Innovative CircuitsSuperpower compared to an Optima Red Top Battery
We finally found something as good as Superpower!
The Optima Red battery is as good as (ok, ok, we admit it, better than) the Belleson Superpower. Unloaded noise is lower and dynamic performance is just as good.
Dynamic performance of a 2A current step was compared between a Superpower and an Optima Red Top 34 battery. You can see the specifications for this 38 pound (17.3 kg) behemoth here.The measurement was made by using a power transistor to sink 2A from the Optima and from a SPJ78 12Vout Superpower in a similar manner to all the dynamic tests seen here on our site.
In the ring shaking hands are the Flyweight Superpower SPJ78 at 2oz (56gm)
vs. Super Heavyweight Optima Red Top 34 at 38lb (17kg).
Dynamic performance
Superpower, 2A pulse
Superpower delivering 2A. The bottom trace shows Vout
measured across a ½Ω load resistor.
Top trace shows Vout to ground. Notice
no-load noise on the right side of the top trace vs. Optima.
Superpower, 2A pulse magnified
A view of the SPJ78 loaded to unloaded transient with horizontal scale magnified to 5µsec/div.
Rise time is about 2.5µsec with an overshoot that settles in another 2µsec.
Optima Red Top Battery, 2A pulse
Optima delivering 2A. Bottom trace shows Vout
across a ½Ω resistor (2A/div). Top trace shows Vout to ground.
The response is very fast and clean and the no-load noise is very low.
An equivalently expanded view of the Optima transient. Rise time is almost instant, less than 1µsec,
so fast that it overshoots with ringing. Ultimately the settling time is about the same as Superpower.