I have a handheld drilling machine purchased in the UK, which operated on a re-chargable battery. After many years of usage, I find this battery cannot be charged any more, and these batteries are no longer available. However, the step down transformer that was used to charge the battery has an output of 14V DC. The driller needs a supply of 12V DC to operate. I intend utilizing the transformer's output to supply power to this gadget. Do you know any simple method to reduce the voltage from 14V to 12V. If I need to use resistors, please mention the color code. Much obliged for your attention.
sort by best latest
You can help the HubPages community highlight top quality content by ranking this answer up or down.
Thanks Wanderer, the output is DC as it has already been rectified by an inbuilt circuit. Otherwise it won't be able to charge the battery. I intend buying a Black & Decker to simplify things. Would be useful on the long run. Thanks anyway. :)
I wasn't talking about the internal bridge rectifier but external diodes that you can connect up to drop the dc. But since you intend to buy a Black & Decker to simplify things, problem solved. :)