wk4Difference_amplifier

wk4Difference_amplifier - Operational Amplifiers...

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Operational Amplifiers Differential Op-Amp Circuit Name: ________________________________________ Date: __________________ PROJECT PURPOSE This project demonstrates the operation of a differential (difference) amplifier. V s s V R 1 3 1 0 k - + U 1 D L M 3 2 4 1 2 1 3 1 4 - + U 1 B L M 3 2 4 5 6 7 A V c c V c c B V s s V s s R 3 2 0 k R 4 1 0 k R 1 1 0 k R 1 1 1 0 k - + U 1 A L M 3 2 4 3 2 1 4 1 1 P l a c e o n e 0 . 1 µ F c a p a c i t o r f r o m U 1 p i n 4 t o g r o u n d R 2 2 0 k P l a c e o n e 0 . 1 µ F c a p a c i t o r f r o m U 1 p i n 1 1 t o g r o u n d N O T E S : V O U T U 1 C L M 3 2 4 1 0 9 8 V c c = 1 5 V V V s s = - 1 5 V V c c U 1 D i s n o t u s e d Figure 1 Differential Amplifier PARTS NEEDED DMM CIS ±15 VDC power supply Operational amplifier: LM324 Resistors 10 k (2) 20 k (2) Trim Potentiometer: 10 k (2) Page 1 of 4
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SPECIAL NOTE: You will need the following formula to complete the work: A B OUT V R R V R R R R R V × - × + × + = 1 2 1 2 4 3 4 1 PROCEDURE 1. Connect the circuit exactly as shown in Figure 1. The LM324 contains four operational amplifiers
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This note was uploaded on 05/08/2011 for the course ECET 220 taught by Professor Smith during the Spring '11 term at DeVry Austin.

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wk4Difference_amplifier - Operational Amplifiers...

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