LONG-LASTING BATTERIES DESIGNED FOR DEPENDABILITY – Duracell Coppertop alkaline batteries deliver the lasting power and performance you can count on for electronic devices throughout the home or ...

Pedal Juice, Sanyo's latest Eneloop rechargeable battery solution, offers musicians some relief from a gig bag full of 9V batteries. It could also help cut down annoying AC hum that some wall outlet ...

A previously published Design Idea describes a practical gadget that has the potential to save a lot with little investment (Reference 1). However, the circuit uses 120V line voltage and, as such, it ...

After several requests by correspondents, the decision of designing a 9V powered Headphone Amplifier was finally taken. The main requirement was to power the circuit by means of a common, PP3 ...