It depends on the current requirement. Specify an application or describe what is being powered by the 12 V to get an answer.
To drop 12V DC to 10.5V DC with a 70A load, you need to calculate the resistor value using Ohm's Law (V = I × R). The voltage drop required is 1.5V (12V - 10.5V). Using the formula R = V/I, the resistance needed is R = 1.5V / 70A = 0.0214 ohms. However, resistors are not ideal for high current applications due to heat generation and power loss, so consider using a suitable DC-DC converter instead.
Not without a lot of very expensive equipment
Running 12V DC LED lights with 15V DC is generally not recommended, as the higher voltage can lead to overheating, reduced lifespan, or even damage to the LEDs. Most 12V LED lights are designed to operate within a specific voltage range, and exceeding that can cause them to draw more current than they are rated for. If you must use a 15V supply, consider using a voltage regulator or a buck converter to step down the voltage to a safe level for the LEDs.
How much current? Volts/Amps = Ohms. In your case Volts = 1.5
Input: AC 100-127 Output: DC 12V
how to know dc cable sizes
DC 12V power supply can convert 110/220V AC power source to 12V DC.
if you have 12v dc then you can use a 4 ohm resistor
Battery chargers have a 12v DC output.
12v dc to 3v dc
The correct size of cable depends on the length of the cable run, as well as the voltage and current. Another consideration is what voltage loss is acceptable ? Safest answer would be to use a cable sizing table or online tool: http://www.solar-wind.co.uk/cable-sizing-DC-cables.html Hope that helps. G.
what is the diference between 12V 15A DC coil & 12V 10 amps DC coil
7K ohm
To drop 12V DC to 10.5V DC with a 70A load, you need to calculate the resistor value using Ohm's Law (V = I × R). The voltage drop required is 1.5V (12V - 10.5V). Using the formula R = V/I, the resistance needed is R = 1.5V / 70A = 0.0214 ohms. However, resistors are not ideal for high current applications due to heat generation and power loss, so consider using a suitable DC-DC converter instead.
using dc-dc converter
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.
No, you cannot.