Digital sound and light control stairs delay switching 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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This design adopts a well established circuit topology for the power amplifier, using a...
The reader mechanism shown was purchased from All Electronics for $1.50. The unit provides the...
Diagram shows a 50MHz oscillator operating on a third harmonic. The collector"s load resistor R1...
This receiver uses the NE5212, the Signetics 10116 ECL line receiver, and the Phillips/Amperex...
The pull-up transistor of the totem-pole output is used-to turn on the LED and the pull-down...
The two-pole, five-position switch, coils and 365-pF variable capacitor cover a range from 1.5 to...
The timed two-voltage circuit can start and run a small de motor or solenoid. The input voltage...
This is the 200W lamp flasher circuit diagram. The frequency/speed of the lamp flashing can be...
We all know pretty well about solar panels and their functions. The basic functions of these...
The post explains a simple delay ON circuit which allows the connected load at the output to be...
This article is copied from replica sites to here in order to have a local and long living copy...
The 555 Ic is wired as an astable and the frequency is constant and independent of the duty...
For proper operation, circuit ground must be connected via a small value, high voltage-rating...
MC1411 series of Darlington Drive current internal structure Darlington current drive has a...
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