl, Nine

The output voltage of the numerical control D. C. power-supply circuits-fixed introduced in the example is from +1.5V to 12V with 8 adjustable grades and its maximum current is 1.5A. Work's Principle of the Circuitnumerical control D. C. power-supply circuits-fixed consists of +12V voltage constant voltage control circuit,voltage control or indication circuit and constant voltage output circuit and it is showed as the 5-28 picture. The +12V voltage constant voltage control circuit consists of mains switch,SO,mains transformer,T,rectifier bridge,UR,resistor,RI,voltage regulator diode,VS,and filter capacitor,C1,C2,C7.The voltage control or indication circuit is composed of reset button,S1,control button,S2,resistor,R2-R6,regulation resistance,RP and capacitor,C5,C6,C8   (View)

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Numerical Control D. C. Regulated Power Supply Eight

Published:2011/6/2 11:07:00 Author:Michel | Keyword: Numerical Control, D. C., Regulated Power Supply, Eight

The numerical control D. C. power-supply circuits-fixed introduced in the example uses control buttons and digital IC and it adopts LED to indicate the magnitude of the output voltage which has 8 grades.Its maximum current is 1.5A. Work's Principle of the CircuitThe numerical control D. C. power-supply circuits-fixed is composed of +12V voltage constant voltage control circuit,voltage control indication circuit and constant voltage output circuit and it is showed as the 5-27 picture. The +12V voltage constant voltage control circuit consists of mains transformer,T,rectifier bridge,UR,filter capacitor,C1,C2,C6,C7 and three-terminal integrated regulator,IC1.   (View)

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Numerical Control D. C. Regulated Power Supply Seven

Published:2011/6/2 11:03:00 Author:Michel | Keyword: Numerical Control, D. C., Regulated Power Supply, Seven

The numerical control D. C. power-supply circuits-fixed introduced in the example uses digital IC to control the power-supply circuits-fixed and the user adopts two buttons to regulate the magnitude of the voltage conveniently. Work's Principle of the Circuit The numerical control D. C. power-supply circuits-fixed consists of +12V voltage constant voltage control circuit,voltage control circuit and constant voltage output circuit and it is showed as the 5-26 picture.+12Vvoltage constant voltage control circuit is composed of mains switch,SO,mains transformer,T,rectifier bridge,UR,filter capacitor,C1-C3 and three-terminal integrated regulator,IC1.   (View)

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Numerical Control D. C. Regulated Power Supply Five

Published:2011/6/2 10:58:00 Author:Michel | Keyword: Numerical Control, D. C., Regulated Power Supply, Five

The numerical control D. C. power-supply circuits-fixed introduced in the example uses control button to choose output voltage (range:1.5-15V)and adopts LED to indicate the magnitude of voltage,which is convenient and intuitionistic. Work's Principle of the Circuit The numerical control D. C. power-supply circuits-fixed is omposed of power-supply circuits-fixed and ouput voltage control circuitand it is showed as the picture 5-24. The power-supply circuits-fixed consists of mains switch,S1,mains tranformer,T,rectifier bridge,UR,capacitor,C1-C3，three-terminal integrated regulator,IC1and IC2 and resistor,RO-R1O.   (View)

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Load Power Adjustor Eight

Published:2011/5/22 0:40:00 Author:Michel | Keyword: Load Power Adjustor, Eight

The load power adjustor introduced in the example has the functions of stepless voltage regulation,overload and overvoltage protection which can be used to adjust light,speed and temperature etc. Circuit's Work PrincipleThe bearing power adjustor consists of voltage regulation circuit,overload test circuit and protection control circuit and it is showed as the picture 5-61.The voltage regulation circuit is composed of potentiometer,RP3,resistor,R6 and R7,capacitor,C2,bidirectional trigger diode,V4 and thyristor,VT2.   (View)

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Load Power Adjustor Seven

Published:2011/5/22 0:39:00 Author:Michel | Keyword: Load Power Adjustor, Seven

The load power adjustor introduced in the example has simple circuit without obstruction.It divides the bearing power into ten gears(10%-100%) which can be used to adjust electric iron,electric stove and platen heater's power. Circuit's Work PrincipleThe bearing power adjustor ciruit is composed of power supply circuit,schmitt trigger,counter,allotter,RS trigger and control operation circuit and it is showed as the picture 5-60.The power supply circuit consists of diode,VD1-VD5,current-limiting resistor, R1and R2,voltage regulator diode VS1-VS3 and capacitor,C1 and C2.   (View)

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Load Power Adjustor Three

Published:2011/5/22 0:53:00 Author:Michel | Keyword: Load Power Adjustor, Three

The four-gear load power adjustor introduced in the example is composed of CMOS IC.This adjustor can be used to regulate electronic oven,electric iron,electronic cooker,electric iron's tempreature or fun's speed. Circuit's Work PrincipleThe load power adjustor circuit is composed of input controller,electronic switching,astable multivibrator and control operation circuit and it is showed as the picture 5-56.The input controller consists of counter,allotter IC,IC1,control button,S,resistor,R1 and R2,LED,VL1-VL5.   (View)

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Load Power Adjustor Two

Published:2011/5/22 0:49:00 Author:Michel | Keyword: Load Power Adjustor, Two

Theload power adjustor introudced in the example is composed of special adjusting power IC.It has the features of simple circuit,stabilization and dependablity,many adjustale gears and obvious indication.It can be used to regulate power appliances' temperature such as electronic oven,electric cooker,electric iron's tempreature and also can regulate fun and low-power single phase motor's speed. Circuit's Work Principle The bearing power adjustor is composed of power supply circuit and load power regulation circuit and it is showed as the picture 5-55.   (View)

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AC Voltage Regulator Fourteen

Published:2011/6/3 8:13:00 Author:Michel | Keyword: AC, Voltage Regulator, Fourteen

The AC voltage regulator introduced in the example has the functions automatical voltage regulation and overvoltage protection.Its input voltage range is 150-240V,output voltage is 220V±l0V and output power is 500W. Circuit's Wrok Principle The rgulator circuit is composed of voltage test control circuit,boosting or dropping voltage circuit and overvoltage protection circuit and it is showed as the picture 5-53. The voltage test control circuit consists of transformer T,communication diode VD1,VD2,capacitor C1-C3,transistor V1-V3,resistor,R1-R4,potentiometer RP1,RP2 and LED VL1 and relay K1.   (View)

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