System for identifying overheated components of moving railway vehicles
CA1279545C
Installation for conveying coins between an automatic payment machine anda coin processing station
ES8706991A1
An automatic toll collecting device and a cash box for the same.
GB8505552D0
Track circuit
CA1202073A
Process and device for eliminating the disturbances related to the fluctuations of the load in chopped power supplies
US4523265A
Process and device for eliminating the disturbances related to the fluctuations of the load in chopped power supplies
EP0128988A1
Method and device for eliminating interferences due to load variation in switched-mode power supplies
US4575672A
Chopped power supply converter
US4548220A
Device for checking metal pieces, more particularly coins
BR8302550A
Converter for discharge lamp power supplies and more general of arc lamps and its application in projectors intended for such lamps
EP0078722A1
Electronic power supply device taking from the network a sine-shaped current in phase with the voltage
EP0075503A1
Desk for an automatic telephone switching system
FR2519491A1
Signal generator for FSK and PSK transmission system - has elementary phase increments as ratio of integers times 2 pi radians determined by waveband, and clock frequency
EP0050535A1
Railway track circuit
US4412154A
Start up frequency adjustment in an electronic power device for a discharge lamp
EP0022693A1
Electronic device for intrusion detection in an area
US4349170A
Safety coding process for track circuits
CA1129483A
Converter for supplying discharge lamps, and more generally arc lamps and its application to projectors for such lamps
ZA7803211B
Electrical block separating joints for railway signalling systems
