New & Used Trolleys, Trams, Welcome to Specialty Vehicles, the preeminent source of new and used trolleys, trams, electric shuttles, and other types of people movers. Since 1982, we have manufactured, distributed and sold our diversified line of vehicles to clients in an array of different industries.
Automotivecircuits use two types of signals:â¢INPUT-provides information about operating conditions(switches, sensors)â¢OUTPUT-causes an electrical or electronic device to operate(lamps, LEDs, relays, motors)Input and output signals can be either digital or analog, depending onthe application.
1) In electronics, a signal is an electric current or electromagnetic field used to convey data from one place to another. The simplest form of signal is a direct current (DC) that is switched on and off; this is the principle by which the early telegraph worked. More complex signals consist of an alternating-current (AC) or electromagnetic carrier that contains one or more data streams.