headphone jacks
Posted on Feb 5, 2014
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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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the AD844 was still used, but this time the feedback loop went all the way from output and back...
This circuit detects brief shorts or opens. When S2 is in the up position, the circuit indicates...
This stereo FM wireless microphone also makes a great quality audio link. We tested it to beyond...
As the only electronics engineer in my family and circle of friends, it is sometimes not possible...
TDA2822 is a stereo low-power op amplifier used in the Walkman and headphones. It can output 250...
This compact design forms a remotely operated switch that receives its control signal via the...
Although a hold feature is standard on most new phones, a lot of us still use the origional bell...
This circuit is designed to output both a sine wave and cosine wave. This particular design uses...
This logic probe can be selected to operate on TTL or CMOS logic levels, depending on switch S1....
This circuit is a toy to encourage young children to count. Power is turned on by switch S1, then...
To get the best from an NBTV signal it is important to use the full dynamic range of the signal...
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