Avery 15 tab dividers template definition
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If we replace resistor R 2 with a variable resistor (potentiometer), then the voltage dropped across R 2 and therefore V OUT can be controlled by an amount dependant on the postion of the potentiometers wiper and therefore the ratio of the two resistive values as we have one fixed and one variable resistor.
#Avery 15 tab dividers template definition series
Note that if we use two resistors of equal value, that is R 1 = R 2, then the voltage dropped across each resistor would be exactly half the supply voltage for two resistances in series as the voltage divider ratio would equal 50%.Īnother use of a voltage divider network is that to produce a variable voltage output. Applying Kirchhoff’s Voltage Law shows that the sum of the voltage drops around the resistive circuit is exactly equal to the supply voltage, as 4V + 8V = 12V. Using the voltage divider ratio rule, we can see that the largest resistor produces the largest I*R voltage drop. Resistive Voltage Divider CircuitĮach resistance provides an I*R voltage drop which is proportionaly equal to its resistive value across the supply voltage. This basic combination allows us to use the Voltage Divider Rule to calculate the voltage drops across each series resistor. The simplest, easiest to understand, and most basic form of a passive voltage divider network is that of two resistors connected together in series. But we can also make voltage dividers using individual resistors, capacitors and inductors as they are two-terminal components which can be connected together in series. The potentiometer, which is a variable resistor with a sliding contact, is the most basic example of a voltage divider as we can apply a voltage across its terminals and produce an output voltage in proportion to the mechanical position of its sliding contact. A voltage or potential divider is a simple passive circuit that takes advantage of the effect of voltages being dropped across components which are connected in series. Voltage dividers are also known as potential dividers, because the unit of voltage, the “Volt” represents the amount of potential difference between two points. with respect to a common point or ground, usually 0V, or it could be across a dual supply, for example ±5V, or ☑2V, etc. This common supply can be a single supply either positive or negative, for example, +5V, +12V, -5V or -12V, etc. Voltage Divider Circuits are useful in providing different voltage levels from a common supply voltage.