As the market strives for lighter, more compact wireless and portable devices with more ingenious features crammed into an ever-tighter space, a related quest ensues for the next power supply innovation ” a powerful, compact, long-lasting, economical and safe battery. Although progressing toward this end, current battery technology often comprom
Click here to download the full size of the above Circuit.
ises the desired space and weight specifications without properly satisfying peak power requirements. Ultracapacitors, also known as supercapacitors, offer an alternative source that promises to circumvent the battery scramble and extract greater efficiency from existing power sources. Because of high price and manufacturability issues, this electric double layer capacitor (EDLC), also known as a pseudo capacitor, isn`t popular among engineers. However, it offers boundless growth potential because it responds to key market and societal needs: It`s environmentally friendly, helps conserve energy, and enhances the performance and portability of consumer devices. Ultracapacitors also are free from characteristic battery problems, such as limited cycle life, cold intolerance and critical charging rates. Ultracapacitors are being developed as an alternative to pulse batteries. To be an attractive alternative, ultracapacitors must have at least one order of magnitude higher power and a much longer shelf and cycle life than batteries. Ultracapacitors have much lower energy density than batteries, and their low-energy density is, in most cases, the factor that determines the feasibility of their use in a particular high-power application. Available for decades, a conventional electrolytic capacitor is an energy-storage device that can be compared to a container that gradually fills with electrical energy and then delivers it when...
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.....
characters left: