NiCd Charger with Current and Voltage Limiting

NiCd charger with current and votage limiting

This NiCd battery charger circuit is very simple but it has a current and voltage limiting.

Lamp L1 will light brightly and the LED will be out when the nicd battery is low and being charged, but the LED will be bright and the light dim whenever the nicad battery is nearly ready. Li should be a bulb that is rated for the current you want (usually the battery capacity divided by 10). Diode D1 must be no less than 1 A, and Zl is a 1-W zener diode with a voltage in accordance with the full-charge battery voltage minus 1.5 V. Right after the nicad battery has been fully charged, the NiCd charger circuit will float it at around battery capacity divided by 100 mA.

Power supply is an electronic device that supplies electric energy to an electrical load. The primary function of a power supply is to convert one form of electrical energy to another and, as a result, power supplies are sometimes referred to as electric power converters. Some power supplies are discrete, stand-alone devices, whereas others are built into larger devices along with their loads. Examples of the latter include power supplies found in desktop computers and consumer electronics devices.


Tags: NiCd battery charger NiCd charger circuit NiCd charger with current limit NiCd charger with voltage limiting

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