Electronic Doorbell Circuit
Posted on Feb 5, 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 unit delivers 0 to 20 volts at up to 4 amps in 0.1 volt increments. The entire device runs...
The pins RA3 to RA0, are used as outputs driving each column LED. The pins RB0 to RB7 are used as...
The use of a loop antenna of large size (12 18") provides a large signal pickup at AM broadcast...
April 2006 was the twentieth anniversary of the Chernobyl reactor accident. In the days following...
The following diagram is a very easy and simple electronic combination lock based on IC LS7220....
1993 VW Passat Engine Control Module, Automatic Control Unit, and Automatic Solenoid Electrical...
Here we show a little Theremin module which plugs onto a Arduino Board that gives out the tune to...
When designing bass reflex loudspeaker cabinets, it is necessary to measure the resonance of the...
I designed and built this stomp-box forGrammy-winning resophonic guitar player Stacy Phillips....
Abstract This Application Note describes PSoC device implementation of a BLDC (Brushless DC)...
This is another design generated at the request of my father. It is designed to be a dimmer for a...
This audio amplifier circuit is useful in classrooms to reduce the strain of lecturing, if the...
AC has been shown as a fishing converter input circuit ND conversion Tiger Road. In order to...
AN6610 Application Circuit It works briefly as follows: When the supply voltage vcc motor...
characters left: