All items tagged with Time and Battery (31)

1-12-1993 | The timer, based on EXAR'S Type XR2240, is intended for use in photographie and printed-circuit departments, as a standby switch for 1 V...

1-12-1993 | 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...

1-07-1993 | Many battery-operated appliances have an LED indicator that shows the state of the battery. If the battery is almost flat, the LED flickers....

1-12-1992 | 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...

1-07-1991 | A frequent annoyance with battery-operated equipment is that just after you switch it on you notice that the battery is fIat. Quite proba...

1-07-1991 | The charger deseribed switches off the charging voltage when the battery reaches its full nominal voltage and switches it on again when...

1-07-1991 | Everyone should clean his teeth a tleast a couple of times a day. Dental research shows that cleaning one's teeth for three minutes at a...

1-07-1991 | Keeping your car battery constantly charged when the car is not in use appreciably increases the life of the battery. Charging is, of co...

1-07-1991 | Siemens Type 5AB0529 IC may be programmed for periods from 1 second to 31 hours 30 minutes. lt may be used for switching staircase lights...

1-12-1990 | The portable carger is intended primarily to give model enthusiast the opportunity of charging their NiCd betterles from Cl car battery o...