130-28176 Parallax Inc, 130-28176 Datasheet - Page 92
130-28176
Manufacturer Part Number
130-28176
Description
KIT PARTS PROCESS CONTROL
Manufacturer
Parallax Inc
Specifications of 130-28176
Accessory Type
Education Kit
Product
Microcontroller Accessories
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
Board of Education Full Kit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
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Challenge 3-6 Solution
Challenge 3-7 Solution
•
•
I
I
I
I
I
I
When S1 is open, the relay is de-energized and contacts K1 are closed. P8
senses LOW.
When S1 is closed, the relay is energized and contacts K1 open. P8 senses
HIGH.
B
B
C
SAT
SAT
C
= (V
= (5 V− 0.7)/((100)(100 Ω) + 47 kΩ) = 0.075 mA
= I
> I
= (Vdd − 0.3)/R
= (5 V − 0.3 V)/100 Ω = 4.7 mA
B
SAT
I
x h
− 0.7)/( h
. Saturation current can be reached.
FE
= (0.075 mA)(100) = 7.5 mA
FE
R
E
E
+ R
B
)
Figure 3-27
Completed Drawing
Do Not Build
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