mains voltage detector
Posted on Feb 7, 2014
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 version sports a 2nd audio amplifier stage at Q3. The output level with this version is...
This unit uses one TSAL6100 IR/LED emitter from Digi-Key. This IR diode has a narrow (10 degree)...
The blinking or flashing rate is determined by Ul, a 555 timer integrated circuit. Its output, at...
This circuit has an overall gain of 320. More gain can easily be obtained by lowering the value...
This touch-actuated switch stays on as long as you keep your finger on the touch plate. Rl sets...
This is a circuit diagram of a simple circuit in which the LED burning can be activated only by a...
Voice Electric (FC52) is converted to electrical signals. FC52 at cost benefits of high glucose...
The consumer unit (or electricity meter`) cupboard in some older houses is a badly lit place. If...
Many a times one needs an ex- tra telephone ringer in an ad- joining room to know if there is an...
A power filter is a device you put ahead of something like a GPS and MP3 player and or radar...
Many enthusiasts will be using their PCs as data loggers, controllers or as web servers. ln these...
The light sources for mirror screws based on my work, consist of a dozen or more of high...
Circuit principle: This circuit uses three-terminal adjustable integrated voltage regulator, S...
characters left: