Introduction about Flip Flop
In electronics, many of the circuits like counters, registers, and frequency dividers use the flip flop to transfer or store the data. If we talk about the flip-flop examples in real-life then token counters and microwave oven timers can be considered their basic applications. Practically, flip flops are made from the logic gates like NAND, NOR, etc. And, contains two input and two output states. However, flip flops are of many types, like SR, JK, T, etc. But, in this article, we will make a sound-operated flip flop by using the JK-type flip flop IC.
To power the circuit we have used three 1.5V cells in the series. Also, the capacitors are rated 10V. Further, the mic we have used is the condenser mic. Moreover, for a flip-flop, we have used the IC CD4027.
Specifications of CD4027 IC
- It has a dual JK flip-flop.
- Its operating voltages are 5Volts, 10Volts, and 15Volts.
- The maximum operating voltage is 20V.
- Input rise and fall time at 5Volts is 45us.
Hardware Required
| S.no | Component | Value | Qty |
|---|---|---|---|
| 1. | IC | CD4027 | 1 |
| 2. | IC | LM324 | 1 |
| 3. | Ceramic Capacitor | 0.1uF, 0.47uF, 100nF | 1, 1, 1 |
| 4. | Electrolyte Capacitor | 1uF, 100uF | 1, 1 |
| 5. | Resistor | 100 ohms, 10K, 100K, 1M | 2, 4, 1, 1 |
| 6. | Potentiometer | 4.7K | 1 |
| 7. | Condenser mic | – | 1 |
| 8. | Power Supply | 4.5V DC |
Circuit Diagram
Working Explanation
This circuit of sound-operated flip-flops contains the IC LM 324. The internal structure of the IC contains the four high-gain operational amplifiers. However, we are utilizing only three of them. The first two of them are used to amplify the input audio signal. While the third one is working as the detector. Whenever the voltage gets higher than the reference voltage at pin 5, it makes pin 7 high. Since Pin 7 is wired with the JK flip-flop IC CD4027. Therefore, triggers that IC. As a result, the output toggles at each outburst of sound.
Application and Uses
- It can be used in sound-operated devices.
- Also, in the electronic clapper circuits.
- In sound operated switches.
- In sound-operated devices.
