Bar-graph indicator for ac signals
Posted on Oct 24, 2012
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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 has been designed to accommodate all those who dedicate many hours of their lives by...
This limiter improves signal-to-noise ratio. It is connected between the detector output and the...
When someone touches the touchplate (TP), the resistance of his finger across points A and is...
This linear post regulator provides 12 V at 3 A. It employs TL431 reference Ul which, without...
IR radiation from LED2 (modulated by a 1-kHz wave) is keyed by Ul, and Ql is radiated. Reflected...
To apperceive whether it is freezing you alone charge to admeasurement the temperature. This has...
The heatsink on the triac is a bit unclear for me. I`ve calculated a maximum value of 10C/W, is...
Control a current through several current-mirror device (specifically the IREF pin on the TLC5940...
A photo or slightly activated relay normally open relay in the closed circuit / contact with the...
In contrast to an ordinary voltmeter, the input of an oscilloscope generally has one side (GND)...
In this arrange ment a high value inductor or choke L is connected in series with the rectifier...
The model 4017 integrated circuit is a CMOS counter with ten output terminals. One of these ten...
Following in the footsteps of the "primitive" but quite successful 4 pin OM802 timer IC...
32.FM radio circuit ; FM radio tuning circuit circuit (2) FET circuit in FM radio application...
Circuit is shown. It includes the TC620 temperature control circuit, the temperature indicator...
Dual power automatic recovery means one power supply, one power standby when the power supply...
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