Comparison · Converters

USB DC-DC board, type two or Adjustable power supply kit board

Two models side by side: measurements taken by the author in their reviews, and their conclusions. The better value in each row is highlighted.

In brief: Based on review measurements: Test current: Adjustable power supply kit board (3.35 A vs. 2.8); Ripple: Adjustable power supply kit board (15 mV vs. 110).

Model	USB DC-DC board, type two2019Read review →	Adjustable power supply kit board2015Read review →
Voltage, V	5	30
Current, A	3	3
Test current, A	2.8	3.35
Ripple, mV	110	15
Review conclusion	With reservations	Recommended

Only in one review: Under load 9.98 V (Adjustable power supply kit board).

USB DC-DC board, type two: Type two works but overheats, is limited to about 2.8 A, and has worse efficiency and ripple than type one.

Adjustable power supply kit board: A good beginner's kit that works after assembly, though the shunt, op-amps and bridge rectifier have shortcomings.

Figures were taken from the review text and checked against the quoted passages. Measurement conditions differ between reviews, so read the reviews yourself before buying. Prices at the time of review.