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90B
manual
Reverse Current Loading Solution
Models:
90B
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125 pages
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Output characteristic
Input AC Wire Rating
Check Voltage Control Setting
Transient recovery 107
Resolution
Ambient Temperature
Precautions
Power Supply Handbook
Switching Regulation
Page 94
Image 94
Figure 64B. Reverse Current Loading Solution.
Figure 65.
Center-tapped
Power Supply Output
95
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Image 94
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Contents
Power Supply Handbook
Table of Contents
Protection Circuits for Linear Type Supplies
101
Ambient Temperature
Automatic Auto Parallel Operation
AUTO-SERIES Power Supply System
Automatic Auto Tracking Operation
AUTO-TRACKING Power Supply System Carryover Time
Constant Current Power Supply
Complementary Tracking
Page
Page
Drift
Crowbar Circuit
Current Foldback
Efficiency
Output Impedance of a Power Supply
Load Effect Transient Recovery Time
OFF-LINE Power Supply
Load Effect Load Regulation
DC Output of Power Supply Superimposed Pard Component
Remote Programming Remote Control
Programming Speed
Resolution
Remote Sensing Remote Error Sensing
Source Effect Line Regulation
Stability see Drift Temperature Coefficient
Warm UP Time
Principles of Operation
Regulating Techniques
Series Regulation
Typical Series Regulated Power Supply
Pros and Cons of Series Regulated Supplies
Series Regulated Supply An Operational Amplifier
Operational Amplifier
Errp = Esrp + Esrr -EORR
Operational Amplifier with DC Input Signal
Series Regulator with Preregulator
Constant Voltage Power Supply with SCR Preregulator
Switching Regulation
SCR Conduction Angle Control of Preregulator Output
Basic Switching Supply
Basic Switching Supply
Typical Switching Regulated Power Supplies
Switching Regulated Constant Voltage Supply
Switching Supply with Preregulator
Summary of Basic Switching Regulator Configurations
Single Transistor Switching Regulator
Basic Switching Regulator Configurations
SCR Regulation
SCR Regulated Power Supply
Ideal Constant Current Power Supply Output Characteristic
Constant Current Power Supply
Constant Voltage/Constant Current CV/CC Power Supply
Constant VOLTAGE/CURRENT Limiting Supplies
Current Limit
Current Limiting Characteristic
Current Foldback
Protection Circuits
Protection Circuits for Linear Type Supplies
Overvoltage Crowbar Circuit Details
Protection Circuits, Linear Type Supply
Typical Crowbar Overvoltage Protection Circuit
Crowbar Response Time
Crowbar Response
Special Purpose Power Supplies
High Voltage Power Supply
Piggy-back Power Supply
Precision Voltage Sources
High Performance Power Supplies
Precision Constant Current Source
An Ideal Current Source
Impedances Shunting the Load Degrade Current Regulation
Precision Current Source Block Diagram
Page
Extended Range Power Supplies
Advantages of Extended Range
Example of Extended Range Power Supply
Extended Range Power Supply Using Tap Switching
Output Power Plot
Faster Down-Programming Speed
Bipolar Power Supply
Bipolar Power Supply/Amplifier
Amplifier
Digitally Controlled Power Sources
Digital Voltage Source DVS
Bipolar Power Supply/Amplifier Drawn as an Amplifier
Page
Digital Current Source DCS
AC Power Input Connections
Checklist for AC and Load Connections
Load Connections for One Power Supply
Load Connections for Two or More Power Supplies
AC Power Input Connections
Autotransformers
Input AC Wire Rating
Load Connections for ONE Power Supply
Line Regulators
DC Distribution Terminals
Improper Load Connections
Load Wire Rating
Location of DC Distribution Terminals with Remote Sensing
Load Decoupling
Power Supply and Load Wiring Equivalent Circuits
Ground Loops
Local Decoupling Capacitors
Isolating Ground Loop Paths from DC System
DC Common
Preferred Ground Connections for Single Isolated Load
Preferred Ground Connections for Single Grounded Loads
Ground Connections for Multiple Loads, One Grounded
Ground Connections for Multiple Loads, Two or More Grounded
Remote Error Sensing Constant Voltage Operation Only
DC Ground Point
Regulated Power Supply with Remote Error Sensing
Constant Voltage Regulator with Remote Error Sensing
Remote Sensing Connections
Protecting Against Open Sensing Leads
Remote Sensing Connections
Remote Sensing Protection with Resistors
Load Wire Ratings
Output Oscillation
Load Connections for TWO or More Power Supplies
Proper Current Limit Operation
DC Common
Remote Programming
Constant Voltage Remote Programming with Resistance Control
Remote Programming Connections
Output Drift
Protecting Against Momentary Programming Errors
Remote Programming Connections
Backup Protection for Open Programming Source
Remote Programming Switching Circuits
Constant Voltage Remote Programming with Voltage Control
Programming with Unity Voltage Gain
Programming with Variable Voltage Gain
Voltage Programming with Variable Voltage Gain
Constant Current Remote Programming
Remote Programming Accuracy
Ideal Remote Programming Characteristics
Remote Programming Speed
Speed of Response--Programming Up
Speed of Response Programming Down
Output Voltage and Current Ratings
Duty Cycle Loading
Short-term Overload Equivalent Circuit and Output Voltage
Reverse Current Loading
Dual Output Using Resistive Divider
Reverse Current Loading Problem
Reverse Current Loading Solution
Parallel Operation
Auto Parallel Operation
Series Operation
AUTO-SERIES Operation
Auto-Series Operation of Two Supplies
Auto Tracking Operation
Auto-Tracking of Two Supplies
Converting a CV Supply to CC Output
Connect Leads to Power Supply Terminals Properly
Constant Voltage Power Supply Measurements
Precautions
Measure Performance at Front or Rear Terminals
Use Separate Leads to All Measuring Instruments
Use an Adequate Load Resistor
Check Current Limit Control Setting
Check Setup for Pickup and Ground Loop Effects
Do Not Use an AC Input Line Regulator
Connect AC Voltmeter Properly
Use an Auto-Transformer of Adequate Current Rating
CV Source Effect Line Regulation
CV Pard Ripple and Noise
Measurement of Pard Ripple and Noise for a CV Supply
Three Ideal Ripple Waveshapes
Noise Spike Measurements
Measurement of Noise Spikes
109
Automatic Load Switch for Measuring Transient Recovery Time
CV Drift Stability
CV Temperature Coefficient
CV Programming Speed
CV Programming Speed Test Setup
Constant Current Power Supply Measurements
CV Output Impedance
RM Must be Treated as a Four-Terminal Device
Use Precision, Low T. C. Monitoring Resistor
Keep Temperature of RM Constant
Check Voltage Control Setting
CC Load Effect Load Regulation
CC Source Effect Line Regulation
CC Pard Ripple and Noise
CC Load Effect Transient Recovery Time
CC Drift Stability
Measurement of Pard for a CC Power Supply
CC Temperature Coefficient
Other Constant Current Specifications
Index
Output characteristic
Remote
Measurement method 112
Transient recovery 107
119
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