20 & 30 Segment LED Voltmeters
Posted on Feb 7, 2014
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.....
.
1 kHz is a commonly used test frequency, and I resolved to see if I could make an inductance...
An Intersil 7101 31/2-digit A/D converter is used to display the duty cycle of a pulse train as...
In case the robot being on the black line, it will always go ahead, and in the case of out of...
During the distribution of the video some losses and distortion might occur to decrease the...
A power supply circuit to bring 24VAC down to 5VDC. I have an L7805CV, but rectified (a bridge)...
The purpose of the layout control mother board is to provide a simple way to allow people to...
When Q1 is active, a larger current begins to flow through L1 to GND. When Q1 is switched off,...
Under dry conditions, the transistor will have no bias current and be fully off. However as the...
This also Not a Cell phone jammer. Jamming a Cell phone is similar on its principle, but totally...
Nothing wrong at all with that setup IMO. I`ve an (older) Peltor FMT15 amp in my Golf. Works...
The dc output of the voltage multiplier ranges from 1000 volts to 30, 000 volts. The actual...
Have you ever in the dark watching time from the mobile phone In this case the bright and dark...
Air compressor (compressor) is commonly used in electrical equipment factory, generally...
Circuit principle is shown in FIG apparatus. When the night light irradiation on the...
Currently using stereo decoder IC itself because the manufacturing process can ensure separation...
characters left: