Electronic Diagram Car Headlight Timer based on Transistors

Autometronicschool. - Do you want to design device that will keep the headlights of your car ON for about 1.5 minutes and then turns it OFF? In here we will show you one electronic diagram for car headlight timer based on transistor like in figure 1 below.

Circuit Diagram

Figure 1. Electronic Diagram Car Headlight Timer based on Transistors
(Source: Circuitstoday)

Component Part

1. Resistors
2. Capacitor
3. Transistor BC547 and BC327
4. Relay
5. Switch
6. Diode

Description

Electronic diagram like in figure 1 above is Electronic Diagram Car Headlight Timer based on Transistors. According Circuitstoday site describe that This circuit is a compact timer circuit that will keep the headlights of your car ON for about 1.5 minutes and then turns it OFF.This circuit incorporated to your car will help you to access dark places with out the need to come back and turn OFF the head lights.

When the push button switch P1 is pressed the capacitor C1 is charged to the full battery voltage.As a result the transistor Q1 is turned ON ,which in turns ON Q2 which in turns drives the relay K1 to glow the head lights.The relay K1 will remain activated until the capacitor C1 is fully discharged.The time delay of the circuit depends on values of C1 & R1 and here it is set to be 1.5 minutes. Please read more this diagram from original source using link here.