12 Volt Automotive Inverter : This circuit will
allow you to operate small devices like laptop
computers inside your automobile without an
expensive automobile power supply. The circuit takes
advantage of the fact that power transformers are
linear devices and can be used to step up as well as
step down. |
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12 Volt to 9 Volt DC Converter: Car Converter
for12 Volt to 9V |
12v car lamp flasher: |
20 Watt Power Amplifier: Designed to be used as
car amplifier |
3rd Brake Light Pulser: |
5301 Wideband Fuel Mixture Display:
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80188XL Engine Tachometer: |
Adaptive Windscreen Wiper Control:
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Alternator Signal Detector: |
Analog Tachometer for Gasoline Engines: |
Automatic Dual Output Display:
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Automatic Headlight Brightness Switch:
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Automatic Heat Detector: |
Automatic Speed Controller for Fans & Coolers: |
Automotive Alarm System: |
Automotive AntiLock Brake Control Driver:
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Automotive link uses single wire: 04/03/03 EDN-Design
Ideas / In the automotive industry, in which the
goal is to produce cars with simpler, lighter wiring
looms, any interface that uses just one wire instead
of two offers a distinct advantage. The circuit in
Figure 1 implements a bidirectional link using a
single wire, with the car's chassis or ground
conductor providing a negative return path... |
Automotive Multiplex Wiring: National
Semiconductor Application Notes first
published05-Oct-1998 |
BMW Motorcycle Side Stand Protection Mod:
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BMW R Series Motorcycle Regulator Schematic:
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Breath Alcohol Tester: Controls the cars
ignition system |
Capacitor Discharge Ignition Circuit:
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Car Battery Charger: quickly and easily charge
most any lead acid battery, automatically turns
charging off when ready |
Car Clock: CaClo was designed and built to be
used in an automobile. It uses pure discrete logic
ICs (4000 series) and a4-digit LCD display with
backlight, plus a few SMD ICs for the LCD driver.
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Car indicator alarm: |
Car Interval Wiper: CaWip was designed and built
to be used in an automobile. Both the front and rear
wipers can be controlled separately using six
interval settings. Its a fairly old design, thats
why theres no PIC microcontroller in sight!
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Car Message Display: CaMeD was designed and
built to be used in an automobile. Its purpose is to
display various symbols/messages to the car driver
traveling behind you. It uses1024 LEDs to form a32
x32 matrix display. A total of12 symbols/messages
can be displayed,4 of them being user-definable by
using a visual basic utility tool connected to the
rs232 port of a PC. |
Car NiCd Charger: This circuit provides up
to20-Volt output from a regular13.2V automotive
battery, to enable constant current charging of NiCd
battery packs up to15 cells @1.2V (18V total).
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Cigarette Lighter 9 Volt Adapter:
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Combination Lock for Car Liftgate:
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Dome Light Dimmer for Cars : Usually when the
car door is closed, the dome light just goes OFF.
With this circuit, you can have our dome light fade
slowly in brightness and finally go OFF.
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Dome Light Dimmer using Mic4680 Switching Regulator:
simple circuit which outputs +5-Volt
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Dome Light Dwell Extender / Dimmer : allows you
to dim your dome light and keeps the dome light of
your automobile on after you close the door
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Engine Control unit Schematics:
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FCD (Fuel Cut Defencer): |
Flashing High Intensity LED 3rd Brake Light:
This circuit to make a flashing3rd brake light
assembly was designed to be easy to locate all the
needed components and reasonably in expensive to
build. |
Fuel Injector Pulse Width Monitor:
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Grand Cherokee Off Highway Lights:
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Headlight On Reminder With Light:
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Headlight Reminder: |
Integrate Fuel Pump Wire Security Cut Off With a
Turbo Timer: |
Interface Between GM's 5 Volt 8192 Baud ALDL Data
Stream and a PC Serial Port:
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LED Headlamps : This article includes circuits
of DC-DC LED drivers (click PICs for bigger ones)
step downs to run LEDs on less than Battery Volts,
Boost for above. |
Lighting Third Brake Light: |
Motorcycle turn Signal System:
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Oxygen Sensors: When they go bad your automobile
runs poorly, learn about them and build a substitute
for diagnostics or off-road use. |
Park Aid: 3-LEDs signal bumper-barrier distance
Infrared operation, indoor use |
Parking Sonar: |
Portable CD Player Adapter for Car: |
Road Ice Alarm: |
Rush Converter for the Car: |
Safety Indicator Lights: SILs was designed and
built for a colleague at work. He needed a device to
control the indicator lights on his motorcycle. The
idea was to turn all lamps on during driving, but
switch over to normal operation when the indicator
was needed. He wanted this device because his
motorcycle was fairly broad and was worried that
passing cars wouldnt notice, especially in the
dark! |
Simple Car Battery Charger: |
Simple Car Preamplifier and Artificial Earth:
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Solar Car Array Controller Schematic:
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Solar Car Battery Monitor Schematic: |
Solar Car Brake Controller Schematic:
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Solar Car Display Controller Schematic:
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Solar Car Electrical Design and Circuit index:
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Solar Car Main Controller Schematic:
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Third Brake Light Pulser: |
Timer Car Interval Wiper: |
Turn Signal Alarm: |
Ultrasonic Parking Sonar: |
Wide Band Fuel Mixture Display: |
Windshield Wiper Delay: |
Wiper Speed Controller: |
Wireless Auto Tachometer: |
WWV Converter for the Car: |