Proximity-sensor
Posted on Oct 30, 2012
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 is not a novelty, but it proved so useful, simple and cheap that it is worth...
Most audio amplifier systems must have preamplifiers with many different characteristics. These...
Creating projects that connect to the phone line can be a real chore without some device like...
This circuit was formed to create a wireless alarm from a normal magnetic contact. By fixing the...
This battery saver circuit can automatically turn off a small piece of test equipment after a...
There are still neighbors that keep annoying you by having loud the TV or the radio? Well I have...
This inverter circuit works with a transistor and transformer and other components to increase...
This is a two-zone alarm - with automatic exit, entry and siren cut-off timers. It can be...
This is an actual reverse engineered circuit diagram of the one transistor circuit most commonly...
This is another design generated at the request of my father. It is designed to be a dimmer for a...
This article describes a 2 meter amplifier capable of running 25-30 watts output. More than 35...
Although there are significant variations between different implementations of the...
I have been getting a lot of emails about this project. Most of them are because of the bad...
Even with the controls in the highest position there will always be some signal leakage, and...
The heart of the circuit is the two transistor flasher with frequency modulation applied to the...
Considering that I had complained of a schematic typo from Siliconix, it is doubly embarrassing...
The excitation device for light duty synchronous motor 625kW initiated. Triggering the device...
characters left: