More about battery (489)

1-04-2007 | Originally developed for receiver batteries in radio-controlled (RC) models, the circuit discussed in this article is used to charge, discha...

1-04-2007 | In theory you could just connect a solar panel via a Schottky diode to several batteries connected in series. The internal resistance of a s...

1-04-2007 | Lithium-based chemistries have for some time been showing the most promise of all battery technologies. Although they offer an unsurpassed e...

1-09-2006 | The circuit allows NiCd type LR03 (AAA) and LR6 (AA) rechargeable cells to be discharged in a controlled manner. The discharging (load) curr...

1-07-2006 | It is not generally known that it is possible to ascertain the extent of charge of a battery with a standard digital voltmeter. It does not...

1-07-2006 | The circuit described here is eminently suitable to indicate the capacity of a battery. We use a cheap electric clock for this. By connectin...

1-04-2006 | Occasionally there is the need to charge a battery from a laptop, mobile phone or PMR handheld using an ordinary laboratory power supply. It...

1-12-2005 | This article shows a simple circuit for slow charging while preventing any risk of overloading the battery. The circuit consists of just fou...

1-10-2005 | The TIRIS family of RFIDs from Texas Instruments can be found in many consumer applications ranging from vehicle security to logging maratho...

1-07-2005 | After buying a number of DECT telephones, we noticed that these became quite warm while charging. That surprised us, because the manufacture...