More about Battery (482)

1-07-1998 | How many different conditions do you reckon may be signalled with just one LED? Two, maybe three? Using this simple circuit, a lot more!

1-07-1998 | The design of the charger is similar to that of many commercially available chargers. The charger consists of a mains adaptor, two resis...

1-07-1998 | The circuit of the running light comprises two integrated circuits (ICs), a resistor, a capacitor and seven light-emitting diodes (LEDs)...

1-07-1998 | Electronic equipment is increasingly becoming smaller, lighter, and more functional, thanks to the push of technological advancements a...

1-07-1998 | If there is one thing that a lead-acid battery does not like it is persistent neglect. When such a battery is being discharged, its en...

1-07-1998 | This battery tester does the job properly by evaluating the battery state under loaded conditions. The project is easy to build and co...

1-07-1998 | Lead-acid batteries must not be discharged deeply. In the best case, this leads to an irreversible loss of capacity; in the worst case,...

1-07-1998 | This design is based on the celebrated 555 timer IC, and changes a positive voltage of 9 V into a negative one. A low-power dc-dc conver...

1-05-1998 | A measurement of the e.m.f. of a battery (dry or rechargeable) does not say anything about the condition of the battery or its constituen...

1-03-1998 | This is the third and last in a series of three miniature designs for beginners in electronics. Each of the designs is powered by a 3...