This circuit is a digital flip-flop whose output will change to a compilation controlled using sound. Therefore the input used is a condenser mic because it is known to have high sensitivity.
The op-amp IC used in this circuit is the LM324 IC. This IC serves to strengthen the signal input from the condenser microphone. Besides, the LM 324 IC functions as a level detector, which regulates the microphone’s electrical signal higher than the op-amp’s reference voltage, and uses the CD-2727 flip-flop IC. Thus, IC 4027 output will always be ready to be compiled.
Part list:
| Resistors: R1, R2, R3, R7 = 10k R4 = 1M R5, R8 = 100 ohm R6 = 100k R9 = Trimmer Potentiometer 5K Semikonductors: IC1 = LM324 IC2 = CD4027 | Capacitors: C1 = 100uF/16V C2 = 100nF/16V C3 = 0.47uF/16V C4 = 1uF/16V C5 = 100nF Others: M1 = Condenser mic |
When assembling this circuit, use a good quality PCB. This package can be operated with a battery or power supply. To Avoid Damage, it is better to use an IC holder. Resistor.
