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10A car battery charger - The charger is suitable for lead-acid car batteries and
it is assembled in two units: a metal box with the toroidal transformer, instrument,
lights, etc, and a small plastic box housing the voltage and temperature circuit.
Connection between main box and sensor is realized with a standard 3 core x 1mm,
electric cable, 4m long. Its resistance is factored in the circuit calculations and it
is the limiting resistor against...(circuit added 05/08) |
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12 Volt to 9 Volt DC Converter - Car Converter for12 Volt to 9V (Tony van Roon's
electronic design added 4/02) |
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125kHz Wireless Smart Key Detector - This circuit will turn on an indicator light
whenever it detects a smart car key containing an RFID chip. (added 7/06) ….(designed
by David A. Johnson) |
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12V to +/- 30V DC to DC Converter - This is a DC to DC converter for car power
amplifier. 12V input generates +30V and -30V output for preamp or power amplifiers.
Circuit uses SG3525 IC, Mosfets and switching power supply. ….(electronic schematic
added 11/08) |
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12V to 9V Car Converter - (Tony van Roon's electronic circuit added 4/05) |
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13.8V Power Supply/ Charger - A supply for testing and working on car amplifiers,
up to about 500 Amps! (circuit added 6/07) |
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160 Baud ALDL Hardware Interface - This interface allows vehicle's ALDL data
stream to be displayed in real time on a PC using simple software. hardware is
designed to be able to be constructed by average hobbyist who has a temperature
controlled soldering iron and basic skills in constructing simple electronics. It uses
a minimum of (readily available) components consistent with good electronics design.
(added 4/05) |
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2 Watt Switching Power Supply - In this small switching power supply, a Schmitt
trigger oscillator is used to drive a switching transistor that supplies current to a
small inductor. Energy is stored in the inductor while the transistor is on, and
released into the load circuit when the transistor switches off. The output voltage is
dependent on the load resistance and is limited by a zener diode that stops the
oscillator when the voltage reaches about 14 volts. Higher or lower voltages can be
obtained by adjusting the voltage divider that feeds the zener diode. The efficiency
is about 80% using a high Q inductor...(added 6/06) |
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3rd Brake Light - (Tony van Roon's electronic circuit added 03/04/05) |
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3rd Brake Light Pulser - (Tony van Roon's circuit design added 8/03) |
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3rd Brakelight hookup - (Tony van Roon's circuit design added 08/09) |
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5301 Wideband Fuel Mixture Display - (circuit design added 8/03) |
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555-Timer Based Motorcycle Alarm - This circuit features an intermittent siren
output and automatic reset. It can be operated manually using a key-switch or a hidden
switch; but it can also be wired to set itself automatically when you turn-off the
ignition. By adding external relays you can immobilize the bike, flash the lights etc.
(circuit design added 04/05/06) |
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6V Ultra-Bright LED Chaser - This is a spectacular but completely useless project.
It lights Ultra-Bright LEDs in a sequence and each LED flashes brightly very briefly.
The LEDs light-up going around and around since they are mounted in a circle (on a
CD), then they pause ...(electronic design added 6/07) |
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80188XL Engine Tachometer - (circuit design added 8/03) |
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A 555-Timer Based Motorcycle Alarm - This circuit features an intermittent siren
output and automatic reset. It can be operated manually using a key-switch or a hidden
switch; but it can also be wired to set itself automatically when you turn-off the
ignition. By adding external relays you can immobilize the bike, flash the lights etc.
(circuit design added 08/08/08) |
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A CMOS Based Motorcycle Alarm - This circuit features an intermittent siren
output and automatic reset. It can be operated manually using a key-switch or a hidden
switch; but it can also be wired to set itself automatically when you turn-off the
ignition....(circuit design added 06/07/08) |
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A CMOS Based Vehicle Anti-Theft Alarm - This car alarm circuit features Exit and
Entry delays, an instant alarm zone, an intermittent siren output and automatic Reset.
