Battery-Saving Disconnect Switch
Posted on Feb 20, 2013
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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The supply voltage should be about +/- 35 Volts at full load, which will let this little guy...
A positive-going trigger pulse can be used to start the timing cycle with the circuit shown. In...
First of all, download any version of arduino software ( new version is better) using the link...
On the bottom you will see a 74AC125 which is a Quad Buffer with Tri-State Outputs. I`ve seen...
When we said to Noise signal in an audio system. everyone not likes it, wants to get rid of it...
Here we show you how to hack a TV-B-Gone into the case of a vintage television remote control,...
Here`s a dual-band Regen that came from some encouraging emails from Jerry (K9UT) and another...
An illustration of the electronic impedances of a solid-state nanopore chip. (b) Simplified...
Light-emitting diodes can be used DC, AC and pulse and other drivers, resistance typical buck LED...
As shown, the circuit uses type J RTD, its resistance value corresponds to the temperature of...
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