Alternately flashing one of a plurality of sets of high-power lights a chain circuit
Posted on Mar 28, 2007
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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 driver circuit (see the complete schematic) has 4 main sections: * the voltage...
Very simple and useful circuit for amplify the stereo signals .The circuit dissipates roughly 28...
This mini audio amplifier will test the audio stages in amplifiers such as the front end of FM...
This design is for an external signal strength meter that is analog, digital, and audible for...
This circuit uses a dc amplifier (324) in a bar-graph circuit that uses an LM339 Quad comparator...
Most darkness activated alarms employ opamps and some logic ICs. Here, a less expensive approach...
This is VERY illegal. As a consumer, you MUST comply with part 15 of the rules and regulations....
The ISL88731 is a highly integrated Lithium-ion battery charger controller, programmable over the...
The objective of this controller project is to have automatic block and switch control of five...
It is said that the mice are more sensitive to electromagnetic fields, which is why the...
Motor is heating devices, by accident or overload often caused when the coil winding temperature...
As shown by 555 and the timing resistor R1 ~ R3 and measured capacitance Cx can be composed...
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