We found this circuit in an old Mullard (Philips) documentation. The sensor consists of a reed-switch that is coupled to a magnet on one of the wheels of the vehicle.
This power supply for the ion generator in the previous circuit does not need to be regulated, providing...
Found in American documentation, this circuit for modulated infrared signals can be tuned to a...
The circuit shown is suggested by National Semiconductor in its 1994 Linear Applications Handbook. The...