122-28176 Parallax Inc, 122-28176 Datasheet - Page 76

• Manufacturer Part Number: 122-28176
• Description: GUIDE STUDENT PROCESS CONTROL
• Manufacturer: Parallax Inc

Specifications of 122-28176

• Accessory Type: Manual
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: Propeller Education (PE) Kit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

Keep in mind that when using the transistor as a switch (in saturation or cutoff), the
maximum power occurs only during the transition so that the power dissipated will be
very low. The more frequently the transition occurs (frequency), the more the transistor
is passing through the active region; therefore, the higher the average power that is being
dissipated.
Challenge 3-4: Calculating Current and Power
Given a 2N3904 transistor with a collector supply voltage of 40 V and R
calculate I
generation?
ACTIVITY #5: EFFECTS OF RESISTOR SIZING
R
the response of the circuit, how quickly it can respond to input changes.
Parts Required
Circuit from Activity #4
(1) Resistor – 10 kΩ
StampPlot calculates and plots the DC Load Line for this value of R
see a sample image in Figure 3-14.
The Load Line is a graphical representation of V
when in cutoff, V
maximum, based on the size of R
power of the transistor (P
the maximum.
C
size plays a big role in the circuit by defining I
√
√
√
√
√
Begin with the circuit from Activity 3, Figure 3-12 with ADC-IN connected to
V
Run the program DataMonitoring.bs2.
Run the StampPlot macro sic_pc_load_line.spm.
Connect and plot.
Adjust the potentiometer slowly between its minimum and maximum values.
CE
SAT
.
and P
CE
Q1 MAX
is at the supply voltage of 5 V. When in saturation, I
Q1
. Is there a concern based on power consumption and heat
) is plotted. Note the shape of the curves and when power is
C
and Vdd. Furthermore, based on I
CE
SAT
to I
C
and power. It also plays a role in
over the linear region. Note that
C
(1 kΩ). You can
C
and V
C
of 500 Ω,
C
CE
is at
, the