Cassette Motor Speed Calibrator
Posted on Jun 30, 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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This current source has continuous control of the magnitude and polarity of its amplifier gain...
Originally I was going to call this posting "Crystal Oscillator Blues". This is given because...
protection against reverse voltage. The 10mfd provides additional DC filtering. The CD4007 is...
This is a simple 12VDC to 220AC inverter circuit that can be used produces an AC output at line...
These require power to work. Sometimes, that`s a battery you put into the mic. Sometimes it`s a...
This is an 250mW RF power amplifier project. This circuit is designed to amplify the output of...
This is a very interesting project with many practical applications in security and alarm systems...
A long time ago when telephones were so simple almost nothing could go amiss from an electrical...
The figure shows the schematic of the circuit. A number of unique features give this design its...
Making 90 degree phase shift on VHF. This IQ Oscillator is easy way with two logic IC`s. 74AC04...
A sense of three-point oscillator, also known as Hartley oscillator, the Colpitts oscillator with...
As shown for the high-speed parallel current drive circuit. Input signal Vin have been added 180...
As shown in FIG inverted to adopt IC1MAX868 and CMPSH-3S consisting of four times the pressure...
Many times a small amplifier is needed to meet the needs of small spaces. This amplifier can be...
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