1KHz Sine Wave Signal Generator – Ultra-Low Distortion Oscillator
1KHz Sine Wave Signal Generator – Ultra-Low Distortion Oscillator
1KHz Sine Wave Signal Generator – Ultra-Low Distortion Oscillator Circuit Board
Take your audio and electronics testing to the next level with this precision-engineered 1KHz Sine Wave Signal Generator Circuit Board. Featuring an industry-leading distortion coefficient of just 0.000064% (–124dB), this compact module delivers an exceptionally pure and stable sine wave output — ideal for engineers, hobbyists, and audio professionals who demand accuracy.
Key Features
- Ultra-Low Distortion: Distortion coefficient of 0.000064% — less than 0.001% — ensuring unmatched signal purity for high-precision applications.
- 1KHz Sine Wave Output: Rock-solid 1KHz oscillation frequency, precision-matched using a digital meter for accuracy and stability.
- High Output Voltage: Output voltage greater than 7V, suitable for a wide range of test and measurement scenarios.
- Energy-Efficient Operation: Powered by ±15V at only 30mA — low-power design that runs efficiently without excess heat.
- NE5532 Op-Amp Chip: Built around the industry-trusted NE5532 chip for reliable, high-performance signal generation.
- Precision-Matched Components: Frequency-controlling capacitors are hand-selected and paired using a digital meter; frequency resistors use a 3.3KΩ resistor in series with a 200Ω 3296 multi-turn potentiometer for fine-tuned accuracy.
- Versatile Applications: Perfect for harmonic distortion testing, level testing, regenerative power supply circuits, and audio amplifier evaluation.
- Compact Form Factor: Measures just 90 × 49 × 16mm — easy to integrate into any test bench or DIY electronics project.
Technical Specifications
| Output Frequency | 1 KHz (adjustable for other frequencies) |
| Distortion Coefficient | < 0.001% (typ. 0.000064% / –124dB) |
| Power Supply | ±15V DC, 30mA |
| Output Voltage | > 7V |
| Op-Amp IC | NE5532 |
| Dimensions | 90 × 49 × 16mm |
| Battery Included | No |
| Country of Origin | Made in Mainland China |
Technical Notes
- For minimum distortion, component values should satisfy: R10 = 2×R13 and C3 = 2×C4.
- To change the output frequency, adjust R6, R7, C1, C2, and R11 accordingly. Examples: 50Hz → R11 = 447KΩ; 60Hz → R11 = 408KΩ.
What's in the Box
- 1× 1KHz Sine Wave Signal Generator Circuit Board
Please Note: Colors may vary slightly due to monitor settings. Allow ±1–10mm measurement tolerance due to manual measuring.
For more information on signal integrity and electronic measurement standards, visit the National Institute of Standards and Technology (NIST) – Electronics.
Frequently Asked Questions
Q: What is this 1KHz sine wave signal generator circuit board used for?
A: This oscillator circuit board is designed for high-precision applications including harmonic distortion testing, audio level testing, amplifier evaluation, and regenerative power supply circuits. Its ultra-low distortion output makes it ideal for engineers and audio professionals who require a clean, stable 1KHz reference signal.
Q: Can this signal generator be adjusted to output frequencies other than 1KHz?
A: Yes. While the board is factory-set for 1KHz, you can modify the output frequency by adjusting components R6, R7, C1, C2, and R11. For example, for 50Hz output set R11 to 447KΩ, and for 60Hz set R11 to 408KΩ. Refer to the component guidelines for your target frequency.
Q: What power supply does this oscillator board require?
A: The board requires a dual-rail ±15V DC power supply with a current draw of only 30mA. No battery is included. Its low-power design makes it energy-efficient and suitable for extended bench use.
Q: What op-amp chip does this circuit board use?
A: This signal generator is built around the widely trusted NE5532 op-amp IC, known for its low noise and high performance in audio and measurement applications.