NE566 Voltage Controlled Oscillator (VCO)
The term NE566 refers to an integrated circuit known as a Voltage Controlled Oscillator (VCO).
What it is used for
The NE566 is mainly used to generate waveforms whose frequency is controlled by an input voltage. In simple terms, it converts a voltage input into a frequency output.
Block Diagram
The block diagram of NE566 shows its internal functional sections:
-
Voltage-to-current converter
Converts the input control voltage into a current. -
Current-controlled oscillator (integrator)
Charges and discharges a capacitor to create oscillations. -
Schmitt trigger / comparator
Switches the waveform at specific threshold levels. -
Output buffers
Provide usable output signals like square and triangle waves.
Summary
The NE566 block diagram helps us understand how the IC generates frequency-based signals from a voltage input.
Applications:
- Function generators
- Frequency modulation (FM)
- Tone generation
- Signal processing