Tone ringer
Posted on Nov 24, 2012
New Circuits
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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.....
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Use your Symbian OS mobiles to control devices through Bluetooth. The serial to Bluetooth...
Two conventional amplifier stages built with SF215 transistors are linked by ceramic 10.7MHz IF...
The circuit can be used to simulate large capacitances using small value components. With the...
With the component values shown, the oscillator has a frequency of 8 kHz. When an input signal is...
Glitch has been a universal slang expression among electronics people for an unwanted transient...
So far in this series we`ve had a diverse look at how Arduino can interact with a range of...
This circuit will light a lamp at a remote location when the doorbell switch is pressed. This...
The STI7167 uses state-of-the-art process technology to provide a fully featured HD AVC DVB-C and...
To this small FM transmitter to change the mic for an audio jack so I can plug it into my mp3...
Drive a blue or white LED from a low voltage. Normally, if you want to light up a blue or white...
Is the battery empty, or is there something wrong with the device That`s always a difficult...
The battery charger pictured here is a real beast. It will dump 60 amps into a 12 volt battery...
The Motorola MC145158 is a dual-modulus, serial-input PLL frequency synthesizer which is commonly...
Includes direct-coupled preamplifier and driver stages, with considerable d-c feedback to...
RT9179CB use power management chip power supply circuit Shown the way for the introduction of...
Agriculture and electrical power harrow plow power cord must be used four rubber cable, wherein a...
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