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Sample & Hold Circuit

 
Sample & hold circuit is a device that is generally used to convert analog signal into its digitised form i.e. when an analog signal is applied at the input terminal of sample & hold circuit, it assigns a digital level to every pulse with the help of the switch. The output so generated by sample and hold circuit is used to convert data into digital signals by means of analog-to-digital convertor (A/D).
 

 

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(a) Schematic diagram
 

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(b) Practical diagram

Fig. : Sample-and-hold circuit





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