This section provides an overview for low frequency module oscillators as well as their applications and principles. Also, please take a look at the list of 2 low frequency module oscillator manufacturers and their company rankings.
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A low Frequency module oscillator is a device that generates a relatively low-frequency signal.
The definition of the term "low frequency" itself varies depending on the field in which it is used, but the specifications of low Frequency module oscillator as sold machines range roughly from a few Hz to several hundred kHz.
An oscillator circuit can be used to generate an AC signal of a specific frequency. Generally, it is responsible for generating reference signals in tests using frequency signals.
Signals in the range of approximately 20 Hz to 20 kHz that can be produced by oscillators are in the audible range and can be heard by humans as sound when amplified.
In most electronic devices that use frequency signals, high frequencies are used.
Regular low frequencies are sound waves, so audio equipment is the main circuit that uses low-frequency signals.
Low frequency module oscillators are used to analyze the frequency response of audio equipment. For example, an audio amplifier is used as a device under test (DUT), and the input signal is generated by low frequency module oscillators.
By analyzing the output signal with an FFT analyzer, the characteristics of the amplifier under test can be analyzed.
Low frequency module oscillators generates a stable frequency signal based on an oscillation circuit.
RC (or CR) type oscillator circuits are used at low frequencies, including Vienna bridge circuits, bridged T-type circuits, and state variable circuits.
Both of these types of oscillators are generated by adjusting the feedback of the amplifier. The Wien bridge circuit is well known and used because of its simplicity of having only one amplifier in the circuit.
On the other hand, the state variable type provides a lower distortion and 2-phase output. A variable resistor or a variable capacitor may be used to control the frequency.
A sine wave with constant amplitude cannot be obtained from an RC oscillation circuit alone.
Therefore, a device to control the amplitude is required. There are methods of adjusting the feedback amount using an element whose resistance changes according to the applied voltage, such as a light bulb or thermistor, and methods of assembling an electronic circuit that adjusts the feedback amount by detecting the voltage at the output.
*Including some distributors, etc.
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