Traditional Chinese Nickel cadmium battery charging circuit: Circuit Design, Parts List & Workshop Prototype Guide
In short: Traditional Chinese Nickel cadmium battery charging circuit: Circuit Design, Parts List & Workshop Prototype Guide (Circuit). This entry documents a circuit & prototype taken from Chinese practical-technology literature, written for small-scale makers and home producers. The text below is the full English translation of the original Chinese workshop notes, covering materials and quantities, the step-by-step sequence, and the practical cautions recorded in the source. Roughly 8569 words of English technical text, translated and preserved without editing. It is intended for experimental and reference use, not for regulated or commercial certification.
Nickel cadmium battery charging circuitDue to the rapid development of semiconductor integrated circuits, the continuous improvement of people's consumption levels, the inherent shortcomings of dry batteries themselves and the rise in prices, cadmium-nickel batteries (mainly sealed structure types) are increasingly widely used in portable radio recorders, electric shavers, flashlights, watches, electronic calculators, radio walkie-talkies, hearing aids, flashlights, signal alarm devices, lighting and many other aspects.Nickel-cadmium batteries are characterized by stable discharge voltage, long charging life, can be charged repeatedly, and require almost no maintenance. Although the one-time investment is relatively large, compared with zinc-manganese dry batteries, the economic benefits are high, because nickel-isolated batteries can be charged more than a thousand times, and charging can restore nickel-cadmium batteries to their working capabilities. For this reason, it is very necessary to master the charging method of nickel-cadmium batteries.For nickel-cadmium batteries used in portable electrical appliances for medium-cycle use, standard charging and fast charging should be carried out; for AC power supply and nickel-cadmium batteries used as backup power sources, continuous supplementary charging should be used, that is, the battery is isolated from the load during charging; or float charging is used, that is, the battery and the load are connected during charging. …
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Lei Cheng
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