3-C-022: Voltage Regulators, Zener Diodes
3-22C1:
In a linear electronic voltage regulator:
The conduction of a control element is varied in direct proportion to the line voltage or load current.
The output is a ramp voltage.
The pass transistor switches from the “off” state to the “on”" state.
The control device is switched on or off, with the duty cycle proportional to the line or load conditions.
3-22C2:
A switching electronic voltage regulator:
Switches the control device on or off, with the duty cycle proportional to the line or load conditions.
Varies the conduction of a control element in direct proportion to the line voltage or load current.
Provides more than one output voltage.
Gives a ramp voltage at its output.
3-22C3:
What device is usually used as a stable reference voltage in a linear voltage regulator?
Zener diode.
Tunnel diode.
SCR.
Varactor diode.
3-22C4:
In a regulated power supply, what type of component will most likely be used to establish a reference voltage?
Zener Diode.
Tunnel Diode.
Battery.
Pass Transistor.
3-22C5:
A three-terminal regulator:
Contains a voltage reference, error amplifier, sensing resistors and transistors, and a pass element.
Supplies three voltages with variable current.
Supplies three voltages at a constant current.
Contains three error amplifiers and sensing transistors.
3-22C6:
What is the range of voltage ratings available in Zener diodes?
2.4 volts to 200 volts and above.
1.2 volts to 7 volts.
3 volts to 2000 volts.
1.2 volts to 5.6 volts.
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