Temperature controller
Posted on Feb 27, 2013
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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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CodeLock AVR electronic combination lock is realised with Atmel AVR microcontroller AT90S2313 or...
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After one has built a QRP transmitter, it would be interesting to know the exact amount of output...
There is no PCB since there are no components to mount on one. the object was to create a source...
The amplifier provides 10 dB of gain from 10-600 MHz and has a 1-to-l match at 50 ohms. The BFR91...
The functional generator is a device that would have any better equipped electronic lab should...
High frequency waveform generator is very useful in electronic experiment and design. This...
A suitable method to sense when some LEDs in my Garage Door Opener are on. A power source...
This is a project I`ve done on behalf of a person on an internet forum. The requested operation...
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Charging a Small NiMh Battery has devised an ingenious way of collecting energy from the air and...
This design adopts a well established circuit topology for the power amplifier, using a...
The carbon dioxide (CO2) laser is the powerhouse for high tech industrial cutting and welding of...
This article provides conversion instructions for radio model # GE/MACOM MASTR-III Group 2 (150....
A delay circuit using an operational amplifier It uses an operational amplifier A as a...
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