Lighting

When power is first applied, three things happen: the light-driving transistor (Ql) is switched on because of a low output from U2, pin 3; timer Ul begins its timing cycle, with the output (pin 3) going high, inhibiting U2`s trigger (pin 2) via D2; and charge current begins to move through R3 and R4 to CI.When Ul`s output goes low, the inhibiting bias on U2 pin 2 is removed, so U2 begins to oscillate, flashing the third light via Ql, at a rate determined by R8, R6, and.....

Headlight Alarm Circuit

The base of Ql is connected to the car`s ignition circuit; the easiest point to make that connection is at the ignition switch fuse in the car`s fuse panel. Also, one side of the piezoelectric buzzer is connected to the instrument-panel light fuse; when the headlights or parking lights are on, the instrument panel is lit, too. When the headlights are off, no current reaches the buzzer. Therefore, nothing happens. What happens when the headlights arc on depends on the.....

Courtesy-light-delay-switch

This circuit holds on the internal light for approximately one minute after the car doors are closed. When the door contacts open, a + VE pulse is applied to the base of Tl. This transistor turns on, turning off T2 and charging the 10-llF capacitor. T3 turns on, holding on the internal light. ..

Car Headlight Control

It is annoying to realize that you have left your car headlights on only to find that the battery is flat. One possib..

Automobile Lights-On Reminder

The circuit can be used to give a visible or an audible warning that the headlights are on. It uses a 2N1305 ..

Courtesy-light-extender

The circuit keeps the courtesy light on for 30 seconds after you close the door. The lead from the door switch is removed and connected to the 555 circuit. The 555 is arranged in a monostable mode, and is triggered by the door switches. The output drives Ql, which is connected across the interior light switch. The interior light is turned on for 30 seconds after the door is opened. If the door(s) are held open for longer than 30 seconds, it will not reset until after.....

Night Safety Light For Autos

This circuit turns on the brake lights of a parked car when the headlights of an oncoming car are detected, wa..

Courtesy light extender

Most car door switches are simply single-pole switches, with one side grounded. When the door is opened the switch grounds the other line thus completing the light circuit. In a car where the negative terminal of the battery is connected to the chassis, the negative wire of the unit (emitter of Q2) is connected to chassis the positive wire (case of 2N3055) is connected to the wire going to the switch. In a car having a positive ground system this connection sequence is.....

Flashing-third-brake-light

When power is first applied, three things happen: light -driving transistor Ql is switched on due to a iow output from U2 pin 3; timer U1 begins its timing cycle, with the output, pin 3, becoming high, inhibiting U2"s trigger, pin 2, via D2; and charge current begins to move through R3 and R4 to Cl. When Ul"s output becomes low, the inhibiting bias on U2 pin 2 is removed, so U2 begins to oscillate, flashing the third light via Ql, at a rate determined by RS, R6, and.....

Headlight-alarm

The base of Ql is connected to the car"s ignition circuit. One side of the piezoelectric buzzer is connected to the instrument-panellight fuse. When the headlights are off,. no current reaches the buzzer, and therefore nothing happens. What happens when the headlights are on depends on the state of the ignition switch. When the ignition switch is on, transistors Ql and Q2 are biased on, removing the buzzer and the LED from the circuit. When the ignition .switch is.....

Delayed-extra-brake-light

Operating the brake pedal of the car brings on the normal brake lights and then, after a delay, the extra lights are turned on. ..

Lights-On Reminder Circuit

A relay and two diodes are all tliat is needed the relay performs the job of a buzzer so no annunciator is required. When the lights are left on, but the ignition is off, the normally closcd relay contacts are in series with the relay coil. That means the relay interrupts its own power each time it becomes active, so it chatters and acts like a buzzer...

Lamp-Switching Circuit Circuit

A normally open pushbutton switch (SI) delivers a positive input pulse to pin 4 of Ul, triggering the 1C into action. The output of Ul at pin 6 supplies base-drive current to a Darlington pair comprised of Q1 and Q2, activating . 10- capacitor and any resistor value of from 1 to 10 can be used as the timing components.To use the circuit on an auto`s headlights, connect the relay`s normally open contacts across the car`s headlight switch and press SI to extend the on time...

Manual Headlight/Spotlight Control For Autos Circuit

Pressing the START pushbutton turns on either the headlights or spotlights for a predetermined time. After 1 minute (Rl and CI determine this),..

Rear Fog Light Controller With Delay

We assume that most of our readers are thoughtful drivers who do not switch on their rear fog lights w..

Lights-On Warning

Because power for the circuit is obtained from the car"s side lights, the circuit can"t oscillate unless the lights are o..

Delayed headlights circuit

This circuit keeps an automobile's headlights on temporarily. It also will turn the lights off, even if you forget to flip the light switch. The circuit's shut-off delay is actuated only after both the ignition and light switches have been on, and only if the ignition switch is turned off first. If the light switch is turned off first, no delay results. Parking and brake-light operation is not affected. The maximum time out can be up to 3 minutes in part 1 and hours with.....

Interior Convenience Light

When the door is closed, this circuit keeps the dome light on for a period determined by Rl/Cl. The time is appr..

Third Brake Light

The circuit is designed to light (via SCR1 and SCR2) only when both the left and right brake lights are activated. The ci..

Automatic-headlight-delay

When the driver depresses pushbutton switch S1, timing capacitor C1 charges to 12 V and turns on transistor Q1, which drives power transistor Q2 into conduction. This, in tum, energizes the relay which has its contacts connected in parallel with the headlight switch. The relay will stay energized unW C1 discharges to the Q1 tum-off level. The lights-on period is determined by the value of C1, R1, and the characteristics of transistor QL With values chosen on the.....

Accounts area

Neighbour Categories

Car Head Lamp Fader Circuit - Breathing Effect Generator ...

The post explains a simple car head lamp fader circuit which generates a "breathing effect" on the lights before getting shut off, everytime the main switch is toggled OFF.

AutoSpeed - Towbar Electronics

The same problems are also likely to occur in cars using electronic 'body computer' control of their lights (eg by an on-board CAN bus), when electronic flasher circuits are used, and when modules ...

The steps to connect car light circuit | Just for my personal blog

Should be centered on light-weight switches to connect lights line, now in jiefang auto, as an example describes the sunshine line of standard strategy: (1) the full electricity KESS V2 OBD2 Manage...

Learn to connect car light circuit by yourself - china obd2 supplier

Really should be centered on gentle switches to attach lights line, now in jiefang automobile, one example is describes the sunshine line of simple approach: (1) the entire electrical power KESS V2...

Circuit electrinic: Lights Control for Model Cars Circuit Diagram

The author gave his partner a radio controlled (RC) model car as a gif t. She found it a lot of fun, but thought that adding realistic lights would be a definite improvement. So the author went bac...

Circuit panel: Car Interior Lights Delay

Most cars do not have delayed interior lights. The circuit presented can put this right. It switches the interior lights of a car on and off gradually. This makes it a lot easier, for instance, to ...

Tutorials

Operational Amplifiers

Computer Systems

Oscilloscopes

Transmitters & Receivers

Sensors & Detectors

ANSI Standards

Low Frequency Amplifiers

Power Amplifiers

Number Systems

Regulated Power Supplies

Analogue Filters

Digital Gates