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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The circuit shows a simplex fiber link between the NE5080 transmitter and the NE5081 receiver....
Here`s a project that could be useful this summer on the beach, to stop anyone touching your...
IC TDA7052 is a mono output amplifier in 8-comng Head DI package (DIP). The device is designed...
The MAX2605, MAX2609 are compact, high performance intermediate frequency (IF) voltage-controlled...
Here is a simple circuit that can be used to check the sound levels. The sound pressure meter is...
This device is used as a reminder to take medicine every day. This device actually contains a...
VOX is a switch ordered by voice, often used at microphones instead of the classic switch button....
Although a distribution amplifier may accept different input channels and output those to...
The wiring diagram for the clock and radio screen illumination for a 1999 mercury sable with a 3....
The XLR or Cannon-type connector is clearly a better audio connector than a 6. 5mm jack plug and...
This is a 1-amp variable-voltage PSU. It adjusts from about 3v to 24v: and has the added feature...
220V AC by VDI ~ VD4 bridge rectifier, lights the way for Hl, H2 electricity, another pass Rl, R2...
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