Simple Mixer
The circuit consists of two op-amps configured as summing amplifiers, each allowing for the combination of multiple audio signals. The four inputs can be connected to various audio sources, such as microphones or line-level effects, with each input channel equipped with a potentiometer to control the individual signal levels before mixing.
The first op-amp serves as a summing node, where the signals from the inputs are combined. Resistors are used to set the gain and ensure that the output does not exceed the input levels, maintaining audio fidelity. The second op-amp can be utilized for buffering the mixed output, providing a low-impedance output suitable for driving further stages in an audio system, such as amplifiers or speakers.
Power supply considerations for the op-amps are essential, typically requiring a dual polarity supply to accommodate the audio signal swing. Decoupling capacitors should be placed near the power pins of the op-amps to minimize noise and improve stability.
Overall, this simple mixer design is effective for basic audio applications, allowing for flexible mixing of multiple signals with straightforward gain control.Here the simple mixer with 4 input and 2 op-amps: A basic mixer suitable for mixing microphones or even effects outputs. The overall gain from input to output is one if the pot related towards the input is full up. You can make this a net g.. 🔗 External reference
Related Circuits
L1 and L2 were constructed by wrapping three tight loops side by side around a Sharpie marker. L2 was additionally created by wrapping approximately 8 inches of 35 AWG magnet wire around a ferrite core, ensuring that the windings...
The typical BPM range for music is between 40 and 240 BPM, corresponding to periods of 1500 ms and 200 ms, respectively. A BPM of 120 equates to a period of 500 ms. The circuit requires a resistor R4...
This tutorial outlines the construction of a simple FM transmitter utilizing a single transistor. The project requires minimal components, making it suitable for beginners. Before proceeding, refer to the schematic provided below, which details the components necessary for building...
A high signal-to-noise ratio is crucial in signal construction and combination. The HA-5147 helps to reduce overall system noise, thereby increasing system sensitivity. The signal combination circuit includes input buffering along with several other features to create an efficient...
This circuit utilizes the widely available LM3914 integrated circuit (IC). The LM3914 is straightforward to operate, does not require external voltage regulators due to its built-in voltage regulation, and can be powered by a variety of sources. The LM3914 is...
The combination of video signals with pulses involves the inversion of the input signal. The resistor R4 is specified as 270 ohms for the 5670 model and 470 ohms for the 6021 model. Additionally, R2 is set to 680...