Lab 7 (1st week) Report Instructions
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The lab report should be segmented in 5 parts:
o BJT Parameters
o BJT Inverter
o BJT Inverter with Emitter Resistor
o BJT Voltage Follower
o BJT Current Follower
Parameters:
o Plot VIcurve for BJT. Use the schematic on the .vi screen, not inverter
diagram. There is no load line, but you will use this plot in other parts
when plotting the different load lines.
o Calculate DC current gain from VI curves
o Calculate transconductance.
o Calculate AC current gain
o Calculate input resistance
o Calculate output resistance
o Calculate saturation Voltage
Inverter:
o Plot VI curve for BJT with load line, show load line equation used.
o Sketch (by hand, PSpice or any drawing program) the inverter circuit.
o Plot Vout vs. Vin curve (Transfer Characteristics curve) for Inverter, show
constant region range (Vinmin-Voutmax,Voutmin-Voutmax) and gain computed
from slope.
o Show Vinmidlle & Voutmidlle in constant region.
o Show AC gain obtained from Oscilloscope readings, and VoutDC value,
IoutDC equation and value.
o Show Vin value to achieve Vout clipping, explain why clipping occurred at
this value.
Inverter with Emitter Resistor:
o Plot VI curve for BJT with load line, show load line equation used.
o Sketch (by hand, PSpice or any drawing program) the inverter with emitter
resistor circuit.
o Plot Vout vs. Vin curve (Transfer Characteristics curve) for Inverter, show
constant region range (Vinmin-Voutmax,Voutmin-Voutmax) and gain computed
from slope, explain the difference from the inverter result above.
o Show Vinmidlle & Voutmidlle in constant region.
o Show AC gain obtained from Oscilloscope readings, and VoutDC value,
IoutDC equation and value.
o Show Vin value to achieve Vout clipping, explain why clipping occurred at
this value.
Voltage Follower:
o Plot VI curve for BJT with load line, show load line equation used.
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Sketch (by hand, PSpice or any drawing program) the voltage follower
circuit.
o Plot Vout vs. Vin curve (Transfer Characteristics curve) for Inverter, show
constant region range (Vinmin-Voutmax,Voutmin-Voutmax) and gain computed
from slope, explain the difference from the two circuits results above.
o Show Vinmidlle & Voutmidlle in constant region.
o Show AC gain obtained from Oscilloscope readings, and VoutDC value,
IoutDC equation and value.
o Show Vin value to achieve Vout clipping, explain why clipping occurred at
this value.
Current Follower:
o Plot VI curve for BJT with load line, show load line equation used.
o Sketch (by hand, PSpice or any drawing program) the voltage follower
circuit.
o Plot Vout vs. Vin curve (Transfer Characteristics curve) for Inverter, show
constant region range (Vinmin-Voutmax,Voutmin-Voutmax) and gain computed
from slope, explain the difference from the two circuits results above.
o Show Vinmidlle & Voutmidlle in constant region.
o Show AC gain obtained from Oscilloscope readings, and VoutDC value,
IoutDC equation and value.
o Show Vin value to achieve Vout clipping, explain why clipping occurred at
this value.