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Building a mass balance to measure small weights (0g-100g) using a rotary potentiometer
Member rating: No Rating | Words: | Submitted: Thu Jan 13 2005
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BUIDING A MASS BALANCE TO MEASURE SMALL WEIGHTS(0g-100g) USING A ROTARY POTENTIOMETER Introduction: Nowadays, we have mass balances, weighing scales etc to measure masses but we hardly have devices that measure small masses. Sometimes, we may have to measure objects with small masses say 10g to 100g and my model is created backed up with this idea. Components Used: Digital multi-meter, Meter rule, Retort Stand, Clamp, Rotary potentiometer, Power supply (5V), Spring, Masses (in unit of 10g), 2k and 3k resistors, 1k variable resistor, amplifier. Reason For Choice Of Components: * Rotary Potentiometer: I used a rotary potentiometer so that when masses are placed on the meter rule the change in voltage (output) could be noted. The rotary potentiometer is of 5k Ohms but I connected it to a 5V power supply as a more convenient way of measure. As the potentiometer moves the resistance changes and also does the voltage. *...
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