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ELECTRICIAN - CITS

EXERCISE 68 : Assemble different OP-AMP circuits using

IC 741

Objectives
At the end of this exercise you shall be able to:
• assemble the voltage follower circuit using OPAMP 741 and observe the input and output waveform
• assemble the zero-crossing detector circuit using OPAMP 741 and observe the input and output waveform
• assemble the inverting amplifier circuit using OPAMP 741 and observe the input and output waveform
• assemble the NON- inverting amplifier circuit using OPAMP 741 and observe the input and output waveform
• assemble the integrator circuit using OPAMP 741 and observe the input and output waveform
• assemble the differentiator amplifier circuit using OPAMP 741 and observe the input and output waveform
Requirements

Tools/Equipments/Instruments

• Side cutting pliers 150mm -1 No. • OPAMP IC UA 741 -1 No.
• Electrician knife 75mm -1 No. • Bread board 175x67x8mm -1 No.
• Tweezers 75mm -1 No. • DC power supply 0-30V -1 No.
• Function generator 20MHz -1 No. • Hook up wire -1 m.
• CRO 30MHz -1 No.
Procedure

TASK 1: Assemble the voltage follower circuit using OPAMP 741 and observe the input and output
waveform
1 Draw the circuit diagram
2 Connect the circuit as per circuit diagram. Refer Fig1a
3 Connect +Vcc 15V to pin 7 and –Vcc 15V to pin 4.
4 Apply the input signal with function generator.
5 Observe the input and output waveforms and record voltage level in Table1. (Fig 1b provides indicative
waveforms)
6 Plot the input and output waveform.

Fig 1a Fig 1b

Fig 1a Voltage follower Fig 1b Voltage follower
Table 1

Sl.No Vin peak Vout peak

142