Electronic Circuit Schematic Audio Oscillator using IC ICL8038

Eltronicschool. - In this moment Eltronicschool will try to share with you about one of simple electronic circuit schematic of Audio Oscillator using IC ICL8038. In here we will show global description about the working of IC ICL8038 to generate pulse and then we also give you the circuit schematic to built Audio Oscillator using IC ICL8038.

Circuit Schematic

Figure 1. Audio Oscillator Schematic using IC ICL8038 (Circuitstoday)

Component Lists

1. R1,R2 ............... 4K7
2. R4 ...................... 1K
3. R5 ........................15K
4. R6 ....................... 10K
5. R7 ........................ 15M
6. R8 ........................ 20K
7. R9 ........................ 100K
8. C1 ........................ 0.1 uF
9. C2 ........................ 4.7nF
10. D2 ....................... IN457
11. IC1 ....................... ICl8083

Description

The electronic circuit schematic of Audio Oscillator using IC ICL8083 show like in figure 1 above. The main active component of this circuit is IC ICL8083. To know more about the description of this IC please follow the description below:

1. The external timing capacitor (C2 in the circuit diagram) is charged and discharged using two internal current sources. The first current source is on all the time and second current is switched ON and OFF using a flip-flop. 
2. Suppose the second current source is OFF and the first current source is ON, then the capacitor C2 will be charged with a continuous current (i) and the voltage across C2 increases linearly with time. 
3. When the voltage reaches 2/3 supply voltage, controlling flip flop is triggered and the first current source is activated. This current source carries double the current (2i) making the capacitor C2 is discharged with a current i and the voltage across it drops linearly with time. 
4. When this voltage reaches 1/3 supply voltage, the flip flop is resetted to the initial condition and the cycle is repeated again.

Source: Circuitstoday blog.