Hi, I am new to this forum and I am new to electronics as well, but i have a project to do for a club that i'm in. So I have to make a simple 12V 10Ah battery tester that when the battery reaches less than 10.5V it turns off a simple 1.5V battery powered Clock, also this circuit has to be able to drain the battery in a relatively short time.
So as far as my almost non-existent knowledge takes me is that i have to use a 150W light bulb to drain the battery quickly, a diode to cut the voltage when its below 10.5V and some sort of transistor to be used as a switch to turn off the (1.5V battery powered) clock. That's it however i don't know how to pick the right resistors, diodes or transistors, so please help me, I would be really grateful. Thanks in advance.
So as far as my almost non-existent knowledge takes me is that i have to use a 150W light bulb to drain the battery quickly, a diode to cut the voltage when its below 10.5V and some sort of transistor to be used as a switch to turn off the (1.5V battery powered) clock. That's it however i don't know how to pick the right resistors, diodes or transistors, so please help me, I would be really grateful. Thanks in advance.