Digital-touch-on-off-switch
Posted on Oct 18, 2012
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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Many times we needed to strengthen a small signal in the region of VHF or FM. The preamplifier...
A high signal-to-noise ratio is important in signal construction and combination. The HA-5147...
This alarm circuit activates when SI through S5 are activated. This lights LED1 and activates Ql...
The rectifier input is tied to the input. This makes gain inversely proportional to input level...
The TINAH board shield, a printed circuit-board shield designed and built for Phys253 and first...
The water sensor circuit is based on a 555 timer circuit and come common electronic components....
Circuit and assembly process of the line stage in two separate articles. The linestage shares the...
This circuit generates inaudible ultrasound to make a barrier across the entry. At the moment the...
UM95088 telephone circuit diagram is shown in the above picture. UM95088 is specialized...
The power that is used for realignment is a loss as far as the rest of the circuit is concerned....
As shown, the circuit consists of a dual time base circuit 556 consisting of two synchronized...
The best human ear can capture sounds from 20Hz to 20KHz. These limits are known to be the...
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