USB Single Cell Charger
Posted on Nov 10, 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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This is a power generating method from sunlight.This method of power generation is simple and is...
The diac is a common component used to trigger triacs. The construction of a diac is similar to...
This is a schematic for radio receiver circuit. This circuit is based on the TDA7088T that can be...
FM radio antena amplifier circuit diagram. This amplifier will pull in all distant FM stations...
Audio frequency-shift keying (AFSK) is a modulation technique by which digital data is...
Are you familiar with the basics and applications of the 555 timer IC Are you looking for a book...
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The HID ballast circuit includes (Figure 1) a buck stage for controlling lamp current and power,...
I designed the PC Power-on Combination Lock (PCPCL) last year for my GCSE Systems & Control...
The schematic for this project is not terribly complex, however it is very important that you...
The second method is to record (realtime) the actual bark in an analog CCD delay line (~100 msec...
Is a good touch-down can delay the lamp, the circuit is characterized by: the static power...
Intelligent humidity meter circuit by the HM1500 / 1520 humidity sensor and MCU configuration...
Electronic Table (1) Introduction This schematic circuit having two alarm output by the timer by...
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