3 Transistor Headphone Amplifier
Posted on Aug 30, 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 main objective of this system is to transmit message or text through ordinary Land Line...
Pulses from the distributor points are passed through a current limiting resistor, rectified, and...
The afterward account shows the electrical base affiliation diagram for Honda Motorcycle CB750F....
This circuit will energize and de-energize a relay at the push of a button. Any type of momentary...
A camera trigger to capture transient phenomena. I had a Mamiya ZE 35mm camera and Mamiyalite ZE...
The two circuits below illustrate generating low frequency sinewaves by shifting the phase of the...
The humidifier circuit is based on a special humidity sensor Type NH-3 from Figaro. Depending on...
This circuit controls resistive and inductive loads up to 2, 500W. Its main functional device is...
The TTY and the detector-transmitter unit are connected to separate phone jacks on the same line....
Following a power interruption, all relays assume their previous state before the power...
This is a universal four-digit keypad-operated switch - with a difference. Instead of entering...
Elliot vented 2A3PP line, is also very simple, the key is the quality of the output of cattle....
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