Bedside lamp gates as delay circuit
Posted on Mar 28, 2007
New Circuits
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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 circuit is intended to provide good square waves converting a sine wave picked-up from an...
The human speech apprehend a small area of frequencies, that is extended from 300HZ until 3KHZ....
Amplifying and limiting of the AM carrier is accomplished by the if gain block providing 55 dB of...
this is a rather common cookbook circuit that you can find in books and on the net, yet...
Widely available AA NiMH battery chargers are in the market, even those already in a single...
Below 10 MHz, the realization of engineering models is fairly straightforward and not critically...
This is a figure for a block diagram of a modern automated systems incorporate closed-loop...
The TEA1069 and TEA1069A contain all the functions needed to build a highly featured,...
Most ohmmeters of the design shown in the previous section utilize a battery of relatively low...
This project uses the similar technique to these products, however it can write a continuous...
This chapter contains the description of a simple development board for the study of the 8051...
This is a Sony Triniton, Model KV-20M10, manufactured July 1995. There are no blinking lights...
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