Simple quality-oriented PA 02
Posted on Dec 11, 2010
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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Built around a single 8038 waveform generator IC, this circuit produces sine, square or triangle...
The receiver chip uses a Panasonic 4602 38KHz receiver and that's it for external components. It...
This circuit provides a simple means of obtaining phase shifts between zero and 170°. The...
It is usually desirable to have the remote transmitter of a 4 to 20 mA current loop system...
A front-end circuit has been developed for the D0 upgrade for reading out visible light photon...
This is a circuit about PLL system that can be used to implement an FM demodulator. Since the VCO...
If you want to do the ground loop elimination in audio path, you have to cut the galvanic...
With the following circuit you can easily program the AVR microcontrollers AT90S1200, AT90S2313...
This project has been developed together with some other OMs (in particular Marco IW1DGG) in our...
A simple stereo tv decoder circuit build with MC1310P. Transistor Q1 is an audio amplifier and U1...
I need one to put in between my headphones and my metal detector. I don`t need anything fancy,...
Here is the circuit diagram of a guitar preamplifier that would accept any standard guitar...
By gluing a standoff to the center of the cone, an inexpensive 2", 8 ohm speaker becomes a...
This circuit controls a small, four-phase, five-wire, unipolar stepper motor, commonly designated...
The Shay is equipped with flickering ashpan and firebox lights. These are simulated with LEDs....
The diagrams below detail the development of a simple modular radio receiver based entirely on...
3-wire interface to the AD7714 can be equipped with a variety of microcontrollers (including...
4013 pairs of D-type flip-flop in the astable multivibrator is used as a binary divider output,...
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