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.
Suggested by Motorola in 1968 documentation, this circuit has an efficiency of 70%. Power...
Toshiba LDO Regulators Toshiba has a wide variety of low voltage drop (LDO) linear regulators...
Found in a 90s Popular Electronics, this Hartley oscillator uses an output transformer of the type...