AC-DC Converter | PartQuest™ Explore

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KDAS
Designer197889

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6 years 7 months

8

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Bridge Rectifier

Chris Murray
Designer9431

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9 years

7

designs

1

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Bridge Rectifier with Inductor-r1

Bill K
Designer87476

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8 years

40

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Bridge Rectifier

Milan_1
Designer174891

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6 years 10 months

1

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Bridge Rectifier

p.hertzog
Designer173526

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6 years 10 months

1

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AC-DC Power Adapter

clara.yeung
Designer166966

Member for

6 years 11 months

2

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Description

This is a circuit design for a typical wall-plug power adapter. The sinusoidal source represents a typical US 60 Hz, 120V AC wall supply. A transformer steps the voltage down to a manageable range to be rectified for a 5V DC supply, but the waveform is still sinusoidal. The 4 diode bridge rectifier takes this lower amplitude sinusoidal signal and produces a DC biased result, but still with noise resulting from the rectification process.The capacitor before the voltage regulator chip helps smooth some of this noise. Then the regulator chip provides a self-contained, feedback controlled mechanism to keep the output voltage at the specified value. The output capacitor further smooths any output ripple and provides a reservoir of charge to supply any surge in current load that may be encountered.This example includes a load resistor that allows the exploration of the effects of load. The load is varied during the simulation and it can be seen that above a load of 100 mA, the regulation of the output voltage begins to deteriorate.The addition of a few components can make it possible for such a circuit to provide significantly higher power loads. See http://www.systemvision.com/design/ac-dc-power-adapter-current-boost-regulator for an example.

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trisjag
Designer118106

trisjag

Member for

7 years 7 months

4

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Isolated Sepic

trisjag
Designer118106

trisjag

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7 years 7 months

4

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Bridge Rectifier 120V AC to 20V DC with FSM load

beso
Designer154816

beso

Member for

7 years

2

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AC-DC Power Adapter

bourte
Designer136501

bourte

Member for

7 years 4 months

6

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Description

This is a circuit design for a typical wall-plug power adapter. The sinusoidal source represents a typical US 60 Hz, 120V AC wall supply. A transformer steps the voltage down to a manageable range to be rectified for a 5V DC supply, but the waveform is still sinusoidal. The 4 diode bridge rectifier takes this lower amplitude sinusoidal signal and produces a DC biased result, but still with noise resulting from the rectification process.The capacitor before the voltage regulator chip helps smooth some of this noise. Then the regulator chip provides a self-contained, feedback controlled mechanism to keep the output voltage at the specified value. The output capacitor further smooths any output ripple and provides a reservoir of charge to supply any surge in current load that may be encountered.This example includes a load resistor that allows the exploration of the effects of load. The load is varied during the simulation and it can be seen that above a load of 100 mA, the regulation of the output voltage begins to deteriorate.The addition of a few components can make it possible for such a circuit to provide significantly higher power loads. See http://www.systemvision.com/design/ac-dc-power-adapter-current-boost-regulator for an example.

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KDASDesigner197889

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Chris MurrayDesigner9431

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Bill KDesigner87476

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Milan_1Designer174891

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p.hertzogDesigner173526

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clara.yeungDesigner166966

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trisjagDesigner118106

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trisjagDesigner118106

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besoDesigner154816

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bourteDesigner136501

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KDAS
Designer197889

Chris Murray
Designer9431

Bill K
Designer87476

Milan_1
Designer174891

p.hertzog
Designer173526

clara.yeung
Designer166966

trisjag
Designer118106

trisjag
Designer118106

beso
Designer154816

bourte
Designer136501