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9780790611389

Power Supply Troubleshooting & Repair

by
  • ISBN13:

    9780790611389

  • ISBN10:

    0790611384

  • Edition: 1st
  • Format: Paperback
  • Copyright: 1998-08-01
  • Publisher: Prompt (DPI - 8/01)
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List Price: $126.95

Summary

This practical guide to switch-mode power supplies is designed to provide technicians with a better understanding of how power supplies operate. It also provides practical, useful procedures to follow when you are troubleshooting switch-mode power supplies.

Table of Contents

Introduction 1(7)
Switched-Mode Power Supplies: An Overview
7(30)
Types of Configuration
9(1)
Type of Controlling Device
9(1)
Type of Oscillator
9(1)
Type of Power Control
10(1)
Source of Secondary Feedback Voltage
10(1)
Seven Parts of a Switched-Mode Power Supply
10(21)
The Bridge Circuit
11(1)
The Oscillator Circuit
11(4)
Secondary Voltage Sources
15(1)
Sensing Circuit
16(1)
Error Signal Feedback Circuit
17(2)
Regulating Circuit
19(1)
Protection and Other Special Circuits
20(11)
Troubleshooting Tools
31(1)
Troubleshooting the Switched-Mode Power Supply
32(5)
Pulse Width-Controlled Discrete Switch Transistor Switched-Mode Power Supply
37(22)
Protection Circuits
40(1)
Troubleshooting Using the Block Diagram
41(8)
More, Special Protection Circuits
49(3)
75-Volt Overvoltage Protection
51(1)
Low-Frequency Protection Circuit
52(1)
More Troubleshooting Tips
52(7)
Free-Running Pulse-Width Controlled Switched-Mode Power Supply
59(28)
Types of Protection Circuits
62(1)
The Troubleshooting Sections
63(10)
C604 Not Positive
65(1)
Troubleshooting Full-Power Supply Failures
66(7)
When the TV is Turned On
73(1)
Checking the Protection Circuits
73(4)
Overcurrent and Overvoltage Protection Circuit
77(1)
Troubleshooting the Circuit
77(10)
No Voltage Potential on C604
78(1)
Negative Voltage Potential on C604
78(1)
Standby (Only VCR On)
79(1)
Checking the Feedback Circuitry
79(1)
Checking the Regulating Circuitry
80(1)
The Potential on C604 is Positive
80(2)
Failure Occurs in the Full-Power Mode (When the TV is Turned On)
82(5)
IC-Controlled, Fixed Frequency, Dual Switched-Mode Power Supply
87(30)
Standby Switched-Mode Power Supply Operation
89(2)
Standby Protection Circuit
91(1)
Full-Power Section Operation
91(2)
Full-Power Section Protection Circuits
92(1)
Standby Section of Controller IC401
93(5)
Full-Power Section of The IC Controller
98(1)
On/Off/Shutdown Controller IC Operation
99(3)
Standby Switched-Mode Power Supply Operation
102(4)
Troubleshooting the Standby Switched-Mode Power Supply Section
106(1)
Operation of the Full-Voltage Switched-Mode Power Supply Section
107(10)
Turning On the full-Power Section
109(2)
Checking the Full-Power Section Protection Circuits
111(1)
A Note on Troubleshooting the Full-Power Section
112(5)
IC-Controlled, Foixed-Frequency, Dual Switched-Mode Power Supply with Discrete Shutdown Circuit
117(28)
Operation of the Standby Section
118(4)
Operation of the Full-Power Supply Section
122(2)
Troubleshooting the Standby and Full-Power Sections of the IC Controller
124(12)
Standby Section of the IC Controller
128(3)
Full-Power Section of the IC Controller
131(5)
Troubleshooting the Standby Switched-Mode Power Supply
136(2)
Full-Power Switched-Mode Power Supply Section
138(7)
Protection Circuits
140(2)
Troubleshooting the Full-Power Section of IC401
142(1)
Checking Pin 2 of Optocoupler IC402
142(3)
IC-Controlled Switched-Mode Power Supply With Built-In Switch
145(18)
The Protection Circuit
148(1)
Troubleshooting
148(2)
The Circuit Schematic
150(13)
A Look at Linear Regulated Power Supplies
163(17)
IC410
167(7)
Protection Circuits
174(1)
Troubleshooting This Circuit
175(1)
Troubleshooting Problems
175(5)
Index 180

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