CONTROLE DE COOLER ON OFF COM TERMISTOR

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01:42:14

VISITE MEU CANAL NO YOU TUBE  >WSM TRÔNIC<
Esse simples circuito, NA PRATICA, funciona perfeitamente. Usando um transistor (NPN) BC548, um termistor de 8k Ohms (usar no lugar do potenciometro), um resistor de 1kOhms e outro de 10KOhms. O funcionamento é simples; quando a resistencia do termistor baixar a aproximadamente 7,5KOhms a base do transistor será alimentada com uma corrente capaz de excitar o relé que poderá ligar um cooler ou qualquer outro dispositivo a gosto. 

published 6 years ago

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