0195136047.pdf

PROBLEMS 443

VA
Vo

+VCC

VB
VC

RB

T 3

T 4

T 2

T 1

R 4

Figure P9.2.12TTL NAND gate.

Figure P9.3.1(a)n-channel JFET switch.

(b)Characteristics (transfer characteristics;

terminal characteristics and load line).(c)In-

put.