Superpower compared to a Dry Cell Battery
How does Superpower compare to a supply that some consider the best DC source?
Dynamic performance of a 1.8A current step was compared between a Superpower and a 6V battery. The battery is a new carbon zinc dry cell type, one of those big ones that looks like a square brick with 2 springs on top and goes in a flashlight. We also tried four new AA size alkaline batteries in series with virtually the same result.
The measurement was made by supplying Vin to a Superpower device under test (DUT) from a power supply using a Superpower and from a battery. Vin from the power supply was 6.25V and from the battery was 6.5V (it was previously unused). The DUT was a SPJ78 at 5V out. If you didn't peek ahead, take a guess as to which has better current delivery.
Superpower, 1.8A pulse
Superpower delivering 1.8A. The bottom trace shows Vout measured across a ½Ω load resistor. Top trace shows Vout to ground. The almost invisible shift at this scale is almost entirely due to contact resistance in the test socket.