Biquad-audio-filter
Posted on Oct 19, 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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Here`s how you can make an electronic speed controler (ESC) for your remote control car, boat or...
Many people experienced sleeping well in natural surroundings, into a tent or a wooden hut. This...
R2_47R 1/4W Resistor D1_LED (Any dimension, shape and color) Q1_Infra-red Photo Transistor (Any...
First and foremost, if you are not handy with tools and electrical systems, please. hire an...
Interested in starting an intro electronics project using a IR sensor and am having a little...
A portable USB hard drive is a great way to back up data but what if your USB ports are unable to...
In contrast, a piezoelectric sounder (self drive type) consists of only a piezoelectric diaphragm...
This is the sequence timer diagram composed by NE555. The timer can set time any time when the...
In order to programm devices which run at 3. 3V (either SPI-based ones like AVRs or JTAG-based...
32kHz clock oscillator transistor Tun digital path, the clock circuit is indispensable, as shown...
Currently, high-quality communications receiver in the use of diode ring mixers and mixer by a...
8-channel temperature shown detection circuit, it can be 8 temperature detection.. {D581 is 10....
After the SCM execution, Pl output port to bidirectional input 74LS245 driver chips, the same...
As shown for the TDA4863J basic application circuit. When the positive supply voltage VP, VF...
Camera power supply circuit Shows the camera power supply circuit, the normal power supply in...
This transmitter, as shown in the drawing, consists of a 6V6 as an oscillator, then the signal...
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