Sound Controlled Flip Flop
Sound Controlled Flip Flop
Sound Controlled Flip Flop
Accredited by National Board of Accreditation (NBA), New Delhi. Shamshabad - 501 218, Hyderabad.
Mini project
BLOCK DIAGRAM:
Sound input
Condenser microphone
COMPONENTS:
1. Condenser mic 2. IC LM324 3. IC CD4027 4. Transistors 4 5. Capacitors 1uf 0.1uf 100nf 0.47uf 100uf 6. Resistors 10k - 4 1M 100 - 2 100k 4.7k 7. DC motor
CIRCUIT DIAGRAM:
COMPONENTS:
1. 2. 3. 4. 5. Condenser mic IC LM324 IC CD4027 Transistors 4 Capacitors 1uf 0.1uf 100nf 0.47uf 100uf 6. Resistors 10k - 4 1M 100 - 2 100k 4.7k 7. DC motor
ADVANTAGES:
1. This circuit can control more than one device . 2. This circuit has many phono-controlled applications like remote switching on, for instance, for activating a camera, tape recorder, burglar alarms, toys, etc.
3.
Since the circuit operates at 4.5V, it can be easily incorporated in digital circuits.
DISADVANTAGE: An unregulated supply can cause noise pulses to appear in the supply rails when the
circuit changes-over state (especially when a load is connected to the circuit). These pulses can be picked up by the sensitive amplifier which will cause the circuit to again switch-over states, resulting into motor-boating noise.