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Car Brake Light Signal Module

2014-12-11 22:38  
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This article shows that the vehicle brake lights signal module circuit. The circuit of transistor Q1 will drive LED array type recommended in currents up to 500 mA. Higher current required to drive the array (1 A or more) with a BD436  (32 v 4 a PNP transistor) Q1 and a 1 k resistor R4 specification. Q1 LED array driver: light-emitting diodes will be when the pin # 4 of IC1 lower. IC1 internal oscillator generates a square wave of frequency splitting 64 times flops included on-chip in order to obtain approximately 1-4 Hz at Pin # 4: This is the LED array flash frequency can be set to the desired value through R3. C2 and R1 brakes applied automatically reset IC whenever. A positive signal in the D1 cathode oscillator stopped in five pulses.

Brake Light Signal Module


R1_____________10K  1/4W Resistor
R2____________220K  1/4W Resistor
R3____________500K  1/2W Trimmer, Cermet or Carbon
R4______________1K8 1/4W Resistor (See Note)
R5______________1K8 1/4W Resistor

C1_____________47µF  25V Electrolytic Capacitor
C2______________1µF  25V Electrolytic Capacitor
C3_____________10nF  63V Polyester Capacitor

D1___________1N4148  75V 150mA Diode

IC1____________4060  14 stage ripple counter and oscillator IC

Q1____________BC327  45V 800mA PNP Transistor (See Note)

SW1____________SPST  Brake Switch

B1______________12V  Vehicle Battery


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