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Agilent Technologies 90B manual Reverse Current Loading Solution

Models: 90B

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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

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Figure 64B. Reverse Current Loading Solution.

Figure 65. Center-tapped Power Supply Output

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Agilent Technologies 90B manual Reverse Current Loading Solution

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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 TimeConstant Current Power Supply Complementary TrackingPage Page Drift Crowbar CircuitCurrent Foldback Efficiency Output Impedance of a Power Supply Load Effect Transient Recovery TimeOFF-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 SensingSource 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 SuppliesPrecision 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/AmplifierAmplifier 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 ConnectionsLoad Connections for One Power Supply Load Connections for Two or More Power Supplies AC Power Input Connections Autotransformers Input AC Wire RatingLoad 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 MeasurementsPrecautions 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 ProperlyUse 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 CoefficientCV 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 RegulationCC 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 Our Promise

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