Voltage Regulator | PartQuest™ Explore

Application Area

Designer223918

Member for

5 years 6 months

12

designs

1

groups

Add a bio to your profile to share information about yourself with other SystemVision users.

Copy of Diode_bridge_rectifier_LM - on Fri, 06/19/2020 - 11:47

Designer223976

Member for

5 years 5 months

8

designs

1

groups

Add a bio to your profile to share information about yourself with other SystemVision users.

KASKO_IIB_BRIDGE

Designer226172

Member for

5 years 4 months

14

designs

1

groups

Add a bio to your profile to share information about yourself with other SystemVision users.

Copy of Diode_bridge_rectifier_LM - on Thu, 06/18/2020 - 10:50

Designer224204

Member for

5 years 5 months

19

designs

1

groups

Add a bio to your profile to share information about yourself with other SystemVision users.

Copy of Diode_bridge_rectifier_LM - on Thu, 06/18/2020 - 10:11

Designer223248

Member for

5 years 6 months

17

designs

1

groups

Add a bio to your profile to share information about yourself with other SystemVision users.

Copy of Diode_bridge_rectifier_LM - on Tue, 06/16/2020 - 11:52

Designer223977

Member for

5 years 5 months

9

designs

1

groups

Add a bio to your profile to share information about yourself with other SystemVision users.

Copy of Diode_bridge_rectifier_LM - on Tue, 06/16/2020 - 11:50

Designer223977

Member for

5 years 5 months

9

designs

1

groups

Add a bio to your profile to share information about yourself with other SystemVision users.

Copy of Diode_bridge_rectifier_LM - on Tue, 06/16/2020 - 11:50

Designer223977

Member for

5 years 5 months

9

designs

1

groups

Add a bio to your profile to share information about yourself with other SystemVision users.

Copy of AC-DC Power Adapter - on Sun, 06/14/2020 - 11:56

Designer232463

Member for

4 years 9 months

1

designs

1

groups

Add a bio to your profile to share information about yourself with other SystemVision users.

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.

About text formats