Dc Motor-Speed Control
Posted on Feb 1, 2013
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 inverter is very easy to construct, reliable, and even powerful enough to light up a 15W...
Press SI. The 100 µF electrolytic capacitor rapidly charges up at about 0 V. The transistor will...
This circuit was designed for use in a hifi showroom, where a choice of speakers could be...
Well, it took some time and a few failed attempt, but here it is. A neat project that lets you...
This project implements a network connected water level sensor, measuring the level in the sump...
Schematic Diagram is a layout of symbols and and connection of every electronic components...
This is a similar circuit to the above and provides a 4 LED bar graph indicating the voltage of a...
Light Switch With Relay is a series of electronic switches that are controlled by a series of...
This circuit was designed to not fry the 555 timer, this is because I noticed that having the...
This meter circuit uses just one IC and a very few number of external components. It displays the...
This is a vocational training report on Ultrasonic Proximity Detector undertaken under at Bharat...
A simple buzzer to convert to an oscillating buzzer so as to obtain the sound similar to that of...
All errors in circuit diagrams, documents and layout are corrected. The circuit as shown below is...
If you had time to experiment with the ALF type SE circuit you may have discovered some of its...
4000 Series 4011B is (NAND gate) by the 4AI NAND gate circuit group to form two loops unstable...
Coop automatic controller described in this case, capable of sheds light, temperature and...
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