library 555
Posted on Feb 7, 2014
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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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With this circuit you can mix four separate audio inputs. Each input will accept high or low...
The intended use of the 24 volts is to power an amplifier that will supply wave forms of up to a...
The heart of the electroscope is the two junction FETs Ql and Q2 connected in a balanced-bridge...
The monitor is a simple voltage comparator in which a car battery serves as the battery for...
The laser diode ·pulser is a simple drive circuit capable of driving the laser diode with 10-A,...
Diagram below shows a simplified diagram of the main peripherals present in the 89S52 or 8052 /...
Figure 1 is a schematic of such an arrangement with four batteries. The diagram in Figure 2 uses...
A continuity tester is handy for checking that there is a conducting path between two points. The...
This be Simple Doubler Voltage circuit, from voltage 12VDC to be 24VDC. By use Timer IC highly...
The following plans describe how to build a very small tracking transmitter that can be tracked...
Even though today`s electrical appliances are increasingly often self-powered, especially the...
Cars are fixed as shown in the circuit composed of LM723 regulator circuit, it can replace the...
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