Mastech HY3005F-3Triple Linear DC Power Supply, 30V, 5A

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Price: $209.99 $195.99   

Product Feature

• Dual adjustable outputs: 0-30V and 0-5A
• Fixed output: 5V and 3A
• Line regulation: CV <= 0.01% + 2 mV, CC <= 0.2% + 2 mA>
• Load Regulation: CV <= 0.01% + 3mV, CC <= 0.2% + 3 mA
• Display reading accuracy: +/-1% for voltage and +/-2% for current

Product Description

Mastech Power Supply HY3005F-3 is a =regulated power supply with triple outputs. This high quality linear power supply has three outputs: two outputs are continuously adjustable at 0-30V DC and 0-5A, and the third output is fixed at 5V DC and 3A. What's more, the two outputs can be used either in independent, series or parallel mode, providing either two independent outputs, or one output with twice the voltage or twice the current output, up to 60V or 10A. The unit comes with 4 color LED displays, providing accurate and clearly visible readout for the voltage and current value. LED displays are new trend in instrumentation, because they are more durable and easily visible even in dark environment. This unit has toggle switch at the back that allows you to operate it in 110V AC AC. retails well over $400. Please email us with any questions, our hard-working staff will answer every email in no time!

Features & Specifications:

Easy control for both current and voltage outputs

Dual adjustable outputs: 0-30V and 0-5A

Fixed output: 5V and 3A

Input voltage: 110V AC switchable

Line regulation: CV <= 0.01% + 2 mV, CC <= 0.2% + 2 mA>

Load Regulation: CV <= 0.01% + 3mV, CC <= 0.2% + 3 mA

Ripple noise: CV <= 0.5 mV RMS, CC <= 3 mA RMS

Protection: constant current and short-circuit protection

Display reading accuracy: +/-1% for voltage and +/-2% for current

Environment: 0-40C, relative humidity < 90%

Size: 14" x 10" x 8"

Weight: 25 lbs

Warranty: 1 year

Mastech HY3005F-3Triple Linear DC Power Supply, 30V, 5A Review

Seller was great, the supply arrived quickly and in perfect working condition (2nd day Amazon Prime).

Not obvious (to me) was that the two adjustable outputs can be connected in series, in parallel, or independently via front panel switches. In series or parallel connection the combined output is controlled by the master output's controls. In parallel mode the load current is the sum of the values indicated by the two output's ammeters - requires some quick addition, and is quite manageable.

This supply would have achieved a 5-star rating if it made full rated current in parallel mode and had fine adjust knobs for voltage and current conrols. However, the supply did make 9.5 amps in parallel mode, and the voltage and current control pots are very smooth and with a little practice can be set to the 0.1 amp or volt resolution of the front panel meters.

I have been using this supply to validate some prototype remote ammeters. To do that, I first had to characterize the supply against a 3.5 digit DMM and a set of precision load resistors. Load regulation and ripple were well within spec. Voltage was stable over time, as was current in constant current operation. The LED front panel meters agreed exactly with the DMM and were bright and easy to read at all angles. The fixed 5V output remained within a few millivolts of 5.00 volts over the 1A load current range I used. The binding posts were properly dimensioned and fit the bannana plugs well. (You might think you could take all these things for granted, but that has not been my experience with these foreign-made instruments.)

Overall, a pleasure to use and worth the price.

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