Dc Millivoltmeter
Posted on Sep 12, 2012
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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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Simple frequency limit detectors providing a GO/NO-GO output for use with varying amplitude input...
When an asterisk * is pressed on the touch-tone phone, TCI a DTMF decoder, controls on-hold...
The fan runs constantly in many PCs, which may not even be necessary. A simple controller circuit...
Simple digital frequency meter has many applications. It may be an experiment for beginners,...
The circuits on this page are basic designs for "Diode Matrix" switch machine control systems...
This is the first color, graphic LCD display I worked with. I made some assumptions when I first...
The chips include an ATmega88 as the main controller, an AD9280 ADC, an LM6134 high-speed quad...
The transmitter function is to modulate the original signal frequency of the signal carrying the...
Stepper motors are available in several versions and sizes with a variety of operating voltages....
A type of output structure used with integrated circuits in which one transistor drives the...
An LED is an electronic component or semiconductor to be more precise. This means that it is...
As shown, the switching circuit comprises a buck rectifier circuit, the bistable trigger circuit...
As shown for the bridge circuit excitation voltage XTR108. Circuit for the bridge excitation...
As shown for the long timer circuit. This circuit uses an operational amplifier CA3094...
As shown in FIG as a special power supply circuit. The circuit is simple, but can be produced...
The simplicity of this transmitter compared to its very high performance makes it very...
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