By adding external relays you can immobilize the vehicle and flash the
lights….(circuit design added 06/07/08) |
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A Simple Car Battery Charger psimages - This very simple circuit uses a
transformer ,two diodes , a capacitor and an ammeter. To charge a battery just
connect + and terminals of circuit to corresponding terminals of
battery. When battery is not charged, ammeter reading shows 1-3
amps...(added 10/05) |
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Acceleration meter for cars - This circuit it is count the acceleration from
-1000mg up to +1000mg. Can be used in lot of applications like cars, elevators, ramps
and more.….(electronic schematic added 03/09) |
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Adaptive Windscreen Wiper Control - (circuit design added 8/03) |
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Additional stop Lamp control unit - In Japan, the car that is equipped with
additional stop lamp increased.This lamp expands the area that shines red at the time
of stepping the brake to stop the car and ….(added 08/08/08) |
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Agilent TS-5400 Series II Automotive Electronics Functional Test System - Agilent
Application Note (added 6/06) |
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AN10 Automotive Relay Drivers using the ZVN4206AV: Protection Free Interfacing with
Avalanche Rated MOSFETs - Zetec Semiconductors Applications Notes An
alternative solution is provided to usual large package Darlington effected
relay driver. The ZVN4206AV has been designed, processed and rated to withstand
significant energy within breakdown region. This allows part to absorb
back-emf and transient energy, reby allowing lower component count circuits.
(app note added 2/06) |
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AN16 Automotive & Household Siren Driver Circuits: ZSD100 & Discrete 'H'-Bridge
Minimum Parts Count Solution - Zetec Semiconductors Applications Notes A
solution is provided that uses a minimum number of components by utilising an
application specific signal generation IC, and a high efficiency 'H'-bridge effected
with 3A DC rated Super-δ TO92 style switching transistors. (app note added
2/06) |
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AN-453: COPS Based Automobile Instrument Cluster - National Semiconductor
Application Note (app note added 2/06) |
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AN-454: Automotive Multiplex Wiring - National Semiconductor Application Note
(app note added 2/06) |
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AN5 Super E-Line Applications in Automotive Electronics: replacement of Large Packaged
Transistors with an Enhanced TO92 Product - Zetec Semiconductors
Applications Notes Load drivers within automotive systems have to tolerate extreme
environmental and electrical conditions. This note describes how Silicone
encapsulated E-Line range can provide cost and performance benefits to
Automotive systems designer. (app note added 2/06) |
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AN-673: 2-Way Multiplexed LCD Drive & Low Cost A/D-Converter using V/F Techniques with
COP8 MicroControllers - National Semiconductor Application Note (app note
added 6/06) |
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AN829: Lightkeeper Automotive Lighting Control Module - Microchip Application Note
Published 27-Mar-02 (app note added 6/06) |
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AN-915: Automotive Physical Layer SAE J1708 & the DS36277 - National Semiconductor
Application Note (app note added 2/06) |
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Analog AM/FM Radio - (application / block diagram added 6/07) |
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Anit Theft Motorcycle Alarm - (schematic added 9/02) |
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Anti-Theft Alarm for Bikes - (circuit / schematic design added 6/06) |
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Anti-Theft Security for Car Audios - (circuit / schematic design added 6/06) |
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Audio Refinement Complete integrated Amplifier - The Complete' is made to design
by Yves-Bernard Andre (YBA). My unit s/n is an early 00026, probably later copies are
different from the first batch. I used the amp for two years, and the only reason to
dig inside it, apart from 'how they did it' curiosity, was to disconnect the volume
pot motor. It returns to zero at each power down...(added 04/05/06 |
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Audison LR604XR Amplifier (Car Audio) - Of the few car amplifiers I tested,
gutted, decyphered and fixed, this one seems to be the best in design quality. Too
many car amps (although solidly built) are apparently designed by computer class
students, too many traces, too many vias, absolutely wrong component placement etc.
And on schematic level...(added 04/05/06) |
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Auto batteries charger (Pd) - ….(design added 08/08) |
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Automatic Dual Output Display - This circuit lights up ten bulbs sequentially,
first in one direction and n in opposite direction, thus presenting a nice
visual effect. In this circuit, gates N1 and N2 form an oscillator. The output of this
oscillator is used as a clock for BCD up/down counter CD4510 (IC2). Depending on
logic state at its pin 10, counter counts up or down. During count up operation,
pin 7 of IC2 outputs an active low pulse on reaching ninth count. Similarly,
during count-down operation, you again.... (added 10/04) |
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Automatic Headlight Brightness Switch - ….(electronic schematic added 08/08) |
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Automatic Headlight Brightness Switch (Aaron Cake) - (circuit added 7/02) |
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Automatic Speed Controller for fans & Coolers - During summer nights,
temperature is initially quite high. As time passes, temperature starts
dropping. Also, after a person falls asleep, metabolic rate of one’s body
decreases. Thus, initially fan/cooler needs to be run at full speed. As time
passes, one has to get up again and again to adjust speed of fan or .…
(added 10/05) |
|
Automotive & Household Siren Driver Circuits: ZSD100 & Discrete 'H'-Bridge Minimum
Parts Count Solution - Zetec Semiconductors Applications Notes A solution is
provided that uses a minimum number of components by utilising an application specific
signal generation IC, and a high efficiency 'H'-bridge effected with 3A DC rated
Super-δ TO92 style switching transistors. (app note added 2/06) |
|
Automotive 12v Electrical System Voltage Indicator - This battery powered unit is
designed to quickly aid troubleshooting of 12v electrical systems in a car.
