Microphone Circuit Test Oscillator
Posted on Nov 16, 2012
New Circuits
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This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of.... -
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is.... -
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to.... -
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This.... -
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the.... -
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,.... -
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the.... -
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power.... -
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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This is a small but quite powerful FM transmitter having three RF stages incorporating an audio...
This project arises from the need to home-build a valid tuning control for a multi band...
This is a portable oscilloscope adapter that it can be held in breast pocket. Its operation is...
The first version of the schematics is finished. There are still some optimizations to do,...
I made an hbridge using TPS2836 and CSD16404. The schematic is shown below. It does not work...
This LM12 audio amplifier circuit will provide a high output power on a 8 ohms or 4 ohms load...
The oscillator model I talked about in the introduction to oscillators was as simple as it gets -...
There are many techniques to make an FM transmitter stable so it will not change its frequency as...
The reception of 2 metre signals is generally with a converter and short wave receiver,...
This electronic door buzzer circuit schematic has a very simple function and is very easy to...
Nothing in this project is real original, but I did do a couple of modifications from the...
A 99 nissan sentra 1. 6 I recently put a new motor in and I have no power to my coil. I have...
Here is the design of an audio oscillator that runs at approximately 1 KHz. I don`t remember...
Lithium-based (Li+) batteries are becoming common in portable equipment. They have desirable...
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