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A.C. values are always expressed in root-mean-square (r.m.s.) values, which correspond to d.c. values. So 12 V (d.c.) is exactly equivalent to 12 V (a.c.). So, for example, a lamp rated at 12 V would be equally bright whether supplied with 12 V (d.c.) or 12 V (a.c.).
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoYou need a rectifier diode to make the current flow in one direction only, and a resistor to limit the current if you are charging something like a car battery.
The diode needs to carry the charging current in amps, might be up to 10-15 amps.
A bridge rectifier is better than a simple diode.
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What is the ac voltage reading between the bare copper wire and the hot black wire 120 vac or zero volt?
Should be about 120 VAC.
What size of wire is needed to run a 20 amp 2 pole breaker for a 220 volt window AC unit?
12 guage. The most current that can be sustained in 12 Ga wire is 20 Amps. Almost all 12 Ga wire sold for home use can handle 600 volts, so your 220 v A/C is covered. The voltage rating should appear on the jacket of the wire sheath.
Can you power a 12 volt dc indicator light from a 16 volt ac door bell transformer?
No, the 12 VDC light must have a DC supply and the transformer voltage as well as being 16 volts which is too high, the output is AC.
What is Formula for finding color of wiring?
You do not say if you are wiring AC or working with Dc 12 volt wiring.
Can you use a 16 volt charger for 18.5 volt laptop to be more specific a 16V 4.5A AC adapter for a laptop requiring 18.5V 3.5A?
No, the charger will never get the battery up to a full charge. Usually chargers for equipment are about 1.5 volts higher that the device it is to charge.
Will a 120 volt AC to 12 volt AC adapter charge a 12 volt car battery?
No, the battery is DC not AC.
Will a 120 volt AC to 12 volt AC adapter charge a car battery?
No, auto batteries are DC not AC.
Can you run a 12 volt ac water pump with a 12 volt dc adapter?
No. You need 12 volt AC to run a 12 volt AC motor, not 12 volt DC.
Can you wire a 240 volt window ac from a 277 volt feed?
no
Is the black wire the hot wire in PCs just like in home wiring and AC circuits?
No, internal PC wiring colors do not correspond to the standard AC wiring colors. Computer power supplies provide direct current to the computer and peripherals. When using direct current, the black wire is the ground wire. The red wire to the peripheral supply cables are 5 volt, and the yellow wire is 12 volt. Some SATA power connectors have an orange wire that is 3.3 volt.
Can you charge a 12 volt battery with a 14 volt alternator?
Yes. It is done all the time in automotive electrical systems. The alternator, which creates AC, has its current rectified using diodes.
How do you get a 12 volt pm alternator to give you 110 volt ac?
Purchase a power inverter.
Can you replace 12v vdc adapter by 12v vac adapter?
No, 12 volt AC is a different from 12 volt DC. Have a second look at the 12 AC volt adapter's output label. Most adapters contain a bridge rectifier in them that makes a conversion within the adapter. An example of this is in phone chargers.
110 volt ac car alternator?
I hope not, it'll cook the 12 volt DC system.
How can you test an AC Blower motor on a '97 Cadillac DeVille with the automatic air control system?
Red and black wires are +12- volt, jumper the gray wire to ground to test.
Why do i still have 12 volt when i use disconnect switch in my RV?
The RV has a 12 Volt DC power supply that operates all the 12 Volt DC items in your RV when your plugged in to 110 V AC.
What is the ac voltage reading between the bare copper wire and the hot black wire 120 vac or zero volt?
Should be about 120 VAC.
