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Agilent Technologies 90B manual Power Supply Handbook

Models: 90B

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POWER SUPPLY HANDBOOK

Application Note 90B

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Agilent Technologies 90B manual Power Supply Handbook

Contents

Power Supply Handbook Table of Contents Protection Circuits for Linear Type Supplies 101 Automatic Auto Parallel Operation Ambient TemperatureAUTO-SERIES Power Supply System Constant Current Power Supply AUTO-TRACKING Power Supply System Carryover TimeAutomatic Auto Tracking Operation Complementary TrackingPage Page Current Foldback Crowbar CircuitDrift EfficiencyOFF-LINE Power Supply Load Effect Transient Recovery TimeOutput Impedance of a Power Supply Load Effect Load RegulationDC Output of Power Supply Superimposed Pard Component Programming Speed Remote Programming Remote ControlResolution Remote Sensing Remote Error SensingSource Effect Line Regulation Warm UP Time Stability see Drift Temperature CoefficientPrinciples of Operation Series Regulation Regulating TechniquesPros and Cons of Series Regulated Supplies Typical Series Regulated Power SupplyOperational Amplifier Series Regulated Supply An Operational AmplifierErrp = Esrp + Esrr -EORR Operational Amplifier with DC Input Signal Series Regulator with Preregulator Constant Voltage Power Supply with SCR Preregulator SCR Conduction Angle Control of Preregulator Output Switching RegulationBasic Switching Supply Basic Switching SupplyTypical Switching Regulated Power Supplies Switching Regulated Constant Voltage Supply Switching Supply with Preregulator Single Transistor Switching Regulator Summary of Basic Switching Regulator ConfigurationsSCR Regulation Basic Switching Regulator ConfigurationsSCR Regulated Power Supply Ideal Constant Current Power Supply Output Characteristic Constant Current Power Supply Constant Voltage/Constant Current CV/CC Power Supply Current Limit Constant VOLTAGE/CURRENT Limiting SuppliesCurrent Foldback Current Limiting CharacteristicProtection Circuits for Linear Type Supplies Protection CircuitsProtection Circuits, Linear Type Supply Overvoltage Crowbar Circuit DetailsTypical Crowbar Overvoltage Protection Circuit Crowbar Response Time Crowbar Response High Voltage Power Supply Special Purpose Power SuppliesPiggy-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 Advantages of Extended Range Extended Range Power SuppliesExample of Extended Range Power Supply Extended Range Power Supply Using Tap Switching Faster Down-Programming Speed Output Power PlotBipolar Power Supply Bipolar Power Supply/AmplifierAmplifier Digital Voltage Source DVS Digitally Controlled Power SourcesBipolar 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 AC Power Input Connections Load Connections for Two or More Power SuppliesLoad Connections for ONE Power Supply Input AC Wire RatingAutotransformers Line RegulatorsImproper Load Connections DC Distribution TerminalsLocation of DC Distribution Terminals with Remote Sensing Load Wire RatingLoad Decoupling Ground Loops Power Supply and Load Wiring Equivalent CircuitsLocal Decoupling Capacitors Isolating Ground Loop Paths from DC System Preferred Ground Connections for Single Isolated Load DC CommonPreferred Ground Connections for Single Grounded Loads Ground Connections for Multiple Loads, One Grounded Ground Connections for Multiple Loads, Two or More Grounded DC Ground Point Remote Error Sensing Constant Voltage Operation OnlyRegulated Power Supply with Remote Error Sensing Remote Sensing Connections Constant Voltage Regulator with Remote Error SensingRemote Sensing Connections Protecting Against Open Sensing LeadsRemote Sensing Protection with Resistors Output Oscillation Load Wire RatingsProper Current Limit Operation Load Connections for TWO or More Power SuppliesDC Common Constant Voltage Remote Programming with Resistance Control Remote ProgrammingOutput Drift Remote Programming ConnectionsRemote Programming Connections Protecting Against Momentary Programming ErrorsRemote Programming Switching Circuits Backup Protection for Open Programming SourceProgramming with Unity Voltage Gain Constant Voltage Remote Programming with Voltage ControlVoltage Programming with Variable Voltage Gain Programming with Variable Voltage GainRemote Programming Accuracy Constant Current Remote ProgrammingIdeal Remote Programming Characteristics Remote Programming Speed Speed of Response--Programming Up Speed of Response Programming Down Duty Cycle Loading Output Voltage and Current RatingsShort-term Overload Equivalent Circuit and Output Voltage Reverse Current Loading Reverse Current Loading Problem Dual Output Using Resistive DividerReverse Current Loading Solution Auto Parallel Operation Parallel OperationAUTO-SERIES Operation Series OperationAuto-Series Operation of Two Supplies Auto-Tracking of Two Supplies Auto Tracking OperationConverting a CV Supply to CC Output Precautions Constant Voltage Power Supply MeasurementsConnect Leads to Power Supply Terminals Properly Measure Performance at Front or Rear TerminalsUse an Adequate Load Resistor Use Separate Leads to All Measuring InstrumentsCheck Setup for Pickup and Ground Loop Effects Check Current Limit Control SettingUse an Auto-Transformer of Adequate Current Rating Connect AC Voltmeter ProperlyDo Not Use an AC Input Line Regulator CV Source Effect Line RegulationCV Pard Ripple and Noise Measurement of Pard Ripple and Noise for a CV Supply Three Ideal Ripple Waveshapes Measurement of Noise Spikes Noise Spike Measurements109 Automatic Load Switch for Measuring Transient Recovery Time CV Drift Stability CV Temperature CoefficientCV Programming Speed CV Programming Speed Test Setup CV Output Impedance Constant Current Power Supply MeasurementsUse Precision, Low T. C. Monitoring Resistor RM Must be Treated as a Four-Terminal DeviceCheck Voltage Control Setting Keep Temperature of RM ConstantCC Load Effect Load Regulation CC Source Effect Line RegulationCC Pard Ripple and Noise CC Drift Stability CC Load Effect Transient Recovery TimeMeasurement of Pard for a CC Power Supply Other Constant Current Specifications CC Temperature CoefficientIndex Output characteristic Remote Measurement method 112 Transient recovery 107 119 Our Promise