Stereo VU Meter
Posted on Jun 3, 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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This circuit is intended for children fun, and can be installed on bicycles, battery powered cars...
The signal from a synchro receiver or a variable resistive cam follower (potentiometer) is...
By repetitively charging and discharging a capacitor through the primary of an induction coil...
This circuit uses LEDs to display the beat frequency of two-tone oscillators. Only one LED is on...
This amplifier utilizes a 2N6367 and a pair of 2N6368 transistors. The 2N6367 transistor is...
Ql is a phototransistor that is normally illuminated by a beam of light. When the beam is...
This is a Constant Current Source LED Driver, When the LED driver Upper-NPN is driven by a...
Charging any type of chargeable battery can be critical and involves some attention to be paid....
USB HID is a specification that includes things like mouse and keyboard. has a GPL based driver...
This handy circuit can be used to charge from one to 12 NiCd cells from a car battery. Up to six...
Here is a simple 1KHz audio distortion meter that can measure the Total Harmonic Distortion (THD)...
This is a simple and low cost wide band VHF field strength meter. The field strength is measured...
In the picture above, Oscium`s iMSO-104 oscilloscope is measuring the output waveform of an...
This sawtooth wave generator gives not only the sweep signal at out 1, but also a synchronization...
(This circuit first appeared in "The Braille Technical Press", edited by Robert W. Gunderson, in...
Circuit shown in Figure 3-27. Jog feature is available for fine adjustment of moving parts....
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