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ummmmm... put it in series.
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∙ 14y ago
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What working of resistor?
The main power producers in an electrical system are the battery and alternator. The alternator puts 14 volts of alternating current into the electrical system and resistors. The resistors only allow a fraction of the AC voltage produced to reach the systems' sensitive components
How a ballast resistor convert DC into ac?
A resistor, by itself, can not convert DC into AC.
Why you use ac for transmission?
AC is used for transmission because AC can be stepped up in voltage with a transformer, and then stepped back down at the destination. Since power is voltage times current, a higher voltage requires a smaller current to achieve the same power. Since the current carrying capacity of wires is based on wire size, a smaller wire size can be used to transmit the lower current.
How do I measure AC current using microcontroller.?
1. PIC16F877A 2. CT 3.difference amplifier DIFFERENCE AMPLIFIER: To measure this current with pic microcontroller,we have to use ADC module of PIC microcontroller.To use ADC module we will convert current into voltage form by using a .1 ohm shunt resistor across CT and we will measure this voltage drop across shunt resistor.Then this voltage drop can be easily converted into current again.For example voltage drop across .1 ohm shunt resistor =8v then current according to ohm law V=IR I=V/R I=8/.1=8A but the problem is ADC of pic microcontroller can never measure voltage greater than 5 volt. so to solve this problem we can use differenceamplifier. By adjusting gain of difference amplifier we can reduce voltage lower than 5 volts.
How can I step down 48 volt DC to 12 volt DC?
Used the transformer. SO will be change 40vdc. <<>> Humm (no pun intended) - a DC transformer, must be something new in the market. A variable potentiometer will allow you to reduce the voltage to the required voltage you need. It will have to be of a higher wattage variety to dissipate the heat that will be generated depending on the wattage of the load at 40 volts.
What is a LDR dependent AC dimmer?
The LDR dependent AC dimmer is a Light Dependent Resistor which works by chopping off the parts of the AC voltage.
Is tranformer used to increase or decrease AC voltage?
The function of any transformer is to change one AC voltage value to another AC voltage value. A step down transformer will transform a higher AC voltage to a lower AC voltage. A step up transformer will transform a lower AC voltage to a higher AC voltage. The transmission of electrical power uses both of these types of transformers. From the generation station the voltage is stepped up to a very high transmission voltage and at the end of the transmission line it is stepped down to a voltage that consumers can utilize.
What is the function of step-down transformers?
The function of any transformer is to change one AC voltage value to another AC voltage value. A step down transformer will transform a higher AC voltage to a lower AC voltage. A step up transformer will transform a lower AC voltage to a higher AC voltage. The transmission of electrical power uses both of these types of Transformers. From the generation station the voltage is stepped up to a very high transmission voltage and at the end of the transmission line it is stepped down to a voltage that consumers can utilize.
What is the circuit which converts high voltage to low voltage?
You can use a step-down transformer, you can use an inverter, you can use a switching regulator, you can use a simple series regulator, you can use a zener diode with a resistor, or you can use a simple series resistance. It all depends on your voltage, power, and regulation requirements, and on whether or not the input and/or output is AC or DC.
What value of resistor would take you from 18v ac to 3.3v ac?
sorry - no can do. The value of a resistor is dependent upon the amount of current flowing through it. To drop the a.c. voltage as you have stated would require a drop-down transformer.
Ac adapter is it ok to use lower voltage 19v 4.74a ac adapter has died. Can I use a spare I have in the mean time it's output is 12v and 5a?
not unless you want to fry your electronics
How a ballast resistor convert DC into ac?
A resistor, by itself, can not convert DC into AC.
What working of resistor?
The main power producers in an electrical system are the battery and alternator. The alternator puts 14 volts of alternating current into the electrical system and resistors. The resistors only allow a fraction of the AC voltage produced to reach the systems' sensitive components
Can we produce electricity from lightning?
No. Lightning is a DC discharge of short duration at a very high voltage. To be useful for commercial production it has to be a continuousness alternating current (AC) supply of voltage. Only AC supplies can be manipulated to be boosted to a higher voltage for transmission and then lowered for use by transformation to lower home voltages.
When an AC voltage is being measured across a 15 resistor which is carrying a current of 12 amps the selector switch should be set to the AC voltage position of 2 volts 200 volts 20 volts 1000 volts?
Two Hundred
Can ac pass through capacitor?
AC can pass through a capacitor. The higher the frequency of AC the lower the reactance (like resistance). The current and applied voltage are 90 degrees out of phase the current leading the voltage by this amount.
What is capacitive effect in antenna?
The capacitive effect is an element's opposition to a change in AC voltage. The resistor will develop a positively charged current at it flows through a capacitor. This will prevent a change in the initial voltage.
