The Keysight Technologies (formerly Agilent / HP) E3630A is a compact and reliable 35-watt triple-output linear DC power supply. Designed specifically for benchtop manual testing, it provides low noise, stable output voltages, and built-in auto-tracking of the ±20V outputs to simplify circuit testing that requires balanced positive and negative voltages.

Specifications

General

ParameterValue
InterfacesNone (manual analog control only)
DisplayDual 3-digit LED displays

Physical

ParameterValue
Operating Temperature0 to 40 °C
Dimensions (W×H×D)213 mm × 91 mm × 318 mm
Weight3.8 kg

Output Ratings

ParameterValue
Number of Outputs3
Output 1 Voltage Range0 to +6 V
Output 1 Current Range0 to 2.5 A
Output 2 Voltage Range0 to +20 V
Output 2 Current Range0 to 0.5 A
Output 3 Voltage Range0 to -20 V
Output 3 Current Range0 to 0.5 A
Total Output Power35 W
Tracking Operation Range0 to ±20 V (auto-tracking)

Load and Line Regulation

ParameterValue
Load Regulation Voltage (+6V Output)< 0.01% + 2 mV
Load Regulation Voltage (±20V Outputs)< 0.01% + 2 mV
Line Regulation Voltage (+6V Output)< 0.01% + 2 mV
Line Regulation Voltage (±20V Outputs)< 0.01% + 2 mV

Ripple and Noise

ParameterValue
Normal Mode Voltage Ripple (RMS)< 350 µV
Normal Mode Voltage Ripple (Peak-to-Peak)< 1.5 mV

Transient Response and Stability

ParameterValue
Transient Recovery Time< 50 µs for output to recover within 15 mV after a change from full load to half load

User Interface and Metering

ParameterValue
Display Meter TypeDual 3-digit LED displays
Meter Accuracy±0.5% + 2 counts at 25°C ± 5°C
Output Control StyleAnalog potentiometers (+6V Voltage, ±20V Voltage, Ratio/Track)
Auto-Tracking Ratio RangeContinuously variable from 0 to 1:1

Protection and Isolation

ParameterValue
±20V Output Overload ProtectionFixed current limiting (starts at 0.55 A)
Overload IndicatorsOne LED indicator

Power Requirements

ParameterValue
AC Input Voltage Options100 Vac / 115 Vac / 230 Vac (±10%, option dependent)
AC Input Frequency Range47 to 63 Hz
Maximum Input Power114 VA

Environmental Specifications

ParameterValue
Cooling MechanismConvection cooling (fanless)

Physical Characteristics

ParameterValue
Output Terminals5-way binding posts
Binding Post Spacing19 mm (0.75 in)

Protection

ParameterValue
+6V Output Current Limit TypeFoldback
+6V Output Short-Circuit Currentapprox. 1.0 A
±20V Output Current Limit TypeFixed current limiting
Overvoltage Protection (OVP)Not supported
Overcurrent Protection (OCP)Not supported (current limiting only)

User Interface & Controls

ParameterValue
Number of Analog Meters0

Inputs & Outputs

ParameterValue
Remote SensingLocal sensing only

Technology

Linear

Applications

Benchtop DC power supply for electronics prototyping, testing, and design