AC-DC Converter | PartQuest™ Explore

Application Area

camarasu_ionut
Designer233698

Member for

4 years 1 month

8

designs

2

groups

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

Bridge Rectifier

camarasu_ionut
Designer233698

Member for

4 years 1 month

8

designs

2

groups

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

Copy of AC-DC Power Adapter - on Sat, 08/01/2020 - 16:57

soufi.mohsen1
Designer233644

Member for

4 years 1 month

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

Copy of Bridge Rectifier - on Wed, 07/29/2020 - 11:14

349754
Designer230091

349754

Member for

4 years 6 months

7

designs

1

groups

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

Copy of Bridge Rectifier - on Wed, 07/29/2020 - 11:12

349754
Designer230091

349754

Member for

4 years 6 months

7

designs

1

groups

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

Copy of Bridge Rectifier - on Tue, 07/28/2020 - 14:17

imaneamrhar1
Designer233588

imaneamrhar1

Member for

4 years 1 month

3

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 Mon, 07/27/2020 - 11:08

luizantoniobrandao83
Designer233457

luizantoniobrandao83

Member for

4 years 2 months

1

designs

1

groups

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

Description

Esse é um projeto de circuito para um adaptador de energia típico de tomada.

A fonte sinusoidal representa uma fonte de parede típica de US 60 Hz, 120V CA dos EUA.

Um transformador reduz a tensão para uma faixa gerenciável a ser retificada para uma fonte de 5V DC, mas a forma de onda ainda é sinusoidal.

O retificador em ponte de 4 diodos recebe esse sinal sinusoidal de menor amplitude e produz um resultado polarizado DC, mas ainda com ruído resultante do processo de retificação.

O capacitor antes do chip do regulador de tensão ajuda a suavizar parte desse ruído. Em seguida, o chip do regulador fornece um mecanismo autônomo e controlado por feedback para manter a tensão de saída no valor especificado.

O capacitor de saída suaviza ainda mais qualquer ondulação de saída e fornece um reservatório de carga para suprir qualquer oscilação na carga atual que possa ser encontrada.

Este exemplo inclui um resistor de carga que permite a exploração dos efeitos da carga. A carga é variada durante a simulação e pode-se observar que, acima de uma carga de 100 mA, a regulação da tensão de saída começa a se deteriorar.

A adição de alguns componentes pode possibilitar que esse circuito forneça cargas de energia significativamente mais altas. Consulte http://www.systemvision.com/design/ac-dc-power-adapter-current-boost-regulator para obter um exemplo.

About text formats