Ponte retificadora 12v

Ponte retificadora 12v

Ponte retificadora 12v on line

240v ac para retificador dc

Retificador Estado Sólido Positivo e Negativo Terra 6v e 12vA retificador converte AC para DC. Este retificador é adequado para 6V AC ou 12V AC e converte a saída para DC. Simples de caber, ocupa menos espaço, sem problemas de aquecimento, brilhante! Conecte o Positivo ao terminal +, o negativo é o terminal oposto, e os 2 cabos do alternador de cada lado. Nota: isto não regula a saída, apenas converte a AC para DC. Você ainda pode precisar de alguma forma de controle de regulagem da saída de tensão
Os preços excluem o IVA. Os pedidos enviados para outros destinos, incluindo países da União Européia, podem incorrer em taxas, impostos e taxas de manuseio. Os envios são despachados com as declarações corretas da Prova de Origem.

diodo retificador

Em vista de seu desempenho e capacidade, o retificador de ponte de onda completa é usado em muitas fontes de alimentação lineares, fontes de alimentação em modo de interruptor e outros circuitos eletrônicos onde a retificação é necessária.
Um diagrama do circuito retificador de ponte básico tem um bloco retificador de ponte no centro. Este consiste de um circuito de ponte que inclui quatro diodos. Estes podem ser diodos individuais, ou também é fácil obter retificadores de ponte como um único componente eletrônico.
O retificador de ponte oferece retificação de onda completa e tem a vantagem sobre o retificador de onda completa, utilizando dois diodos que não exigem torneira central no transformador. Isto significa que um único enrolamento é usado para ambas as metades do ciclo.
Os componentes eletrônicos enrolados são caros e a inclusão de uma torneira central significa que dois enrolamentos idênticos, cada um fornecendo a tensão total, são necessários para fornecer a retificação de onda completa. Isto duplica o número de voltas e aumenta o custo do transformador. Isto pode ser particularmente importante ao projetar fontes de alimentação lineares ou outros dispositivos eletrônicos.

wikipedia

Eu comprei o seguinte pensando que seria mais do que suficiente, mas começou a fumar quando eu o liguei. Verifiquei que estava conectado aos terminais adequados por especificação, e verifiquei que eu estava recebendo 12VAC da fonte de alimentação.
Você tentou ler a folha de dados do dispositivo? Lá, você verá a queda de voltagem para frente dos diodos dentro do retificador. Em geral, você precisa encontrar e ler a folha de dados de cada componente elétrico que você está usando.
O tempo de queda de corrente é (mais ou menos) a energia que precisa ser dissipada. Temos também a temperatura máxima de operação. Portanto, armado com essas informações, um sistema de resfriamento precisa ser concebido para trabalhar com o retificador.
Portanto, se olharmos para números reais, temos uma queda máxima de 1,2 V por elemento. De uma só vez, temos dois diodos condutores, de modo que são 2,4 V vezes 17 A nos dando um pouco menos de 40 W somente no retificador.
Portanto, o que temos a seguir é o procedimento de como obter o aumento de temperatura acima do ambiente para a unidade. Então vamos olhar primeiro para a resistência térmica entre a junção e a caixa. É de 1,5 K/W. Um kelvin e um grau Celsius são da mesma magnitude, assim podemos obter o aumento de temperatura desta forma.

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