12v dc to 3v dc
7K ohm
12V, 5V
DC 12V power supply can convert 110/220V AC power source to 12V DC.
AC or DC? AC - use a transformer, DC - forget it - not simple or cheap.
AC or DC? AC - use a transformer, DC - forget it - not simple or cheap.
input voltage is strictly according to applications. If use 12V dc adapter power 5V dc device, the 5v dc device would be damaged.
if you have 12v dc then you can use a 4 ohm resistor
+12V, -12V, +5V, -5V, +3.3V +12V, -12V, +5V, -5V, +3.3V
One invert the function or a signal. the other is a pulse width modulator controller which are usually used to convert one source of power to another. As in 12v dc in 5v dc out or vice versa
+12V, -12V, +5V, -5V, +3.3V
12v, 3.3v 5v