Good news - we're open for limited services in Wembley. Ujima House is now actively under refurbishment and we'd love your help in making the space the best it can be.

Please pay attention to the main LHS mailing list or pop into our #london-hack-space IRC channel and say hello.

During this interim period donations and continued membership are greatly appreciated while we transition to our new space.

Equipment/HP E3631A

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HP Power Supply
HP E3631A PSU.jpg
Model E3631A
Sub-category Test equipment
Status Good working order
Last updated 29 May 2013 22:22:23
Accessories Unknown
Training requirement no
ACnode no
Origin Simon Klyne
Location Ground Floor, Electronics area


The space now has a Hewlett Packard E3631A 80W Triple Output Power Supply, 6V, 5A & ±25V, 1A bench power supply which lives on the soldering bench.

It's programmable over RS232 or GPIB/HPIB ports on the back and there is an extensive manual for it .

Key Features & Specifications

Output Ratings

  • Output 1: 0 to 6 V, 0 to 5 A
  • Output 2: 0 to +25 V, 0 to 1 A
  • Output 3: 0 to -25 V, 0 to 1 A

Programming Accuracy at 25°C ±5°C

  • Voltage: 0.05% + 20 mV, 0.05% + 20 mV, 0.1% + 5 mV
  • Current: 0.15% + 4 mA, 0.15% + 4 mA, 0.2% + 10 mA

Ripple & Noise (20 Hz to 20 MHz)

  • Normal Mode Voltage: <350 µVrms/ 2 mV p-p, <350 µV rms/2 mV p-p, <350 µV rms/2 mV p-p
  • Normal-mode current: <500 µA rms, <500 µA rms, <2 mA rms
  • Common-mode current: <1.5 µA rms, <1.5 µA rms, <1.5 µA rms

Readback Accuracy at 25°C ±5°C

  • Voltage: 0.05% + 10 mV, 0.05% + 10 mV, 0.1% + 5 mV
  • Current: 0.15% + 4 mA, 0.15% + 4 mA, 0.2% + 10 mA