Basically, if you have two resistors in series, then the total resistance is Rt = R1+R2. According to Kirchhoff's law, the total current entering a junction must be equal to the total current leaving it, so for a series circuit the current is the same in both resistors. From Ohm's law V=IRt and so from above V = I(R1+R2). This means that that total voltage in the circuit, V, is equal to the sum of the voltages across each resistor V1=IR1 and V2=IR2. This "divides" the voltage, so that for a 30V supply with two resistors of 10 ohms and 20 ohms respectively, the voltage across the first resistor will be 10V and the voltage across the second will be 20V. In this way a component requiring a lower voltage than the supply voltage can tap off from one of the resistors.
Boss its a circuit not a device, you can also create one of yours..... just use simple logic of voltage divider and current divider rules...-satendra.svnit@gmail.com
only one dc supply is necessary.Operating point is almost independent of β variation.Operating point stabilized against shift in temperature.
The LM7805 is a linear voltage regulator that produces a relatively constant output voltage of +5VDC. There is an input pin, which must generally be greater than +7VDC, a ground pin, and an output pin. If the ground pin is connected to a resistor divider network between output and ground, it can be made adjustable for an output voltage greater the +5VDC. Its rating is 1A, but boost circuits can be built to give it more capacity.
Ohm is the unit for electrical resistance. The definition is given by Ohm's Law: resistance = voltage / current; in SI units: ohms = volts / amperes. For example, a resistance of 1 ohm would result in 1 ampere of current for every volt applied.
V = I * RThe equation you are looking for is R = V/I, although this is derived from the definition of the ohm, not Ohm's Law!Ohm's Law is merely a statement which, in effect, says that for a limited range of conductors, the ratio of voltage to current is constant for variations in voltage.If the ratio of voltage to current changes for variations in voltage, then Ohm's Law does not apply.However, the ratio of voltage to current will always tell you what the resistance of a load or device happens to be for that particular ratio.
A voltage divider in which the base current is small compared to the current in R2 (resistor in other path to ground) is said to be a stiff voltage divider because the voltage is relatively independent of different transistors and temperature effects.
The essential circuit of a voltage divider, also called a potential divider, is:
voltage divider
The voltage divider circuit is a network of two or more components in series, often resistors, between a potential difference. The voltage between the components will be somewhere between the potential difference across the whole network and so divides the total voltage into one or more intermediate voltages.
its the same
Use a voltage divider and an standard high input impedance voltmeter connected to the low voltage output tap of the divider. Just check that: a) the voltage divider has enough resistance to minimize loading of the voltage source (The voltage divider resistance should be as high as possible). b) the voltmeter's input impedance is at least 10-20 times larger than the output resistance (impedance) of the divider. If necessary add a high-input impedance amplifier or a transducer between the divider output and the voltmeter. What is high voltage for you?
what is function of a voltage divider in electrical system
it is aa linear circuit that produces the output voltage from the fraction of its input. It is also known as potential divider.
A: that is true for less current a divider is OK it has to do with the series resistance and loading if the loading is forever fixed and the source is also fixed at a value then a divider can be used no matter what the current is.
The two resistor voltage divider is used often to supply a voltage different from that of an available battery or power supply. In application the output voltage depends upon the resistance of the load it drives.
you can use a voltage divider or a step-down transformer to lower voltage.
You can use more than one type of voltage divider in it. It can sometimes get mixed signals with all the things going on.