For finding the medium value of the resistance different methods are used, but mostly Wheatstone bridge is used. comes under this category.Īnd very high resistance measurement is considered from few Mega Ohms to greater than 100 Mega Ohms. Measurement of normal resistors, potentiometers, thermistors, etc. If the measurement is from 1 ohm to few hundreds of KΩ is generally referred as a medium resistance measurement. This measurement is actually used for research purpose. If the resistance measurement is possibly from a few micro ohms to milli ohms, then it is considered as a low resistance measurement. Generally, the resistance measurement is divided into three types: As the name suggests, an LDR is a device, whose resistance changes according to the amount of light falling on it. Therefore, there is a need for a signal conditioning for every resistance based sensor.įor example, the simplest device we can think of is the Light Dependent Resistor or LDR. produces the change in value of the resistance for an equivalent change in the respective quantity. If we consider the resistance, most of the industrial sensors like temperature, strain, humidity, displacement, liquid level, etc. In the World of analog electronics, we come across various signals, some of them are measured by changes in resistance and some of them are with changes in inductance and capacitance. Wheatstone Bridge for Strain Measurement.Wheatstone Bridge for Temperature Measurement.Find Unknown Resistance using Balanced Wheatstone Bridge.
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