Keysight E3640A power supply, light gray benchtop unit with a green numeric display, Low and High range buttons, function keys, one control knob and a red and a black output terminal

Keysight E3640A Power Supply, Single Output, Dual Range, 8 V 3 A or 20 V 1.5 A, 30 W

Name: Keysight E3640A Power Supply, Single Output, Dual Range, 8 V 3 A or 20 V 1.5 A, 30 W
SKU: LIH-E3640A
Availability: InStock

The Keysight E3640A power supply is a compact single-output dual-range bench unit with 8 V at 3 A and 20 V at 1.5 A ranges, rated 30 W. Lost in HCM lists it for rental and sale.

SKU: LIH-E3640A

Category: Power supplies

Description

Small circuits deserve a small supply. The Keysight E3640A power supply is a compact bench unit with a single output and two ranges: 8 V at 3 A or 20 V at 1.5 A, within 30 W. Lost in HCM lists it for rental and sale in Vietnam.

Two ranges for low-power work

You choose Low or High with a front-panel button, then dial in the value. The low range gives more current, and the high range gives more voltage. At the maximums, the power works out to 24 W and 30 W.

What 30 W covers

A 30 W source handles sensor boards, small analog stages, microcontroller kits and similar loads. It will not drive a motor or a large amplifier. Therefore, add up the peak current of your device before you request the unit.

Why the Keysight E3640A power supply suits teaching benches

One knob, two range keys and a pair of terminals keep the learning curve short. Students see the set value on a clear numeric display, so they read results quickly. In addition, the single output keeps wiring simple, which reduces mistakes during the first lab sessions.

Quick selection guide for the Keysight E3640A power supply

For up to 3 A at low voltage, use the 8 V range.
Up to 20 V calls for the high range, with current at 1.5 A or less.
More current or voltage means a larger model.

Handling tips

First, turn the output off before you change leads. Also keep the unit dry and ventilated, since small bench supplies still run warm. When the rental ends, return it in its original packing or a padded case.

Give Lost in HCM your voltage, current and quantity, plus the start and end dates. Then request a quote from Lost in HCM. Look through more power supplies in this category, or find manuals on the Keysight website. Also, ask us anything via our contact page.

Questions on the E3640A

What are the two ranges?

Low range: 8 V with up to 3 A. High range: 20 V with up to 1.5 A.

Can it power a small motor?

Only if the motor stays well within 30 W, so check the rating. Check its start-up current first, because that peak is often higher than the running current.