Electronic Circuits and electronic circuits, electronic schematics plus an extensive resource for hobbyists, inventors and engineers

DiscoverCircuits.com, has 40,000+ electronic circuits, cross-referenced
into 500+ categories.    We have searched the web to help you find quick design ideas.
We make every effort to link to original material posted by the designer. 
Please let us if you would like us to link to or post your design.

HOME Schematics Index Hobby Corner Dave's Circuits Electronic Resources Contact Info
Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches


Sensors / Detectors: Automotive Circuits
Sensors / Detectors -- Main Page
Automotive:  #'s       A-B       C-D       E-F       G-I        J-M       N-S      T-U      V-Z


Last Updated: November 29, 2017 05:39 AM
Circuits Designed by Dave Johnson, P.E. :
  • Logic Controlled 12v DC Motor With Automatic Brake -  There are times when you would like to control a DC motor using a simple +5v logic swing signal. The circuit below performs this feat and also includes an automatic motor braking circuit. This circuit will bring a fast moving DC motor to a stop in seconds. The braking action is automatically applied whenever DC power is removed . . . [Circuit by David Johnson P.E.,  02/18/10]

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

Jared's Ride Isn't Fly But the Steering's Perfect -  So he always stays on course, Jared designed a mechatronic device that simulates perfect steering in an automobile. The small-scale, single-wheel model determines the speed of wheel rotation from the magnitude of the curve it's traveling. Gadget Freak / Design News. . .  [by Design News Staff]

 

Junction Box Rear -  STMicroelectronics-Application. . .  

 

Junction Box Underhood -  STMicroelectronics-Application. . . 

KITT Car Scanner -  This custom mod gives your computer the personality of KITT, the computerized car from Knight Rider TV fame. It slides into a CD drive bay, and only needs a single standard power connector. The project is a light display which imitates the dot in KITT's hood. . . 

 

KITT Car Scanner -  This custom mod gives your computer the personality of KITT, the computerized car from Knight Rider TV fame. It slides into a CD drive bay, and only needs a single standard power connector. The project is a light display which imitates the dot in KITT's hood. . . 

 

Knight Rider Lights -  The 555 timer IC is connected for Astable Operation, the clock pulses are fed to the 4017 IC via the 10K resistor. The 4017 is a 10 stage counter, each of the outputs is connected to the appropriate LED, as some LEDs need to be on for more than one count, we use diodes to avoid a short circuit. . .  [Andy Clarkson's Website]

  

Knight Rider Look-a-like Lights -  These circuits will give provide a Good Effect, duplicating the Knight Rider Lights, Plus more. . .[G.L. Chemelec]

 

Large capacitor charge Controllers -  Here's a basic cap switch that will connect capacitor to ground only when it's charged to within 0. 4-0. 7V from battery voltage (otherwise, it's charging through a 22 Ohm resistor, which can be a low-power 12V lightbulb, too) . . .  [klausmobile @ yahoo.Com]

 

LED 12 Volt Lead Acid Battery Meter -  In the circuit above, a quad voltage comparator (LM339) is used as a simple bar graph meter to indicate the charge condition of a 12 volt, lead acid battery. A 5 volt reference voltage is connected. . . 

 

LED driven tail/brake Light Cluster -  Constant current circuitry 12V Battery operation Circuit diagram: Parts: R1 10K 1/4W Resistor R2 33R 1/4W Resistor (See Notes) R3 15R 1/4W Resistor (See Notes) D1 1N5819 40V 1A Schottky-barrier Diode (See Notes) D2--D13 LEDs High brightness, high. . .  [Flavio Dellepiane's web site]

 

Light Organ for Car -  flashes3 low voltage Light, operates at10-25-Volt voltage, in PDF format, text in Finnish. . . 

 

Lighting Third Brake Light -  This circuit is NOT a pulser or flasher! What's so special about this circuit? Well, the first third-brake light I installed I had to pull a wire from the Third Brake Light all the way underneath the carpet to the brake-pedal-switch and I thought it would be easier to pluck the signal of both brakelights via the trunk. Bench-test your circuit first and apply power to the circuit, . . .  [Tony van Roon's circuit]

 

Logic Controlled 12v DC Motor With Automatic Brake -  There are times when you would like to control a DC motor using a simple +5v logic swing signal. The circuit below performs this feat and also includes an automatic motor braking circuit. This circuit will bring a fast moving DC motor to a stop in seconds. The braking action is automatically applied whenever DC power is removed . . . [Circuit by David Johnson P.E.,  02/18/10]

 

Loud 10-W Car Alarm Siren -  . . . 

 

Low battery cut-off circuit for a car or truck -  Also acts as a Master On / Off Switch. NOW A New P-Mos Version. Supplys Positive voltage to grounded devices. . .  [G.L. Chemelec]

 

Low Power-Ve Supply -  Low power -ve supply for car audio preamps and crossovers . . .  [Rod Elliott (ESP)]

 

LT3518 Full-Featured 45V, 2.3A Switch Current LED Driver-Video Product Brief -  The LT3518 is a current mode DC/DC converter with an internal 2. 3A, 45V switch specifically designed to drive LEDs. The LT3518 operates as a LED driver in boost, buck and buck-boost modes. It combines a traditional voltage loop and a unique current loop to operate as a constant-current source or constant-voltage source. Programmable . . .  [Linear Technology App Note, Steve Knoth-Senior Product Marketing Engineer Aug 25th 2010]

 

Make your own LED Headlamp -  I have submitted here my process for constructing an LED headlamp. I originally attempted to fit the battery holders for 3 AAA cells along with a tiny PC board for the three LEDs and current limiting resistor all in a tiny altoids tin. No go. I ended up buying a 3 cell holder with switch from Mouser electronics, gluing an elbow/ball joint pivot from a desktop pen set I had pieces from to that battery holder, then bolting the pivot to a Walgreens tiny mint tin (the sugar free ones come in a small oval shaped tin). The LEDs . . .  [Contributed by: John Evans]

 

Mark 1/1A -  This circuit is used to relay signals from an Infra Red remote control in one room to an IR controlled appliance in another room. . . .  [Andy Collison]

 

Mechatronic Throttle Drive -  STMicroelectronics-Application. . . 

 

        Next Page >>>> 


Automotive:  #'s       A-B       C-D       E-F       G-I        J-M       N-S      T-U      V-Z


HOME Schematics Index Hobby Corner Dave's Circuits Electronic Resources Contact Info
Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches


 About Us   |  Advertise on DiscoverCircuits.com   |   Report Broken Links  |    Link to DiscoverCircuits.com  |    Privacy Policy

Copyright  January, 1998 - November, 2017     David A. Johnson & Associates.  All Rights reserved. 
 Linking is ALLOWED but COPYING any content or graphics to your web site is EXPRESSLY PROHIBITED.