Comparison · Converters

Quick Charge voltage converter 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: Quick Charge voltage converter (3.4 A vs. 3.35); Ripple: Adjustable power supply kit board (15 mV vs. 300).

Model	Quick Charge voltage converter2019Read review →	Adjustable power supply kit board2015Read review →
Voltage, V	5	30
Current, A	3.4	3
Test current, A	3.4	3.35
Under load, V	5.16	9.98
Ripple, mV	300	15
Review conclusion	With reservations	Recommended

Only in one review: Temperature rise 60 °C (Quick Charge voltage converter); Price 1.34 $ (Quick Charge voltage converter).

Quick Charge voltage converter: A compact, inexpensive QC converter, but ripple is high and it cannot sustain maximum 5 V load for long.

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.