Electronics in control

Abstract

After this chapter you should

• understand how transistors can be used as switches

• understand that logic gates can control transistor switches

• understand how magnetic relay switches can be used to operate powerful devices

• understand the uses of input control, processor, and output transducer in electronics

• be familiar with truth tables for logic gates

• understand how potential dividers are used for input controls to logic gates

• know how a bistable circuit behaves

• know what components are used as sensors and for time delays.