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Low Power Negative Car Power Supply – Circuit Schematic
Low Power Negative Car Power Supply
I have had a lot of queries about getting a low power negative supply in cars, to power Linkwitz transform circuits and the like. There is a switchmode convert...
Speed-limit Alert – Circuit Schematic
Speed-limit Alert
This circuit has been designed to alert the vehicle driver that he/she has reached the maximum fixed speed limit (i.e. in a motorway). It eliminates the necessi...
Wide Band Fuel Mixture Display – Circuit Schematic
Wide Band Fuel Mixture Display
This document is an introduction to the Wideband Fuel Mixture Display (FMD). We modified the original Silicon Chip Fuel Mixture Display (that used a narrowband ...
Headlights Timer – Circuit Schematic
Headlights Timer
This device is a simple timer, allowing to keep on the headlights of your vehicle for about 1min. and 30sec., e.g. when accessing some dark place, without the n...
Park-Aid – Circuit Schematic
Park-Aid
This circuit was designed as an aid in parking the car near the garage wall when backing up. LED D7 illuminates when bumper-wall distance is about 20 cm., D7+D6...
BMW R Series Motorcycle Regulator Schematic – Circuit Schematic
BMW R Series Motorcycle Regulator Schematic
Correctly adjusted, the voltage on the pot wiper is slightly less than half D+ (appx. 0.47*D+) and Q1 will conduct if (D+)-(Vp)>6.2+0.7+0.7, or 0.53*(D+) &gt...