| This little circuit exploits the fact that the remaining capacity of a Lithium Ion (Li-Ion) rechargeable battery is virtually proportiona...
More about Battery (451)
| The saver is intended to prevent a battery-operated instrument such as a multimeter without an automatic off switch to be left on for day...
| Input selection in the battery operated preamplifier published in the January 1997 issue of this magazine is by rotary switch. This does...
| The ignition warning light in a car indicates whether the battery is being charged or not (and indeed whether it is connected properl...
| Testing and faultfinding of audio equipment and low-frequency test instruments is all but impossible without a good signal generator. T...
| To design a battery charger with switching regulators you need quite a few flat batteries and the patience of Job. When you come to c...
| Following the detailed description of the preamplifier in last month's installment, this second and final part of the article deals with t...
| This preamplifier is intended for those audio enthusiasts who are interested in only the best. Its discrete design produces distortion...
| There has always been doubt about the claims that dry alkaline manganese batteries could be revived by charging, especially since manu...
| The battery indicator lamp on the dashboard of cars lights when the car's battery is not being charged. The present circuit has a simila...