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modified 2 years ago

Overvoltage Protector - Protetor de Sobretensão

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04:30:52
This circuit is designed to protect a 13.8 Volt load. But, it can be notified for other voltages, just by changing the value of the zener diode. The circuit will activate the relay and disconnect the load when the voltage exceeds 14 volts. If you need to make the circuit fire with 20 volts, just change the zener diode to 20 V. Or, according to your needs. It is necessary to use a separate source just to power the relay coil. Thus, if there is overvoltage in the load, the relay coil will not be affected. *****Este circuito foi projetado para proteger uma carga de 13.8 Volts. Mas, pode ser notificado para outras voltagens, bastando alterar o valor do diodo zener. O circuito, vai acionar o relé, e desligar a carga, quando a tensão ultrapassar os 15.2 volts. Caso precise fazer o circuito disparar com 20 volts, basta trocar o diodo zener para 20 V. Ou, de acordo com sua necessidade. É necessário usar uma fonte separada apenas para alimentar a bobina do relé. Com isso, se houver sobretensão na carga, a bobina do relé não será afetada. T1: BC 327 T2: BC 337 T3: BC 337
published 2 years ago

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