diode applications

Question 1

ideal diode model (forward bias )

Answer 1

Replace the diode with a short circuit symbol when it is forward bias

Question 2

constant voltage drop model ( forward bias )

Answer 2

Replace the diode with a DC battery symbol when it is forward bias and turned on

Question 3

ideal and constant voltage model ( reverse bias )

Answer 3

Regardless of the method (circuit model) used, when a diode is in reverse bias,
◦ replace it with open circuit symbol
◦ set ID value to 0mA

Question 4

diodes in series

Answer 4

When the diodes are connected in series, they
will all turn on or off together, depending on
the biasing condition.

Question 5

diodes in parallel

Answer 5

When the diodes are connected in
parallel, they will turn on or off
individually, depending on the
biasing condition.

Question 6

sinusodial wave

Answer 6

Peak Voltage: VP
Peak to Peak Voltage: VPP=2 x VP
RMS voltage: Vrms=0.7071 x VP
Average Value: VDC = 0V
Period: T
Frequency: f = 1/T (Hz)

Question 7

rectified positive half-wave

Answer 7

Average Value: VDC = 0.318 x VP

Question 8

rectified positive full-wave

Answer 8

Average Value:
VDC = 0.318 x VP x 2
= 0.636 x VP