Three LEDs proved a visual indication of a +12v, ground or an open circuit voltage
level. Posted ….(designed by David A. Johnson) |
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Automotive 12V to +-20V converter (for audio Amplifier) - The limitation of car
supply voltage (12V) forces to convert the voltages to higher in order to power audio
amplifiers. In fact the max audio power x speaker (with 4 ohm impedance) using 12V
is.... (added 05/06/07) |
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Automotive Electrical Voltage Indicator - This circuit will indicate if an
automotive electrical circuit has zero volts or 12 volts present. (added 7/06)
….(designed by David A. Johnson) |
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Automotive Electronic Functional Test Using Agilent System Components - Agilent
Application Note (added 6/06) |
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Automotive link uses single Wire - 04/03/03 EDN-Design Ideas: In automotive
industry, in which 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
car's chassis or ground conductor providing a negative return path.....(design idea
added 1/05) |
|
Automotive Multiplex Wiring - National Semiconductor Application Notes first
published05-Oct-1998 (app note added 4/02) |
|
Automotive Physical Layer SAE J1708 & the DS36277 - National Semiconductor
Application Note (app note added 2/06) |
|
Automotive Relay Drivers using the ZVN4206AV: Protection Free Interfacing with
Avalanche Rated MOSFETs - Zetec Semiconductors Applications Notes An
alternative solution is provided to usual large package Darlington effected
relay driver. The ZVN4206AV has been designed, processed and rated to withstand
significant energy within breakdown region. This allows part to absorb
back-emf and transient energy, reby allowing lower component count circuits.
(app note added 2/06) |
|
Automotive Speed Indicator - The speed of an automobile can be indicated by
detecting the pulses generated by the ignition system and causing an LED to light. The
circuit utilizes a quad NOR gate IC chip. Two of the gates are configured as a one
shot multivibrator ….(added 08/08/08) |
|
Automotive switching regulators get input transient voltage protection - 01/24/08
EDN-Design Ideas: A simple scheme protects switching regulators against 50V voltage
transients in automotive applications.....(design idea added 2/08) |
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Auxiliary Module - (application / block diagram added 6/07) |
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Bicycle Back Safety Light - this circuit has been designed to provide a clearly
visible light, formed by 13 high efficiency flashing LEDs arranged in a
pseudo-rotating order. Due to low voltage, low drain battery operation and small size,
the device is suitable for mounting on bicycles as a back light, or to put on by
jogger/walkers (schematic added 06/07/08) |
|
Bike Device - For starters, I mounted a 7 amp-hour gel-cell on the frame so that I
wouldn't have to keep buying batteries for the headlight. The headlight is a 12
watt Malibu light from Home Depot complete with a very good diffraction lens. The horn
is a scavenged auto alarm from Walmart. I just use the horn with….(circuit
design added 08/08) |
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Bike Light Flasher (Randy Linscott) - This circuit will flash an incandescent
light that you can purchase from Radio Shack. Adjust the VR's for your flash
requirements and make sure that the lamp you use is designed to put out high
brightness. (electronic design added 08/08/08) |
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BMW R Series Motorcycle Regulator Schematic - (circuit design added 8/03) |
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Brakelight Flasher - This is basically a flasher circuit modified to turn on and
off a bulb instead of a LED. It uses a 555 timer IC working as an astable
multivibrator. The flashing rate can be varied from very fast to a maximum of once in
1.5 sec by varying preset VR1. The ON time of circuit is given by:
TON= 0.69xC1x(R1 + VR1) second and OFF time is: TOFF= 0.69xC1xVR1
second....(added 05/07) |
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Breakdown Beacon - This is a very simple automotive project you can keep in the
boot of the car for those unfortunate occasions when you break down. I hope this
will not be very often but the chances of a breakdown are always greatest on a cold
and windy night, just when you need some sort of warning to say you are laid-up at the
side of the road. (diagram added 05/06/07) |
