The same capacitance parameters easy to change the cutoff frequency of the low pass filter 24dB-oct
Posted on Nov 10, 2015
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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In battery-powered applications in which power management is key, a microprocessor may adjust its...
This Project is used to control a single phase Motor from any where in the world through the...
When the power is connected to the circuit by turning on SW2, RELAY1 get energized for the time...
This circuit, can deliver 3 A or more and a maximum dc voltage ol` a little over 20 V. It is...
The circuit detects a sudden shadow falling on the light-sensor and sounds the bleeper when this...
The series of UC 3842, 3843, 3844 and 3845 Oscillators can be used to generate sync pulses which...
As you can see, the audio ground completely isolated from digital ground. And I`m using top...
This circuit was developed by Luigi Falcone, I1FLC. He uses seven plug in coils covering 3. 0 to...
The RF amplifier is similar to the one used in the 2. 5MHz amplifier. At a frequency of 10MHz the...
The goal of such a machine (called an electrocardiograph, or ECG ) is to amplify, measure, and...
As shown in the circuit to light when the intensity 700lx above action, this time through the
220V AC by Rl and R2 partial pressure, VD half-wave rectifier, the capacitor C in the left ends...
8 ohm output for connecting communication receivers and 8 ohm speaker or low impedance phones,...
A single power amplifier circuit LM2876 crrL constituted. VTf external transistor to form the...
As shown by a diode temperature sensor 3-digit thermometer, 3 digits the A/D converter and...
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