Adjustable filter provides lowpass response
Posted on Oct 15, 2012
Related Circuits
New Circuits
-
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.....
.
A Class A // Class AB amplifier rated 100 Watts when driving a 4 ohm loudspeaker. This circuit...
A circuit that offers visual indication of fluid level in a vessel, with a switchable audible...
There are several websites documenting the original Furby circuit board. I decided to replace...
A light dimmer, a 1 µf capacitor and a 12 V car ignition coil form the simple line powered HV...
When configured as a free-running multivibrator, a 555 timer provides no more than a 50% duty...
When a large number of channels are multiplexed, the outputs of two or more multiplexers can be...
This project provides the schematic and the parts list needed to construct a 3V FM Transmitter....
Bluetooth is an open wireless device technology standard for exchanging data over short distances...
This is a 5V to 12V DC-DC step-up (boost) converter circuitry that is especially ideal for the...
This is an implementation of the L298 to drive motors and inductive loads up to 4A continuously....
There is only one circuit breaker (no fuses) for the system. If you can follow the schematic, it...
A touch screen is an electronic visual display that can detect the presence and location of a...
The goal was to convert this radio for operation on the 70cm amateur radio band. This was...
A few time ago I decided to create a media center box to replace my DVD player, sattelite...
AC has been shown as a fishing converter input circuit ND conversion Tiger Road. In order to...
As shown in FIG, Vcc to the circuit is V power supply. After receiving the first signal...
Female textile machine power control circuit shown in a diagram, VTH1-VTH3 is TRIAC, R, and C is...
characters left: