Intercom with fader
#intercom
#fader
#audio mixer
#volume control
#communication
#sound system
#microphone
#speaker
#analog circuit
#voice transmission
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intercom
This intercom utilizes a standard speaker to operate as its microphone. When the button is pressed, the relay switches, allowing the speakers to exchange their roles. One speaker functions as a regular speaker while the other serves as the microphone.
The...
A typical electronic volume control circuit
A typical electronic volume control circuit is commonly used in stereo audio devices connected through a computer (CPU). The circuit adjusts the volume of stereo signals via input and output pins. Control signals are sent to the CPU (including clock,...
Intercom
The circuit functions as a minimal component intercom system. When switch SI is set to the talk position, the speaker of the master station operates as the microphone with the assistance of step-up transformer T1. With a turns ratio of...
Sound Blaster Microphone Preamplifier
The circuit is fundamentally based on a well-tested simple microphone preamplifier design. A prototype of this circuit has been constructed and has demonstrated effective performance. The Sound Blaster soundcard series (SB16, SB32, AWE32, and AWE64) features a microphone input intended...
3 channel audio mixer (2N3904)
That circuit will provide an overall gain of one between the output and each input channel. Each input channel includes a single 0.1uf capacitor and 100-Kilohms resistor to provide an output impedance of 100K. The number of input channels to...
A simple three-way speaker crossover circuit diagram
The divider acts as the speaker's brain and is crucial for sound quality. The music amplifier's output signal must be processed through a wave filter element to divide it into specific frequency signals for each unit. A scientifically and rationally...
Dynamic Audio Mixer
The dynamic mixer combines two audio inputs by adding the primary signal, Input A, to a gain-controlled signal, Input B. The unique feature of this circuit is that the average voltage level of Input A controls the gain of Input...
Baby watch Intercom Circuit
It's a very simple circuit, for the follow-up of baby. It can however be also used for other use, as intercom etc. In the place of M1 we can we use a simple electret mic capsule. The regulation of gain...
A 20 Input Audio Mixer for Multiple Receiver Setups
The audio mixer allows for easy comparison of various receivers by adjusting the gain controls without the need for switching. This setup simplifies A/B comparisons since all receivers are connected to the same antenna. Previously, different speakers were used for...