Many electronics circuits and projects for learning in simple ways.

Simple LM741 circuits

This is all simple LM741 circuits, it is very useful as amplifier, LM741 is a general purpose single operational amplifier. The UA741 is a high performance monolithic operational amplifier constructed on a single silicon chip.

LM741 datasheet

741 op-amp DIP 8 pins

From advances in the manufacture of an integrated circuit. Circuits of the op-amp, can be total production on tiny silicon sheets. That is packaged in a plastic DIP 8-pin, IC op amp is the number of Fairchild, Since the year 1965.

And the op-amp IC is number 741 in the second year. Fri 1968 By the op-amp 741 is still popular today, The price of the op-amp circuits, as well as a single transistor.

Features of ideal op-amp

IdealOP-Amp IC-741
1. Voltage gainAOL?200,000 V/V
2. Output impedanceRo075?
3. Input impedanceRi?2 M?
4. BandwidthBW?1 MHz

 

741 op-amp pinout

I think you want to use 741 op-amp. It is so easy if you know about the its legs or 741 pinout. Although there are only eight legs, each leg is important.

Internal Structure of 741-op-amp
Internal Structure of 741-op-amp
  1. Pin 1—Offset null
  2. Pin 2—Inverting input
  3. Pin 3—Non-Inverting input
  4. Pin 4—Negative Supply
  5. Pin 5—No connection
  6. Pin 6—Output
  7. Pin 7—Positive Supply
  8. Pin 8—Offset null

I collect a lot of IC-741 circuits or tiny amplifier using 741 op-amp as main. For use in various applications, In different ways.

Clipping Amplifier Circuit

When an amplifier is overdrive output waveform of voltage and current distortion. it is limit size value.

This is Clipping Amplifier Circuit using LM741 popular op-amp IC. It is basic clipping amplifier,If input is sine wave to distorted square wave type waveform. Vout = -Vin(R2/R1) But the Vout not up to Vz+0.7V

D1 and D2 be zener diode if use 6V values have already the pressure output not exceed +/- 6.7V.

Clipping amplifier by LM741

Basic Differentiator using LM741

Basic Differentiator by LM741

Inverting Amplifier by IC LM741

Friends at study about the integrated circuit op-amp may nobody that strange Inverting Amplifier by IC LM741. Today we come to see this circuit again. Reserve will valuable in applying work other circuit. Get in the future by we fix R1 and R2.

As a result will seek the value Vout get from a formula. Vout = -Vin(R2/R1) As a result request friends jubilantly with using integrated circuit LM741 please sir.

Inverting Amplifier by IC LM741

Non – Inverting Amplifier by IC LM741

This is Non – Inverting Amplifier Circuit by IC LM741.
For amplifier signal Frequency low power.

Today we try out Non – Inverting Amplifier circuit by IC LM741. Many you have who to ever study about the integrated circuit op-amp may appear familiar good with this circuit. It basically the base of amplifier circuit. Can induce apply the work has very plentiful from our circuit has can to calculate seek equipment value.

By appraise R1 and R2 control the expansion ratio has of the circuit as follows, Vout = Vin(1+ R2/R1) Request friends have fun Non – Inverting Amplifier Circuit by IC LM741, please sir.

Non - Inverting Amplifier by IC LM741

Clipping Amplifier by LM741

When an amplifier is overdrive output waveform of voltage and current distortion. it is limit size value.

This is Clipping Amplifier Circuit using LM741 popular op-amp IC. It is basic clipping amplifier,If input is sine wave to distorted square wave type waveform. Vout = -Vin(R2/R1) But the Vout not up to Vz+0.7V

D1 and D2 be zener diode if use 6V values have already the pressure output not exceed +/- 6.7V.

Clipping amplifier by LM741

Summing Amplifier by LM741

The summing amplifier is a handy circuit. It are a type of operational amplifier circuit and an inverting amplifier mode. You can add several voltages input together. More than two inputs can be used.

In circuit:
Vout = -R4 ((Vin1/R1) + (Vin2/R2))
When R1 = R2 .
Vout = – R4/R1 (Vin1+Vin2)
When R1=R2=R4 .
Vout = – Vin1 + Vin2

Summing Amplifier by LM741

We seen the information in https://en.wikipedia.org/wiki/Summing_amplifier#Summing_amplifier .

An audio mixer circuit is another good example of the summing sounds from different channels together, before send the combined signal to next an amplifier circuit.

Basic Integrator using LM741

This is the basic integrator circuit used IC op-amp 741 is important part. The follow by range of input into the R1 is Element Input and the C1 is feed back element. This circuit has a different form differentiator circuit. The relationship of the incoming signal frequency, has the effect of changes in voltage output as well, so increased in parallel with R2 to control C1 (Low Frequency Resistor) when the frequency changes.When the frequency changes, and increased leg R3 Non-Inverting. To reduce the voltage Voi.

Basic Integrator by LM741

Single Polarity Supply circuit using IC -LM741

This is a simple Single polarity (negative to positive polarity) power supply circuit, For education, the work of a series op amplifiers. Since we use the input pin is a pin non-inverting, it is an important condition. We try to come to see this circuit use op-amp IC LM741, be usable easily and, It can change R1, R2 for fix the expansion ratio has of the circuit with. See the detail in the circuit adds.

Single Polarity Supply circuit using IC -LM741

the input power must be negative only, As a result, the output voltage. However, if the input is positive, it will not delete the output. Because we used the power supply terminal positive and negative only.Or 4 pin connection with the ground. This circuit may be adapted to the negative circuit. Or to converter a negative voltage to positive voltage.

The buffer OP-AMP 741

The buffer op-amp circuit. We use it for coupling two circuits together. Or the Unity Gain Follower Voltage Follower used to transfer or copy a voltage from a first circuit (Vin) to a second circuit (V out).

The input has high impedance, and the output is low impedance. such as the differential family of the IC or transistor that’s not good impedance matching.

Buffer OP-AMP using LM741
Buffer OP-AMP using LM741

The op-amp IC objects have the output low impedance and input high impedance. When connected to other circuits, so there is no any effect. The gain is equal to 1 always. Does not to change any signal.

Vin = Vout

This circuit is an example of a buffer op-amp circuit, use IC Number LM741 performs this function very well, does not require any additional equipment. We can use signals with any format, but the frequency response up to 1Mhz.

And limit the maximum voltage level power supply circuit is about 18V. This circuit voltage power supply is +/- 5V to 18V.

Unity Gain Follower using LM741

unity-gain-follower-by-ic-lm741

This Post Has One Comment

  1. Hi I would like to build voltage amplifier as weel as regulator using lm741. The input would be 0.05mv to 50volt. The input pulses per min would be 1-30000. The output pulse should be regulated 5 volt at all frequencies and voltage inputs. Plz if anyone could help me.

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