Universal-motor speed control
Posted on Nov 24, 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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I used the original board layout shown in the magazine article as well as the original driver...
This circuit can detect smoke and a number of gases (CO, CO2, methane, coal gas and others) with...
A simple inventer and NAND gate can be connected to yield a highly compact and reliable digital...
The on-off-type DC/ DC converter has two kinds of operating modes: One kind keeps the switch duty...
This circuit was devised to switch power to a Peltier cooler in a vehicle. Power to the load from...
This circuit uses standard components and shows a method of indicating the fuse status of mains...
Previously I used a linear regulator, now I use Max756 ( ) boost converter. I`m seeing 0. 1 - 0....
Using TOP269EG off-line switcher IC, (U1), in a flyback configuration can be designed a very...
Each power supply, whether linear or switcher, uses at least two operating modes that...
This circuit is a wireless car alarm system that is built using two circuit modules, namely...
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