The Simple Canary Bird Chirp Generator is a cool and easy electronic circuit that makes the cheerful chirping sound of a canary bird.
It works like an oscillator audio generator creating a sound that closely resembles the sweet chirps of birds.
You can use it in different areas like in electronic toys, fun sound making gadgets or even as a fun DIY project for anyone who loves electronics.
Plus it runs on a 9V PP3 battery, so it is easy for many people to use.
Circuit Working:
Parts List:
| Component | Specification | Quantity |
|---|---|---|
| Resistors | 47k 1/4 W | 1 |
| 4.7k 1/4 W | 1 | |
| Capacitors | Ceramic 10nF | 1 |
| Ceramic 22nF | 1 | |
| Electrolytic 100µF 25V | 2 | |
| Semiconductors | Transistor 8050 | 1 |
| Transformer | Audio output transformer LT700 | 1 |
| Others | Push button switch | 1 |
| 9V Battery | 1 |
The Simple Canary Bird Chirp Generator Circuit works based on how frequency modulation and oscillation function.
It gets its power from a 9V battery, which provides the necessary voltage for the oscillation to happen.
The main part of this circuit is the 8050 transistor Q1.
Together with capacitors C3 and C4 , it creates an oscillator that generates the frequency needed to produce the chirping sound.
The circuit also includes capacitors C1 and C2, which help change the oscillation frequency slowly mimicking the way birds change their pitches when they sing.
The oscillated signal then goes to a small audio transformer which drives an 8-ohm speaker to make the chirping noise.
Resistors R1 and R2 are important too as they help keep the transistor working properly.
The whole circuit starts when push button switch S1 is turned on allowing current to flow from the battery.
Formulas with Calculations:
The formulas with calculations are mentioned below for Simple Canary Bird Chirp Generator Circuit:
Frequency of Oscillation (f):
f = 1 / (2 * π * sqrt(L * C))
where,
- L is the inductance of transformer T1
- C is the equivalent capacitance in the circuit C3, C4
Time Constant for Frequency Modulation (τ):
τ = R * C
where,
- R is the resistance of R1 and R2 combined effect
- C is the capacitance C1, C2 this time constant determines how fast the frequency modulates giving the effect of a bird chirp.
Transistor Biasing Calculation:
The transistor must remain in active mode for proper oscillation:
V_BE = 0.7V
here,
The voltage divider formed by R1 and R2 ensures the transistor stays biased correctly.
How to Build:
To build a Simple Canary Bird Chirp Generator Circuit follow the below mentioned steps:
- Gather all the components mentioned in the above circuit diagram
- Connect the emitter of transistor Q1 to GND.
- Connect the base of transistor Q1 between resistor R1 and R2.
- Connect the collector of transistor Q1 to primary one wire of transformer as shown in circuit diagram.
- Connect a capacitor C3 one end to the base of transistor Q1 and other wire of primary end of transformer.
- Connect resistor R2, R1 and capacitor C1 in series from positive supply rail to GND.
- Connect capacitor C2 positive from positive supply and negative of capacitor to GND.
- Connect the primary center wire of transformer to positive supply
- Connect the secondary two wires to 8 ohm speaker wires respectively.
- Connect a S1 switch to positive supply rail of 9V battery and connect a negative supply of 9V battery to GND.
Conclusion:
The Canary Bird Chirp Generator is a simple circuit that demonstrates how oscillation and frequency modulation work.
It is a perfect project for beginners in electronics to learn about transistor oscillators and how to create audio signals.
By changing the values of the capacitors, you can adjust the sound to imitate various bird calls.
You can also make this circuit even better by adding a more powerful amplifier or connecting it to a microcontroller to create different chirping patterns.