Car active subwoofer
Posted on Mar 28, 2007
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 is a simple display controller. It can be controlled with a small microcontroller, such as...
The circuit is an open loop rms voltage regulator that will provide 500 watts of power at 90 V...
This converter enables reception of 800 to 1000 MHz on any scanner covering the 400 to 500-MHz...
This UHF wideband signal amplifier has a total gain of 10 to 15 dB in the 400 - 850 MHz domain...
A radio camera on a model railway should transmit constantly while the train is moving and...
I`ve found some interesting schematic of Load Cell amplifier. As we know, load cell amplifier is...
This is probably the simplest radio transmitter that you will find anywhere. It has a total of...
Fairly early on in my work with high-power LEDs such the Luxeon 1 and 3 watt devices I considered...
There is now no need for a separate camera and recorder - for less money you can buy an...
How often does it happen that you close down Windows and then forget to turn off the computer...
Later in the sixties, the first distortion effect boxes were made to simulate the sound of...
The design is based loosely on some ideas from K8CU and AG6K. However, I have simplified the...
The schematic for the board can be seen below. The three main elements of the board are (1) the...
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