28176 Parallax Inc, 28176 Datasheet - Page 89
28176
Manufacturer Part Number
28176
Description
KIT PARTS PROCESS CONTROL W/TEXT
Manufacturer
Parallax Inc
Datasheet
1.122-28176.pdf
(330 pages)
Specifications of 28176
Accessory Type
Process Control
Product
Microcontroller Accessories
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
BASIC Stamp® 2 and Board of Education
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
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Chapter 3: Digital Input Conditioning · Page 79
voltage and the resistance of the collector for the configuration studied. The DC Load
Line is a graphical representation of output voltage and collector current over the linear
range.
The value of R
in a common-emitter configuration determines the saturation current,
C
and thus, the base current required to drive the BJT into saturation. The higher the value
of R
the more sensitive the transistor will be to base current. But high values of R
also
C
C
limit response and switching speeds of the transistor. The maximum power dissipated by
the transistor occurs when it is conducting ½ of saturation current, which leads to heating.
SOLUTIONS TO CHAPTER 3 CHALLENGES
Challenge 3-1 Solution
When the potentiometer supply leads are reversed, rotation will result in the opposite
direction of voltage change as compared to previously. For example, when rotated clock-
wise, the wiper of the potentiometer will be closer to Vdd as opposed to Vss previously.
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