bike_light_project
New Member
Hi boys and girls,
Need some help here! I have very little knowledge about electronics. I'm making a pair for head lights for my bike. Powered with a 10 x 1.25V 2500mAh rechargeable batteries placed in series (10 AA battery box). I guess i can get 12.5V out of it. Correct me if i'm wrong. I've got 2-off these battery box and i'm planning to put them together in parallel which i believe i can get 12.5V but 5000mAh. Rite?
2nd road block is, I'm planning to use a MR16 12V 20W Halogen bulb (flood light) on the left, and a 12V 4W LED bulb (spot light) on the right. I've wired them in parallel. My road block is, when I turn on just the LED on only, it works. When I turn on the Halogen bulb on together with the LED, the LED switches off automatically. I'm guessing LED only allow current to flow in one direction and Halogen light will change the current flow??? or since halogen bulb has no +/- poles, when they were switched on, it kinda created a short circuit and the LED turns off automatically??? In my mind, I was thinking of adding a Diod just before the Halogen to make sure the current only flow in one direction?? If so, which diod should I use? is there going to be V drop across the diod which will make my light less bright?? The circuit works fine with two LED on, so I'm guessing the Halogen is causing the problem in this circuit??![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Many thanks,
BLP
Need some help here! I have very little knowledge about electronics. I'm making a pair for head lights for my bike. Powered with a 10 x 1.25V 2500mAh rechargeable batteries placed in series (10 AA battery box). I guess i can get 12.5V out of it. Correct me if i'm wrong. I've got 2-off these battery box and i'm planning to put them together in parallel which i believe i can get 12.5V but 5000mAh. Rite?
2nd road block is, I'm planning to use a MR16 12V 20W Halogen bulb (flood light) on the left, and a 12V 4W LED bulb (spot light) on the right. I've wired them in parallel. My road block is, when I turn on just the LED on only, it works. When I turn on the Halogen bulb on together with the LED, the LED switches off automatically. I'm guessing LED only allow current to flow in one direction and Halogen light will change the current flow??? or since halogen bulb has no +/- poles, when they were switched on, it kinda created a short circuit and the LED turns off automatically??? In my mind, I was thinking of adding a Diod just before the Halogen to make sure the current only flow in one direction?? If so, which diod should I use? is there going to be V drop across the diod which will make my light less bright?? The circuit works fine with two LED on, so I'm guessing the Halogen is causing the problem in this circuit??
Many thanks,
BLP