IC741 tutorial
This tutorial is taken from the book MY EXPERIENCE IN AUTONOMOUS ROBOTICS. you can download it free from the files section(FILE-ROBO.PDF) of yahoo group-booksbybibin http://groups.yahoo.com/group/booksbybibin/ comments about this book on www.booksbybibin.blogspot.com IC741 We mostly use IC 741 as amplifier,adder,subtractor, adder cum subtractor. I am not giving more explanation because you can easily get circuit in internet or normal class texts. See the circuits of amplifier,adder,subtractor. http://www.uoguelph.ca/~antoon/gadgets/741/741.html
Power supply voltage +/-3V to +/-18V
Maximum differential input voltage 30V
Maximum voltage to either input 15V
Maximum power dissipation 500mW
Open-loop voltage gain 100,000
Input Resistance 2Mohm
CMRR 90dB
Slew Rate .5V/uS
The 741 has two inputs and one output. The difference
between these two inputs is amplified and that is what appears at the output.
For this reason,
the 741 is sometimes called the DIFFERENCE AMPLIFIER or
COMPARATOR.
Normally we use -Vcc = -12V and +vcc= +12V which is preferred over +/-15V
because it is easy to generate for us. See the power supply section for the ckt to
generate +/-12v from 230V AC.
Why LM324 is preferred over IC741?
1.If you use IC741 as comparator with Vcc=5V and -Vee=0 then for HIGH=4.5V
and LOW=1.52, so in both condition transistor will be saturated, so in order to use
IC741 as a comparator better apply -15,+15.
2. when LM324 is used with Vcc=5V then HIGH=3.6V(but this is the logic high
for digital circuit) and LOW=0. So this will be better, you won't be able to get
HIGH=5V.
3. In 741 when Vcc=5V,Vee=1.33V then HIGH=4.0 and LOW=0V. This is
the reading which i got.
4. The best way of checking IC741 and IC324 is by using comparator
configuration. But remember in checking case the input voltage to the
comparator should be less than the supply voltages used. The output voltage
will be some Vcc-2V and -Vee+2V at max.
5. You can used Vcc/ Vee to +/-9V at min for good response
This tutorial is taken from the book MY EXPERIENCE IN AUTONOMOUS ROBOTICS. you can download it free from the files section(FILE-ROBO.PDF) of yahoo group-booksbybibin http://groups.yahoo.com/group/booksbybibin/ comments about this book on www.booksbybibin.blogspot.com IC741 We mostly use IC 741 as amplifier,adder,subtractor, adder cum subtractor. I am not giving more explanation because you can easily get circuit in internet or normal class texts. See the circuits of amplifier,adder,subtractor. http://www.uoguelph.ca/~antoon/gadgets/741/741.html
Power supply voltage +/-3V to +/-18V
Maximum differential input voltage 30V
Maximum voltage to either input 15V
Maximum power dissipation 500mW
Open-loop voltage gain 100,000
Input Resistance 2Mohm
CMRR 90dB
Slew Rate .5V/uS
The 741 has two inputs and one output. The difference
between these two inputs is amplified and that is what appears at the output.
For this reason,
the 741 is sometimes called the DIFFERENCE AMPLIFIER or
COMPARATOR.
Normally we use -Vcc = -12V and +vcc= +12V which is preferred over +/-15V
because it is easy to generate for us. See the power supply section for the ckt to
generate +/-12v from 230V AC.
Why LM324 is preferred over IC741?
1.If you use IC741 as comparator with Vcc=5V and -Vee=0 then for HIGH=4.5V
and LOW=1.52, so in both condition transistor will be saturated, so in order to use
IC741 as a comparator better apply -15,+15.
2. when LM324 is used with Vcc=5V then HIGH=3.6V(but this is the logic high
for digital circuit) and LOW=0. So this will be better, you won't be able to get
HIGH=5V.
3. In 741 when Vcc=5V,Vee=1.33V then HIGH=4.0 and LOW=0V. This is
the reading which i got.
4. The best way of checking IC741 and IC324 is by using comparator
configuration. But remember in checking case the input voltage to the
comparator should be less than the supply voltages used. The output voltage
will be some Vcc-2V and -Vee+2V at max.
5. You can used Vcc/ Vee to +/-9V at min for good response