diodes and rectifiers Flashcards
Solid state devices have a number system established by the Joint Electron Device Engineering Council (JEDEC). What does the designation (1N2002) mean?
The 1N before a series of numbers means one junction.
The illustration represents a PIN diode in reverse bias.
pos ā>Iā neg
Most diodes conduct heavily in ? and present a high resistance in ? .
forward bias / reverse bias
The diode in the circuit is reverse biased.
true
Any current that flows in the circuit is called the ? current.
leakage
Which of the following are ways that diodes can be used in signal and power circuits?
Detectors of radio waves
Logic functions
Signal mixers
Switching
A ? diode can be used as an oscillator or amplifier.
tunnel diode
A diode that is voltage sensitive and acts as a variable capacitor is called a ? .
Varactor diode
When a silicon diode is forward biased, it does not begin to conduct until about ? is applied across the diode.
.7 v
Diodes have a surface barrier voltage that opposes the forward bias voltage. This voltage must be overcome by the bias before the diode conducts.
If a silicon diode is used in this circuit and the battery has 12 volts, what are the expected voltages across the load and across the diode?
11.3 V across the load and 0.7 V across the diode
What happens if the peak inverse voltage (PIV) rating of a diode is exceeded?
The diode breaks down and a high current flows in the reverse direction destroying the diode
Diodes designed to operate at the PIV rating are called ? diodes.
Zener
Which of the following is not one of the major electrical characteristics for rectifiers?
Nominal Reverse Voltage (NRV)
With a 60-hertz line frequency applied to a full-wave rectifier, the output ripple frequency is ? .
120 hz
In a half-wave rectifier, the diode only conducts when the anode is positive in respect to the cathode.
true
