medical circuits and troubleshooting (chapter 37
Questions and Answers) 2024
State three ways in which transistors are used? ** Answ** Control current, switches,
amplifiers
What are two main families of transistors? ** Answ** Bipolar-junction transistors
BJTs/ field effect transistors FETs
What two ways is the base region of a bipolar Junction transistor different from that of
an emitter and collector? ** Answ** The base is much thinner and has fewer doped
atoms
for what purpose is the base region used ** Answ** to control current flow through
the transistor
Draw the schematic symbol and identify the leads of a PNP and NPN bipolar Junction
transistor ** Answ**
What is the basic difference between an NPN and PNP bipolar Junction transistor
circuit? ** Answ** The arrow on the emitter is swapped- goes OUT on NPN and IN
on PNP
name the two Junctions found within the BJT? ** Answ** Emitter-base Junction, and
collector-base Junction
state the type of biasing used for each Junction in order to produce the required
transistor action? ** Answ** The emitter base junction is connected to forward bias
and the collector base junction is connected to reverse bias
Compare the normal current flow through forward bias and reverse bias Junction? **
Answ** Forward bias has current flow→ reverse bias has no current flow
What determines the amount of collector current flow? ** Answ** The base current
With no base current flow how much collector current flows? ** Answ** None
What does this small increase in base current flow result? ** Answ** Large increase
in collector current
What is the operating current range for the base compared to that of the collector? **
Answ** 1/10 of collector current
State two ways in which power transistor packages differ from small signal types? **
Answ** Larger cases and have heat sinks
For assistance with assignments contact
Questions and Answers) 2024
State three ways in which transistors are used? ** Answ** Control current, switches,
amplifiers
What are two main families of transistors? ** Answ** Bipolar-junction transistors
BJTs/ field effect transistors FETs
What two ways is the base region of a bipolar Junction transistor different from that of
an emitter and collector? ** Answ** The base is much thinner and has fewer doped
atoms
for what purpose is the base region used ** Answ** to control current flow through
the transistor
Draw the schematic symbol and identify the leads of a PNP and NPN bipolar Junction
transistor ** Answ**
What is the basic difference between an NPN and PNP bipolar Junction transistor
circuit? ** Answ** The arrow on the emitter is swapped- goes OUT on NPN and IN
on PNP
name the two Junctions found within the BJT? ** Answ** Emitter-base Junction, and
collector-base Junction
state the type of biasing used for each Junction in order to produce the required
transistor action? ** Answ** The emitter base junction is connected to forward bias
and the collector base junction is connected to reverse bias
Compare the normal current flow through forward bias and reverse bias Junction? **
Answ** Forward bias has current flow→ reverse bias has no current flow
What determines the amount of collector current flow? ** Answ** The base current
With no base current flow how much collector current flows? ** Answ** None
What does this small increase in base current flow result? ** Answ** Large increase
in collector current
What is the operating current range for the base compared to that of the collector? **
Answ** 1/10 of collector current
State two ways in which power transistor packages differ from small signal types? **
Answ** Larger cases and have heat sinks
For assistance with assignments contact
