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Digital Radar Speedometer - This circuit is a Digital Radar
Speedometer. It allows us to evaluate the speed of any object moving,
especially cars and other vehicles. The speed is calculated in kilometers ….
Economy radar detector - This circuit uses a 1458 dual op-amp to
form a radar detector. C1 is the detector of the radar signal. The first
op-amp forms a current-to-voltage converter and the second op-amp
buffers....(circuit added 06/08)
Radar Detector - This circuit uses a 1458 dual op-amp to form a radar
detector. C1 is the detector of the radar signal. The first op-amp forms a
current-to-voltage converter and the second op-amp buffers the output to drive the
piezo transducer. R5 sets the switching threshold of the second op-amp;
normally....(circuit added 06/08)
Radar Speedometer - This circuit is a Radar Speedometer. It allows us to
evaluate the speed of any object moving, especially cars and other vehicles. The speed
is calculated in kilometers per hour (KPH). Its display has three digits. This
radar works with the laser reflexion. It sends laser radiation to the object and this
object reflects the laser radiation ….
Speed-limit Alert - Wireless portable unit. Adaptable with most
internal combustion engine vehicles. (electronic circuit added 06/07/08)
Ultrasonic radar - This is a very interesting project with many practical
applications in security and alarm systems for homes, shops and cars. It consists of a
set of ultrasonic receiver and transmitter which operate at the same frequency. When
something moves in the area covered by....(electronic design added 09/06)
Unusual Radar Detector - The microwave diodes are chopper-gated by a
multivibrator so the RF signal level can be detected by an audio frequency
amplifier….. [Reverse engineered schematic by Stepan Novotill]
