Combustible gas alarm circuit diagram 7812 7805 555
Posted on Mar 28, 2007
New Circuits
-
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 diac is used in the gate circuit to provide work for the signal being applied to the gate. R1 a...
The ROMs or PROMs must have the correct code for converting the data from the NE5037 -used as...
The LM1812 is a complete ultrasonic transceiver on a chip designed for use in a variety of...
Water is a precious resource in many parts of the world, and many people rely on water tanks to...
FM tracer was prepared using the LM3909 IC and some supporting components. 1. 5V FM trackers This...
Build as simple a circuit as possible that will pull a logic line low every time an automotive...
Using analog audio line delay, you can adjust your room virtually. Just turn a knob in your audio...
Here is a simple circuit based on two transistors that can be used to control the speed of a 12 V...
This application note describes the operation and features of the FAN7601. This device is a...
This is the circuit that sparked off all the other Link Telephone Intercom designs. Originally...
It use the three transistor (2SC945, or 2C1815 or 2SC828) is main Which typical transistor...
At first glance this circuit looks fairly complex, but when broken down, can be divided into high...
One Foot Spot Welder circuit The circuit uses IC CD4541 A precise delay characteristics, to...
In the laser tube drive circuit are often provided with a photodiode, which generates a laser...
As shown, the proximity switch 555 as the core component monostable trigger circuit. 555 Trigger...
characters left: