Ligando cooler com ntc

145

02:46:52

Controle de temperatura com Lm358 e ntc de 10k representado pelo Resistor de 6k no diagrama. 
O ntc faz um divisor de tensão com o Resistor de 4,7k. O sinal do divisor de tensão vai ligado ao pino menos do Lm358. 
Um trimpot regula a entrada de tensão no pino mais do lm358. Qd o tensão do pino menos for menor do que a tensão no pino mais o cooler liga. Quando a tensão do pino menos for superior ao pino mais o cooler desliga.
Lista de peças usadas.
1 Resistor de 4,7k
1 Resistor de 1k
1 lm358
1 trimpot de 20k
1 Transistor bc338
1 cooler de 5v
1 termistor ntc 10k

published 2 years ago

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