If the car has already a switched installed which senses when the brakes are pushed then connect the led in series with a proper value resistor on this switch (check if voltage is present on the switch). Otherwise you have to install a switch to sense when the brakes are pressed.Does any one got the circuit for above said application
i want to use single led for both state(for tail and brake )
The transistor packages are TO-92; small 3-legged critters.PLEASE MENTION THE PACKAGE FOR TRANSISTOR AND WATTAGE FOR RESISTOR.
Since I don't know what you have available, here is a list:90 OHMS IS NOT AVAILABLE,NEAREST VALUE IS 100 OHMS? PLEASE SUGGEST.
The formula for power is: P=EI, or Power in Watts = Voltage x Current.PLEASE TELL ME THE CIRCUITS POWER, BECAUSE PCB WILL BE HOUSED INSIDE TAIL LAMP,IF IT DISSIPATES MORE HEAT I HAVE TO INSTALL IT OUT SIDE.
Because the low voltage drop across the Schottky diodes helps to keep the current very close whether the brake is applied with the tail light circuit ON or OFF.two more doubts:
1.why we cannot use normal diode(i.e D5,D6,&D7)
That is the whole idea of the circuit.2.WILL THE CIRCUIT GIVE CONSTANT CURRENT?
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