This candidate book provides all the theory needed for the new technical certificate and the NVQ at that level. The visual step-by-step style guides candidates of all abilities and keeps them motivated throughout. Examples are used to explain technical terms and theory.aO kO LED Phototransistor Figure 8.37 Opto-coupler circuit Opto-coupler package The opto-coupler package allows the ... Infrared beams have a receiver, which reacts to the beam in differing ways depending upon its use. Infrared ... The simplified block diagram in Figure 8.39 shows a system of communication, which can be several thousand kilometres in length. ... equivalent digital light signals by the optical transmitter via a miniature laser or LED at the end of the fibre optic cable.
|Publisher||:||Heinemann - 2005|