High sensitivity alarm
Posted on Mar 28, 2007
Related Circuits
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.....
.
This circuit has been designed to alert the vehicle driver that he has reached the maximum fixed...
There are a lot of alarm systems on the market but you might be inclined to build your own. This...
Design a lighting circuit for an indoor garden, and I`m not understanding things that seem like...
Detecting colour of an object can be an interesting and useful electronic application. It can be...
Try the 2N388A transistors as they are dirt cheap (18 cents when bought in lots of 5 or more I...
This circuit has been designed to provide a clearly visible light, formed by 13 high efficiency...
I have an 01 Civic EX. A/c blew very cold. On a hot day ran into a store, came out to start the...
A 1991 350SDL that has the center vent not blowing air issue. However, When I get on it and the...
The video-mixer no longer requires a supply voltage. This supply voltage could introduce moire...
This circuit can be used from low frequencies to at least 120MHz using series resonant crystals...
This circuit`s frequency of oscillation increases directly with light intensity. The greater the...
characters left: