More about battery (491)

1-07-1995 | Batteries often go flat at the most inopportune moments. What's more, frequently, this is not detected until it is too Iate, but this ca...

1-06-1995 | There are often occasions when a higher direct voltage is required than an available battery can provide. In many such cases, the circuit...

1-05-1995 | The capacity of a fully charged NiCd (nickel-cadmium) battery can be measured fairly accurately by draining the battery with a fixed curre...

1-05-1995 | The alkaline-mangane se battery is an example of the type of battery that until so me years ago was available only in non-rechargeable (p...

1-03-1995 | The power that can be obtained from a standard car radio amplifier operating from a 12 V car battery is 5-6 W, which (for many listeners)...

1-03-1995 | Although it has no detector or alarm actuation device of any kind, the present circuit may still function as a deterrent against car thi...

1-02-1995 | Many car battery chargers costing not more than £12- £15 are pretty spartan devices. Car owners should beware of using such chargers whi...

1-12-1994 | A solar panel rated at 6 V, 50 mA, provides enough energy to charge faur small NiCd batteries. The problem is, however, that the voltage...

1-12-1994 | Portable CD players have anannoying drawback: their current drain is so high that even rechargeable NiCd batteries. let alone dry types,...

1-12-1994 | The circuit shown in here has been designed to protect (expensive) high-power resistors against overheating. Very high power resistors (...