INDEX

Here you can use 1Kpot or 10Kpot instead of 470ohm potentiometer.
Connect this circuit and start testing comparator LM324.
1. Insert IC properly into the breadboard.
2. Apply Vcc=+5v and -Vcc=0V
3. This circuit is used to test 324 the four operational amplifiers before
using in the circuit.
4. Vary V1 and V2 to see the Vout.
5. Use multimeter or LED to see Vout and test the conditions of a
comparator.

This circuit is used to turn ON light or any equipment if the light intensity is below a level. This level is set by 470ohm pot (i.e, V2 is the reference). You can make the same circuit using power transistor, but difference between two. When Vcc=5V and I apply v+=10v and v-=4.5 then output is 3.84 when Vcc=12V same input o/p 11.45 so be careful of vcc of Lm324
TIPS:
1. When u connect Vcc of Lm324 to gnd, then it will easily get heated.
2. The input cannot be greater than Vcc
3. You should remember that when using multiple voltages, Vcc
should be greater than maximum voltage. Otherwise you will get
wrong results.