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Liquid Flow transducer: Ultra sound type










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Concepts and types of Digital voltmeter

Digital Voltmeter (DVM) Definition : Digital Voltmeter is a  voltage-sensitive device . It  measures AC  or  DC voltage  and  displays  the value directly in  numeric form  instead of pointer deflection.  DVM  is an acronym for  Digital Voltmeter . DVM was first invented in  1954  by  Andrew Kay . There exist many factors that affect the measurement accuracy of a digital voltmeter(DVM). These are basically temperature, input impedance, variation in power supply voltage etc. As we know that an  analogue instrument  provides results by  pointer deflection  on a continuous scale. On contrary, a  digital instrument  provides results as  discrete numerals . Thus providing accuracy and versatility together. The input range of DVM may vary from  ±1 V  to  1000 V . Precision DVM offers  input resistance  of  1 GΩ  or high for a voltage range of less th...
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Analog to Digital Converters: Successive Approximation A/D Converter

  Analog to Digital Converter & Its Working Almost every environmental measurable parameter is in analog form like temperature, sound, pressure, light, etc. Consider a temperature  monitoring system  wherein acquiring, analyzing, and processing temperature data from sensors is not possible with digital computers and processors. Therefore, this system needs an intermediate device to convert the analog temperature data into digital data in order to communicate with digital processors like microcontrollers and microprocessors. Analog to Digital Converter (ADC) is an electronic integrated circuit used to convert the analog signals such as voltages to digital or binary form consisting of 1s and 0s. Most of the ADCs take a voltage input as 0 to 10V, -5V to +5V, etc., and correspondingly produces digital output as some sort of a binary number. What is Analog to Digital Converter? A converter that is used to change the analog signal to digital is known as an analog to digital...
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DSO & MSO (Block Diagram)

DIGITAL STORAGE OSCILLOSCOPE (DSO) The digital storage oscilloscope eliminates the disadvantages of the analog storage oscilloscope. It replaces the unreliable storage method used in analog storage scopes with digital storage with the help of memory. The memory can store data as long as required without degradation. It also allows the complex processing of the signal by the high-speed digital signal processing circuits.  In this digital storage oscilloscope, the waveform to be stored is digitised and then stored in digital memory. The conventional cathode ray tube is used in this oscilloscope hence the cost is less. The power to be applied to memory is small and can be supplied by small battery. Due to this the stored image can be displayed indefinitely as long as power is supplied to memory. Once the waveform is digitised then it can be further loaded into the computer and can be analysed in detail. Block Diagram As done in all the oscilloscopes, the input signal is applied to the...
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