Function Generators

A function generator is an indispensable tool for electronics testing and design, and it produces a variety of electrical waveforms, such as sine, square, and triangle waves, with adjustable frequency, amplitude, and DC offset. Also, function generators simplify circuit design and testing by providing controllable signals for various applications, and you can view the signals generated by the device by attaching them to an oscilloscope. Plus, they are essential for engineers and technicians working with audio circuits, filters, and other electronic systems.

Different Waveform Types

Function generators are versatile instruments capable of producing a wide range of electronic signals with varying waveforms. These waveforms are essential for testing and analysing electronic circuits and systems. Some of the common waveform types include:

Sine Wave

The sine wave is a fundamental waveform characterised by its smooth, continuous oscillation, and it is widely used in audio testing, signal processing, and communication systems. Typical function generators can produce sine waves across a frequency spectrum from a few hertz to several megahertz.

Square Wave

The square wave is a digital waveform that alternates between two voltage levels, and it’s commonly used in digital circuits, timing applications, and testing the response of electronic components to sudden voltage changes. Square waves generated by a function generator can range in frequency from hertz to kilohertz.

Triangle Wave

The triangle wave is a linear waveform that ramps up and down between two voltage levels, and it’s often used in analogue circuits, testing amplifiers, and generating sweep signals. A function generator can typically output triangle waves within a frequency range of hertz to kilohertz.

Sawtooth Wave

The sawtooth wave is a ramp waveform with a sharp drop-off. It finds applications in music synthesisers, oscilloscope timebases, and testing the linearity of electronic circuits. Frequency capabilities for sawtooth waves on a function generator typically extend from hertz to kilohertz.

Pulse Wave

The pulse wave is a non-sinusoidal waveform consisting of a series of rectangular pulses, and it’s used in digital circuits, data communication, and testing the transient response of electronic systems. Function generators can produce pulse waves with varying pulse widths and frequencies.

Primary Uses of Function Generators

Function generators are versatile tools used in various applications across different industries:

• Signal Testing: Function generators provide precise and controllable signals for testing electronic components, circuits, and systems. What’s more, they help verify the functionality and performance of devices under different signal conditions.
• Circuit Troubleshooting: When electronic circuits malfunction, function generators can help identify the source of the problem by injecting specific signals and observing the circuit's response.
• Frequency Response Testing: By generating signals with varying frequencies, function generators enable engineers to analyse the frequency response of circuits and systems, identifying resonant frequencies and potential issues.
• **Audio Testing: **Audio function generators produce audio-frequency signals for testing audio equipment, speakers, amplifiers, and other audio systems, ensuring proper functionality and sound quality.
• Control Systems: Function generators can simulate sensor signals or control inputs in control systems, allowing engineers to test and calibrate the system's response to various conditions.

Function Generators vs. Signal Generators

While the terms "function generator" and "signal generator" are often used interchangeably, there are key distinctions between the two. For instance, both generate electronic signals, but a function generator typically offers a wider range of waveforms, including sine, square, triangle, and sawtooth waves.

A signal generator, on the other hand, might primarily focus on sine waves, although some models may offer other basic waveforms. Plus, function generators are more versatile for general-purpose electronic testing, while signal generators might be used for more specialised applications.

Function Generators vs. Arbitrary Waveform Generators (AWGs)

While function generators and arbitrary waveform generators (AWGs) both produce electronic signals, they differ in their capabilities and applications. Function generators, for example, typically offer a set of standard waveforms (sine, square, triangle) with adjustable parameters.

AWGs, on the other hand, provide greater flexibility by allowing users to define and generate custom waveforms of virtually any shape. This makes AWGs suitable for more complex and specialised testing scenarios, while function generators are generally more cost-effective and sufficient for many common electronic testing needs.

How to Choose the Right Function Generator

Choosing the right function generator depends on your specific needs and applications. For instance, consider the required frequency range, waveform types, output amplitude, and accuracy.

If you need to buy a function generator, evaluate features like modulation capabilities, sweep functions, and built-in arbitrary waveform generation. For basic electronic testing, a standard function generator may suffice, while more demanding applications might require advanced features.

How to Order Function Generators from RS Hong Kong

RS Hong Kong offers a wide selection of function generators at reasonable prices and from leading brands like Aim-TTi, Keysight Technologies, and BK Precision. What’s more, you can easily order your preferred power signal generator online by browsing our comprehensive catalogue and adding your chosen device to your basket. Then, proceed to our secure checkout for a seamless purchase experience. If you require assistance or prefer to order over the phone, our dedicated team is ready to help at 852 2421 9898.

How Delivery Works at RS Hong Kong

RS Hong Kong is committed to delivering your function generator quickly and efficiently. Whether you buy a multimeter tester, digital clamp tester, or other testing equipment from us, you can access a range of delivery services to meet your needs. For detailed information on our delivery options, including specific timeframes, fees, and any applicable terms and conditions, please refer to our Delivery page. You'll find comprehensive information there to help you choose the most suitable delivery method for your requirements.