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Switching-Regulator Circuit

Index 3

45 W multi-output switching power supply circuit diagram composed of TOP246Y

Published:2011/6/27 3:59:00 Author:Ecco | Keyword: 45 W , multi-output , switching, power supply

45 W multi-output switching power supply circuit diagram composed of TOP246Y
It can be used as set-top box, cable decoder, high-capacity hard disk drive or laptop computer switching power supply. The power supply input voltage is AC 185V ~ 265V, and the rated output power is 45W, and the peak output power is up to 60W; power efficiency is η ≥ 75%, no-load power consumption is only 0.6W. Five outputs are: UO1 (5V, 3.2A), UO2 (3.3V, 3A), UO3 (30V, 0.03A), UO4 (18V, 0.5A), UO5 (12V, 0.6A); their load regulation rates are ± 5%, ± 5%, ± 8%, ± 7%, ± 7%. (View)

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STR-M6833BFO4 switch power supply thick film integrated circuit

Published:2011/6/15 7:29:00 Author:chopper | Keyword: switch power supply, thick film, integrated circuit

STR-M6833BFO4 switch power supply thick film integrated circuit
STRM6833BFO4 is a switch power supply thick film integrated circuit produced (View)

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groundwire style circuit

Published:2011/6/12 7:07:00 Author:chopper | Keyword: groundwire

groundwire style circuit
Additionally,line filter which is used to control noise is connected to printed plate at the mains. And then,grounded common mode capacitor is fixed to the soleplate by screw.Lines are short and thick even if the current is not very big. On the printed plate are the lines of sunrise-style,just as the picture.Additionally,when the circuit adopts dual platen,it must switch in washer to guarantee the favorable contact. (View)

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STR-M6831AFO4 switch power supply thick film integrated circuit

Published:2011/6/15 7:41:00 Author:chopper | Keyword: switch power supply, thick film, integrated circuit

STR-M6831AFO4 switch power supply thick film integrated circuit

STRM6831AFO4 is a switch power supply thick film integrated circuit produced (View)

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the line of printed plate should be wide enough when process big current circuit

Published:2011/6/12 7:19:00 Author:chopper | Keyword: line, printed plate, wide, big current

The line of printed plate should be wide enough when we deal with the big current.Generally speaking,line width of 1A current should be 1mm.And we can calculate by this rate.When the current is over 10A,we can calculate by the rate 0.7A/mm.As for the bold line of the following picture,there are biggish impact current through capacitor at the moment the power supply is connected even if the current is not big.Thus,the line should be wide enough. (View)

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STR-M6545LF switching power supply thick film integrated circuit

Published:2011/6/15 7:31:00 Author:chopper | Keyword: switching power supply, thick film

STRM6545LF is a mixed type switching power supply thick film integrated circu (View)

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input voltage of three-terminal integrated regulator measure circuit

Published:2011/6/15 5:44:00 Author:chopper | Keyword: input voltage, three-terminal, integrated regulator, measure

input voltage of three-terminal integrated regulator measure circuit
The following picture is a regulator circuit,the difference of input voltage and output voltage totally adds to the collector and emitter of controlled transistor.The output current is also the collector current of transistor.The power consumption of transistor Pc=I0 (Ui-U0),that is to say,the higher input voltage Vi is,the great power consumption of transistor is.The input voltage Uimin has to satisfy Uimin≥U0+UDROP.In the formula,UDROP is a voltage drop of the emitter and collector of transistor.Its lowest value is over the saturation voltage UCESAT of transistor.The UDROP of general regulator is about 30V,and regulator with low dropout is below 1V. (View)

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STR-S6708 switching power supply thick film integrated circuit

Published:2011/6/15 7:33:00 Author:chopper | Keyword: switching power supply, thick film

STR-S6708 switching power supply thick film integrated circuit
STRS6708 is a mixed type switching power supply thick film integrated circuit (View)

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the protection circuit of power circuit

Published:2011/6/11 21:10:00 Author:chopper | Keyword: protection circuit, power circuit

the protection circuit of power circuit
The current in power circuit is great and wecan adopts fuse,diode,transistor circuit to limit the current.Fuse is the simplest protection component.Picture a,b are the examples of setup method of fuse.The fuse is connected with the protection circuit and loads in series.Classify by fusing time,there are fast type,low type and normal type.We should select appropriate fuse based on the different loads and driving circuit. (View)

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STR-S5708 switching power supply thick film integrated circuit

Published:2011/6/15 7:34:00 Author:chopper | Keyword: switching power supply, thick film

STR-S5708 switching power supply thick film integrated circuit
STRS5708 is a mixed type switching power supply thick film integrated circuit (View)

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printed plate of switch power supply design technique circuit

Published:2011/6/11 22:01:00 Author:chopper | Keyword: printed plate, switch power supply

printed plate of switch power supply design technique circuit
Switch power supply uses high speed switch to control high voltage and great current.If the speed of switch is not fast,the comsuption of transistor will increase and the temperature will ascend.When current changing rate di/dt is comparatively big,it will cause biggish noise voltage.When the inductance of line of printed plate is different,the switch waveform is different.The inductance of line is large,the surge of voltage waveform is large and the step gapof current waveform is large too.Therefor,the lines of switch current should be short and thick to decrease the inductance. (View)

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degree of spoilage of food determinator circuit

Published:2011/6/14 3:18:00 Author:chopper | Keyword: degree of spoilage, food, determinator

degree of spoilage of food determinator circuit
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Furi F24 cassette mechanism switch power supply circuit

Published:2011/6/14 3:22:00 Author:chopper | Keyword: Furi, cassette mechanism, switch power supply

Furi F24 cassette mechanism switch power supply circuit
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STRZ4302 switch power supply thick film integrated circuit

Published:2011/6/14 9:28:00 Author:chopper | Keyword: switch power supply, thick film, integrated circuit

STRZ4302 switch power supply thick film integrated circuit
STRZ4302 is a switch power supply thick film integrated circuit produced by Company Samco,and it is applied to Changhong NEC cassette mechanism,such as G2967,PF29488,G2898 large-screen colour TV.1.function characteristicsSTRZ4302 integrated circuit includes oscillation circuit,soft start circuit,timing control circuit,pulse driving circuit,over-current protection circuit,driving circuit,and other miscellaneous function circuit.2.function and data of pinsSTRZ4302 adopts 15 pins package,and its function and data of pins of the integrated circuit are shown as the chart 1. (View)

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STR-Z4267 switch power supply thick film integrated circuit

Published:2011/6/15 7:55:00 Author:chopper | Keyword: switch power supply, thick film, integrated circuit

STR-Z4267 switch power supply thick film integrated circuit
STRZ4267 is a switch power supply thick film integrated circuit produced by J (View)

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STR-Z3302 power supply thick film integrated circuit

Published:2011/6/15 7:54:00 Author:chopper | Keyword: power supply, thick film, integrated circuit

STR-Z3302 power supply thick film integrated circuit

STRZ3302 is a voltage change power supply thick film integrated circuit of se (View)

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circuit of transistor and current foldback

Published:2011/6/14 9:31:00 Author:chopper | Keyword: transistor, current foldback

circuit of transistor and current foldback
The following picture is the current foldback circuit.When the voltage drop on R is over 0.6V,VT2 will be conducted and VT1 will close to cut off the output current.In this case,the current of VT1 is limited at 6A. (View)