Relay Switching Circuits
Posted on Feb 5, 2014
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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 inspiration for the VCO in Figure 1 came from Texas Instruments application notes of years...
Tl and T2 are 600 to 8 ohm transformers (any transistor radio output transformers with 500 to 4...
The telephone-line decibel meter and line-voltage sensor shown lets you accurately monitor and...
The outputs from the comparators will swing, in sequence, from high to low as the input voltage...
Water is a precious resource in many parts of the world, and many people rely on water tanks to...
At89s51 microcontroller will be the main component controlling the process, and display different...
This is a circuit for laser door alarm is based on the interruption of Laser beam. A low cost...
This is a design circuit for tone/frequency detector (decoder) circuit that can be used to detect...
Here is a series of Touch Switch using only 3 transistors, this touch-based transistor switches...
A simple single-transistor Colpitts oscillator whose schematic is shown in figure 2. When a...
The LT3495/LT3495B/LT3495-1/LT3495B-1 are low noise boost converters with integrated power...
This National Radio Institute radio kit covers the AM broadcast band from 550 to 1700 KHz. The...
This project was on my list for a while. The main reason was that the winch on the Jeep is...
Because of this audio mixer, I can compare the various receivers just by twiddling the gain...
Circuit is shown. C1 is the input filter capacitor. VDz VD1 composition and primary clamp...
Circuit shown in Figure 3-99. The low start-up circuit to the motor ( shaped connection), then...
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