Tone ringer II
Posted on Sep 25, 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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The timer can be used wherever time periods of up to seven minutes duration are needed. To turn...
The frequency range of this amplifier is 1.8 to 54 MHz. The amount of RF drive required for full...
Surround Sound Decoder circuit diagram. The circuit`s operation starts as the stereo sound signal...
The circuit is here as it is of high educational value. I have not tested it. You can `simulate...
The count advances as the clock input becomes high (on the rising-edge). Each output Q0-Q9 goes...
Here is a simple circuit for a one transistor Audion type radio powered by a 1. 5 V battery. It...
FET has a very high input impedance (100 Mega ohm in case of JFETs and 104 to 109 Mega Ohm in...
The circuit given here is of a regulated dual power supply that provides +12V and -12V from the...
This particular model speaks in a pleasant female voice at the touch of a button, and if you need...
Ignore components C1, C2, R3. The MOSFET, Q1, switches on creating a short circuit between the...
Voltage-controlled oscillator (VCO) is an oscillator that its frequency is controlled using a...
This is a two-zone alarm - with automatic exit, entry and siren cut-off timers. It can be...
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