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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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A simple inventer and NAND gate can be connected to yield a highly compact and reliable digital...
The Stereo Power Meter is made up of two identical circuits and a power supply. Each circuit...
A four output Hall sensor combined with a few logic gates produce this digital compass. The NOR...
Micro PSU to power a breadboard with 5 volts. Connect to 9V battery, 12V or any other DC...
This circuit is a circuit diagram of ECM Mic Preamplifier. A microphone amplifier that can be...
What is mean logic-1 or logic-0 Logic-1 and logic-0 strongly connection between the state at one...
A dynamic microphone preamplifier can be realized using LM387 dual operational amplifier...
A pH electrode measures hydrogen ion (H+) activity and produces an electrical potential or...
After reading Robert`s article, I immediately wanted to build this project so I ordered an HMC...
This module is a "tribute" module, based on the awesome Steiner-Parker Synth VCF. Those who know...
On astable multivibrators, the duty cycle is usually fixed unless there`s a potentiometer in...
I n this circuit, the alarm will be switched on under the following four different conditions: 1....
A bridge rectifier "pack" is highly recommended over constructing a bridge rectifier circuit from...
This circuit uses the popular and easy to find LM3914 IC. This IC is very simple to drive, needs...
The 555 timer will put out positive pulses. The pulse width is inversely proportional to the...
Repair a Samsung SCR-3000 DVR COMBO for my security system. I`ve replaced 3 capacitors which were...
Incredible Shruthi-1 hardware synth with its excellent SMR-4 MkII filter board, both of which I...
As shown by the 12kHz 12kHz IF oscillator quartz oscillator, the output level adjustment,...
As shown in Figure as a switching power supply to work with linear regulated power supply. Its...
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