Pulse signal generating circuit and display
It shows the dynamic AC signal level display drive circuit can be used for audio level display driver....
Pulse signal generating circuit and display
It shows the dynamic AC signal level display drive circuit can be used for audio level display driver....
Synth circuit
The core of this drum machine is from an electronic drum stick. You swing the stick and it makes drum sounds. The stick made 3 sounds; Snare, bass drum, and hig...
Loudspeaker to Microphone converter circuit
This circuit takes an ordinary loudspeaker and allows it to be used in reverse, as a microphone. This circuits allows you to use a cheap loudspeaker as a microp...
2G—10 Band Stereo Graphic Equaliser circuit diagram
This circuit must be connected before the amplifier circuit. For maximum performance, you may use high quality electronic component such as metalfilm resistor, ...
USB sound card
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Digital Message Recorder
The purpose of this digital electronics project is to record messages using a dedicated voice recorder integrated circuit. Recordings are stored in a non volati...
Circuit of graphic equalizer of 7 bands using it integrated la3607 of Sanyo
The circuit integrated la3607 allows to just set up a graphic equalizer of 7 bands for a channel adding some capacitors and variable resistors to the circuit. T...
preamplifier stereo tda1524a bass treble schematic
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Circuit Power audio Amplifier with TDA2030 2.1 Chanell 3 x 18 Watts Subwoofer Complete With PCB suggestion and power supply
This circuit is a complete application is 2. 1 amp, two satellite speakers for TDA and one for the subwoofer, making the 2. 1 system, widely used in commercial ...
Compressor For Electret Microphone
The FM Remote Control Receiver` (available on this website in Infra-red circuits section) has a connector where an analogue output is made available. To make a ...
TV Muter Circuit
Many households are still graced by tube-type television sets. If you want to connect one of these large tellies to your stereo system to improve the sound qual...
Microphones schematics and documents
The power supply was built into the base of the mic which can lead to hum issues despite the on-board potentiometer that acts as a `null`. This also means that ...
Tube mic Connecting the capsule 1
Even in the simplest of tube microphone circuits, there are different approaches to connecting the microphone capsule to the tube. Let`s use a single-sided micr...
Tube mic Connecting the capsule 2
Connecting a condenser capsule to the grid of a tube amplifier, in order to build a tube mic. In this part we consider how to connect a capsule with two diaphra...
Audio Signal Generator
A couple of cheap CMOS ICs are used to digitally generate audio sinewaves across a wide range in this compact battery-powered test instrument. The oscillator fe...
Ultrasonic Dog Whistle
It`s well known that many animals are particularly sensitive to high-frequency sounds that humans can`t hear. Many commercial pest repellers based on this princ...
Speaker Mic Circuit
This circuits allows you to use a cheap loudspeaker as a microphone. Sound waves reaching the speaker cone cause fluctuations in the voice coil. The voice coil ...
Audio Voice-Over Circuit
This is a circuit where a microphone and preamp circuit (voice circuit) have priority over any other audio signal. You can think of this as a one way intercom, ...
Peak Reading Audio Level Meter
Using minimum component count; this simple circuit will indicate peak audio response on an analogue meter, similar to a tape recorders meter. The circuit uses a...