12v dc to 3v dc
7K ohm
DC 12V power supply can convert 110/220V AC power source to 12V DC.
Unfortunately, no. You'll need a 12v battery for the drill or a 14 v drill for the battery.
if you have 12v dc then you can use a 4 ohm resistor
Battery chargers have a 12v DC output.
No, 3200 ma = 3.2 amps
what is the diference between 12V 15A DC coil & 12V 10 amps DC coil
using dc-dc converter
No, you cannot.
If you want to convert 24v AC into 12v Ac, it's simple. Just get a transformer to convert 24 volts into 12 volts. This is called a stepdown transformer. If you want to convert 24v DC into 12v DC, it's more complicated. First you have to change the 24v DC into 24v AC by a switching converter that changes DC into AC. Then you would use a stepdown transformer as in the former example. Once the 24v AC is converted to 12v AC, then you use a rectifier bridge to change the 12v AC into 12v DC.
12v DC