| Systems with RAM must always be connected to a power supply otherwise the data in the memory get lost. Any break in the supply can, ther...
| Systems with RAM must always be connected to a power supply otherwise the data in the memory get lost. Any break in the supply can, ther...
| The charger is designed to charge NiCd batteries with capacities of 150-4000 mAh. A potential 5 V higher than the nominal voltage of the...
| This unit is intended as an add-on for the many lead acid battery chargers that have no charge indicator. A green LED shows that the bat...
| A part from use as a standard charger, the present unit may also be used for continuous trickle charging to keep a 12 V lead-acid battery...
| Nickel-metal-hybride (NiMH) batteries have now become widely available. A typical one is the 120AAH, which has a capacity of 1.2 Ah in si...
| Many battery-operated appliances have an LED indicator that shows the state of the battery. If the battery is almost flat, the LED flickers....
| The charger makes cunning use of the properties of a Type 555 timer. The tnternal window comparator of the lC is set to 4.7 V by zener dio...
| A frequent annoyance with battery-operated equipment is that just after you switch it on you notice that the battery is fIat. Quite proba...
| The charger deseribed switches off the charging voltage when the battery reaches its full nominal voltage and switches it on again when...
| Keeping your car battery constantly charged when the car is not in use appreciably increases the life of the battery. Charging is, of co...