Indicador proporcional de LEDs

147

01:47:22

O numero de LEDs que acendem em sequencia, nesse circuito, é proporcional à intensidade do sinal de entrada. O numero de LEDs é limitado pela tensao de alimentaçao , NAO devendo superar 10 LEDs com 12V e 15 LEDs com 18V.
Os resitores ligados ao positivo dos LEDs determinam o brilho.
Diodos = 1n 4148
Transistores = BC548
Para ver o funcionamento desse circuito usei para simular o sinal de entrada uma fonte de CC varie de 0V à 10V para ver os led acendem e apagarem

published 11 years ago

leandrofilho

11 years ago

Bom

lenzrulz

11 years ago

Regarding the 5th LED right at the bottom of your circuit layout which isn't illuminated, increase voltage from 7.23V to 9V. Adjust the transistor which comes off the 7.23V power source from 100 A/A to 1 KA/A. Adjust all LED resistors from 560Ω to 800Ω. Finally, adjust the 5th transistor right at the bottom of your circuit layout from 100 A/A to 1 KA/A. All the LED's including the 5th LED right at the bottom of your circuit layout should now illuminate.

coachka

11 years ago

Obrigado

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