In a switching circuit, the idea is to simulate, as near as possible, the ideal switch having the properties of open circuit when off, short circuit when on, and an instantaneous transition between the two states. Parameters are chosen such that the "off" output is limited to leakage currents too small to affect connected circuitry; the resistance of the transistor in the "on" state is too small to affect circuitry; and the transition between the two states is fast enough not to have a detrimental effect. COUNT 4
QSN1 How are parameters chosen in a switching circuit? ANS1 the "off" output is limited to leakage currents too small to affect connected circuitry QSN2 What is a switching circuit trying to simulate when on? ANS2 short circuit QSN3 What is a switching circuit trying to simulate when off? ANS3 open circuit QSN4 How quickly does the change from open circuit to short circuit happen? ANS4 instantaneous