Signal-injector
Posted on Jun 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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The signal starts at a low frequency, rises for about 1.15 seconds to a high frequency, ceases...
A voltage-variable capacitance tuning diode is placed in series with the crystal feedback path....
The circuit on this page is for a visible and infrared light detector circuitboard that has 8...
A simple NiCd charger can be built using junk box` components and an inexpensive LM317 or 78xx...
The circuit diagram shows a timer 555 based rain sound generator. The circuit requires a 9V dc...
This circuit is very similar with a car radio controlled toy with seven control functions:...
This ion detector circuit detects static charges and free ions in the air. This ion detector...
Upper traces show voltages VOUT, lower traces show transients. Frequency transition at 500 us....
The objective of this project is to make a controller based model to count number of persons...
When the input goes from low to high, a narrow positive pulse is generated at point A. This pulse...
I like to post some thoughts on some of the functions of the Great Pyramid of Egypt. It's been...
Automatic cycle switch circuit 2 It uses 555 IC as the control element} A capacitive step-down...
Charging the battery using a slow manner (charging current, long time) is the most economical...
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