Higher Order Filters
Posted on Feb 5, 2014
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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 circuit is a modified Colpitts oscillator, tuned with MV209 varactor diodes. The resonating...
This project was a particular surprise for me in that the BC547 (equiv 2N2222) can be used to...
This CW transmitter has an output of up to 3 W. By using 24 V on Q2, up to 10 W output can be...
This Low Dropout Voltage (LDO) solar charge controller uses a simple differential amplifier and...
The programmable power supply is the association of one of the integrated test system of guided...
When USB present and device needs to work, VSupply is directly provided by the USB and PMOS...
The amplifier feeds a brace of speakers with two LM3876 amplifier chip circuits (50 watts per...
This simple and cheap circuit is not just for Christmas! There are just two resistors, a...
This is a very good integrated circuit. There is no need for any external glue logic to drive the...
This 4 1/2-digit DVM circuit is built around a Maxim ICL7129ACPL A/D converter and LCD driver. An...
A single power amplifier circuit LM2876 crrL constituted. VTf external transistor to form the...
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