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JWST499-Cetinkunt
JWST499-c05
ELECTRONIC COMPONENTS FOR MECHATRONIC SYSTEMS 277
(a)
(b)
FIGURE 5.18: Mechanical switch analogy for a transistor: (a) Current sinking connection
(sinking current from the load). Also called a low-side (output) switch. (b) Current sourcing
connection (sourcing current to the load). Also called a high side (output) switch.
= 10 V
V cc
A
Mechanical R = 100 Ω
L
switch
L
R = 1 kΩ
1
B C
E
= 10 kΩ
R 2
FIGURE 5.19: A transistor circuit used
as an electronic switch.
