Description
Logic boards, small motors and charger tests ask for current more than voltage. The Keysight E3644A power supply answers with up to 8 A at 8 V from one 80 W output. Lost in HCM lists it for rental and sale in Vietnam.
Current first, voltage second
First, Keysight’s page lists two ranges. The low range covers 0 to 8 V at up to 8 A, and the high range covers 0 to 20 V at up to 4 A. At 8 V and 8 A the load draws 64 W. Meanwhile, at 20 V and 4 A it reaches the full 80 W. Both ends therefore fit inside the rating, so you never need to worry about the Keysight E3644A power supply running out of power at either range.
Low-voltage jobs for the Keysight E3644A power supply
- 5 V and 3.3 V logic boards that pull several amps under load.
- Small DC motors, fans and pumps during bring-up.
- 12 V automotive accessories on the bench, since 12 V sits inside the 20 V range.
- Burn-in of modules that need steady current for hours.
Also, one output keeps the bench simple, because you route only one lead pair.
Control and noise
Also, the listing shows GPIB and RS-232 for remote control. In addition, Keysight quotes normal-mode ripple and noise under 5 mVpp, which suits digital boards with sensitive clocks. So, set the current limit before you power a new board. That way, a short circuit cannot do much damage.
A quick check before you request
First, write down the highest current your device draws at start-up. However, motors and capacitors often pull more at power-on than at idle. Then compare that peak with the 8 A limit on the low range. If it fits, this unit works. Otherwise, ask Lost in HCM about a larger supply.
How to order the E3644A
Rent the Keysight E3644A power supply for a line bring-up or a test campaign, and buy it when one bench uses it every day. Either way, request a quote from Lost in HCM with your range, interface and delivery details. You can also see more power supply listings, visit the Keysight E3644A page or contact SMK Vietnam.
Common E3644A questions
How much current does the E3644A give at 8 V?
Keysight lists up to 8 A on the 0 to 8 V range. Once you move to the 0 to 20 V range, the ceiling falls to 4 A.
Does it have a second output?
No. Keysight lists one output with two ranges, not two separate outputs.
Can I drive it from a test script?
Yes, through GPIB or RS-232. Confirm the driver and cable with Lost in HCM before you order.
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