CHAPTER 17 VOLTAGE REGULATORS

CHAPTER 17
VOLTAGE REGULATORS

1. The percentage change in the output voltage for a given change in the input voltage
Line regulation

2. The percentage change in output voltage for a given change in load current
Load regulation

3. Occurs when the internal power dissipation becomes excessive and the temperature of the device exceeds a certain value
Thermal Overload

4. An electronic circuit that maintains an essentially constant output voltage with a changing input voltage or load current
Regulator

5. Typical of three-terminal IC regulators that provide a fixed negative output voltage.
79XX

6. An example of a three-terminal positive regulator with an adjustable output voltage.
LM317

7. Negative output counterpart of the LM317
LM337

8. A universal device that can be used with external components to provide step-up, step-down, and inverting operation
78S40

9. A voltage regulator in which the control element operate as a switch
Switching regulator

10. Two basic types of linear regulators are
Series and shunt

11. In linear series regulator, the control element is a transistor in _______ with the load
Series

12. In linear shunt regulator, the control element is a transistor in _______ with the load.
Parallel

13. A change in input voltage does not significantly affect the output voltage of a regulator. (true/false)
True

14. Can be used as a current source when an application requires that a constant current be supplied to a variable load.
Three-terminal regulator

15. Amplitude modulation is a ____________________process
Multiplication

16. is one method used to overcome the bandwidth limitation of the telephone system so that digital data can be sent over the phone lines.
FSK