Expanded scale meter
Posted on Feb 23, 2013
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 digital volume control has no pot to wear out and introduces almost no noise in the circuit....
The series of light switches this time slightly different from the stress of work. The series of...
the decision of designing a 9V powered Headphone Amplifier was finally taken. The main...
This timer circuit can be used to switch OFF a particular device after around 35 minutes. The...
The Passive tone control circuit be the circuit fines the bass that has no the expansion but will...
The UBA is limited to discharging up to 2. 5A per channel. This discharge rate is adequate for...
Circuit works: an integrated circuit lC (NE555) and R, RP, C3 substandard elements constituting...
Adjustment potentiometer RP, can change the over-voltage limit setting. If the DC power supply...
Capacitive measuring instrument, b is the direct reading instrument measuring the capacitance of...
DW10M de-excitation type switch is based on the DW10 automatic air circuit breaker on the...
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