To reduce 12VDC to 7VDC you need a voltage divider in the ratio of 7/12, such as two series resistors of values 5KOhms and 7KOhms.
Of course, this "trite" answer (the resistor divider) depends on how much power you need to supply, and how much source to load current regulation ratio you need.
You might need to follow this up with an class C amplifier, compensating for the 0.6 volt drop across the base-emitter junction.
You might need an OP-Amp controlled emitter follower, with a zener reference.
For high current applications, you might even need a switching regulator.
36 is to 12 as 18 is to 24.
12 volts
Yes. You can use a voltage divider. Say, for instance, one 1KOhm resistor in series with a 3KOhm resistor. Connect the 3k resistor to the 48 volts and connect the 1k resistor to ground. The 1k resistor will have 12 volts acress it. These resistors need to be at least 1 watt each as they are going to dissipate 0.576 watts and get warm. Now, if you attempt to pull power from the 1k resistor, note that regulation will be poor because the impedance of the load will go in parallel with the 1k resistor and change its value.
Since the equation for watts is: Volts * Amps = Watts that would mean 12 Volts * 1 Amp = 12 Watts
You are working with two different values. Watts is the product of amps times volts. W = A x V, as you can see if there is a value missing then there can be no answer given.
If the voltage is AC a transformer can be used.
You need a regulator.
Reduce the primary voltage and the secondary will also drop.
12 volts
You need an ac-dc converter to reduce your house voltage to 12 volts
The potential difference of 120 volts and 12 volts is 108 volts.
No. 12 volts peak to peak would be 6 in the positive polarity and 6 negative polarity. Simply saying 12 volts AC would be 12 volts in each polarity or 24 volts peak to peak
It is 12 volts.
Most commonly is a transformer used to reduce the voltage. You can get it in the shop with electronic eq.
12 volts!!! 12 volts!!! Real Answer 13.1 volts (Depending on Battery)
The YTX 14-BS battery typically has a voltage rating of 12 volts.
12 volts