This is a very useful and versatile circuit. In many circuits a speaker is used as a microphone for example in intercoms, one ways telephones or as an emergency microphone in these types of circuits speaker...
Audio limiter is use to limit the audio signal to a desired value. In many audio devices we feel the need of audio limiter. Listening a radio and searching for stations on the radio dial provide fun but on short wave band not every signal is equal...
In this circuit the NE555 IC is working as an audio amplifier. The circuit is very easy to build using few components. BC 549 is a general...
Here is a very simple project of a door bell circuit. The heart of the circuit is UM66 melody IC which is a great and very famous...
The circuit mentioned here is a single transistor amplifier. This type of transistor circuit is mostly....
Here is a schematic of a simple 555 organ circuit.The circuit is consist of two parts first 555 circuit of organ and second lm386 amplifier for driving 8 ohms speaker....
This is a project of a ding dong door bell circuit using 555 IC. The frequency of sound can be controlled with 5.6k and 10k resistors. The transistor 9013 is used....
This is a project of a 555 buzzer circuit. The circuit mentioned below will produce a buzzer sound when 9 volt power will be applied....
The circuit we are going to discuss here is a four siren sound generator using UM3561 IC which is a low power CMOS IC. The four different sounds can be...
Circuit of a 15x2 watt audio amplifier using TDA4935 IC. TDA 4935 is a stereo audio amplifer IC which supports two speakers output (15 watt each) and requires...
The circuit mentioned here is a small easy to build Intercom circuit using one LM386 IC one 2N3904 transistor and few other components. LM386 is...
Here is the circuit of 20W audio amplifier using LM1875 IC. LM1875 is a very high quality low distortion 20 Watt audio amplifer IC available...
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