Four channel synthesizer
Posted on Jul 5, 2012
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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 circuit can be used to tell whether or not an input signal is within a certain frequency...
Filtered 15 V de is applied to a series circuit consisting of thermistor R2 and parallel...
This circuit uses a positive-feedback loop closed around~a combined comparator and integrator....
This circuit has an overall gain of 320. More gain can easily be obtained by lowering the value...
· This circuit is used for analog signal selection or time division multiplexing. As shown, the...
I wanted to do some time lapse photography where the camera would take 1 capture every 20 minutes...
This is the circuit diagram of audio/video modulator. The circuit will convert an audio and video...
LM4880 is HiFi dual audio amplifier IC from National Semiconductors. This IC is specifically...
In some cases of temperature measurements, it is more advantageous to convert the measured value...
Following the same idea as the Chipstein and Cornell designs, the circuit uses an instrumentation...
The 900 Hz tone is generated with an LC-oscillator. The "L" part of the "LC" is provided by the...
The circuitry for the tone detector, solenoid driver, and motor speed control (paper transport...
As shown below, this circuit uses BP01-type pressure sensor and op amp MAX4472.BP01 type...
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