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With some difficulty. You can use a resistor in series to drop the voltage, or you can use a zener diode. If you want to be elegant you get a DC-to-DC converter and set it up to do the job for you.
A series resistor will work only if the load current doesn't vary.
Wiki User
∙ 12y ago
Wiki User
∙ 13y agoA: At that low voltage a supposed to be zener could be a series of diodes. Anyhow you must first determine the load at 3.5 volts then add 5 to 10 ma for the zener for total current. a resistor must be placed in series with the zener and its value would be 12v -3.5v divided by total current.
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The output voltage from a PC power supply are?
Generally, there will be a 12+ volt rail, a 5+ volt rail and often a 3+ volt rail.
What is the ac equivalent of 98v DC?
120 volt single phase rectifies to about 96 volt DC
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 a 7.5 volt dc adapter be used for 9 volt dc speakers?
You may get some sound out of the unit but not at the fidelity that the manufacturer designed the speaker to produce.
What is a Variable 0 - 12V dc power supply?
A variable power supply has a control to adjust the DC output voltage from 0 to 12 volts. It is used for testing electric project's such as amplifiers and other electric devices. It can be used to replace other fixed voltages power supplies such as the srandard 3 volt, 5 volt, 9 volt and 12 volt units.
How do you change 3 volt dc into 4.5 volt dc?
With an invertor/rectifier or voltage multiplier.
How do you convert 12 volt DC to 100 volt DC?
With an appropriately rated DC to DC converter.
How you convert 60 volt dc to 3.5 volt dc?
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CAN YOU STEP DOWN 36 volt dc to 12 volt dc using batteries?
can ou step down 36 volts dc to 12 volt dc using batteries
Is 24 volt DC is equal to -48 Volt DC?
No. The value and polarity are different.
The output voltage from a PC power supply are?
Generally, there will be a 12+ volt rail, a 5+ volt rail and often a 3+ volt rail.
How do you reduce 14 volt DC to 10 volt DC?
Use a properly rated potentiometer.
What is the ac equivalent of 98v DC?
120 volt single phase rectifies to about 96 volt DC
Is a 9 volt battery ac or DC?
All Batteries are DC or Direct Current.
Is 1 volt more then 1 DC volt?
No, it is the same. DC stands for direct current rather than AC, which is alternating current.
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.
Are auto electric systems 12 volt or 120 volt?
12 Volts DC
