Alcohol used to monitor gas concentration gas sensor circuit diagram
Posted on Mar 28, 2007
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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Beeps 7.5 seconds after a preset time Adjustable time settings: 15 s. 30 s. 1 min. 2 min. &...
The waveform of a steam whistle is a complex combination of white noise and an audio frequency...
The two neon bulbs will light when more than 100 V is across the ringing circuit. The bulbs...
A simple digital mixer, based on two dual-Schmitt triggers (4583B) and three exclusive-OR gates,...
Here the complete electrical circuit diagram of line follower robot which built based on...
The hobby circuit below uses an unusual method to generate about 12, 000 volts with about 5uA of...
Manual buzzers used for quiz competitions in schools and colleges create a lot of confusion in...
The goal of this project was to make an interactive baseball game inspired by pinball. There is a...
I used 45 peices of 220 ohm resisters to make 10k ohm variable resister. By banding the wire of...
With the preset at its max. the flashing rate of the LED is about 1/2 a second. It can be...
This subwoofer active filter circuit is a 24 dB octave filter with a Bessel character and cutoff...
This circuit regulates a DC power output. It has a very wide application range. It can be used to...
A couple of USB DACs but no one have I2S output. Some people doesn`t need S/PDIF input and they...
For the 2 layer board schematic, we`ll use 6 core IC`s: 4 74LS164`s and 2 555 Timers. The...
When a new computer modem enters the household, the demands on the home phone line skyrockets....
As illustrated, the 555 (or 556 1/2) and three resistive, capacitive element connected as shown,...
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