Comparison · Converters

Large Step-Up board modified into a SEPIC 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).

Model	Large Step-Up board modified into a SEPIC2015Read review →	Adjustable power supply kit board2015Read review →
Voltage, V	28	30
Current, A	2	3
Test current, A	2	3.35
Under load, V	3	9.98
Review conclusion	Recommended	Recommended

Only in one review: In test 3.3 W (Large Step-Up board modified into a SEPIC); Ripple 15 mV (Adjustable power supply kit board); Temperature rise 70 °C (Large Step-Up board modified into a SEPIC); Price 0.6 $ (Large Step-Up board modified into a SEPIC).

Large Step-Up board modified into a SEPIC: After modification, the board works stably and delivers up to 700 mA at 3.3 V from a lithium cell.

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.