Repository-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.....
A little board with most of Microchip kit, but less parts then all these boards. Only the basic...
The 555 is wired as an astable and the capacitor is charged only through the 4,7Kohm trimmer...
This is the circuit of LED color fade effect. Just like the name of the circuit, the light...
All of our electronic circuits were originally constructed on breadboards. Once the circuits were...
The circuit in Figure 1 is that of a 4-bit asynchronous counter, also known as a `ripple...
This circuit is use to Digital Radar Speedometer. It allows us to evaluate the speed of any...
A circuit that can be used to flash two Christmas stars alternatively is given here. The IC1 NE...
The Wien-bridge sine-wave oscillator uses a light bulb to stabilize its amplitude. The circuit in...
The HANDI-Finder ® is a HANdheld DIrection Finder which can be used to localize both AM and FM...
M1 is a stepper taken from an old disk drive. There are five pins, i. e. , common, coil 1, 2, 3...
A regenerative radio receiver is unsurpassed in comparable simplicity, weak signal reception,...
Shown automatic power-protection circuit. This protection consists of step-down rectifier...
Capacitive circuit duty cycle is very low, in the range of 1-10%. When the current is only 50mA,...