Miniature DC Motor Speed Control circuit
Posted on Mar 28, 2007
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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 EAGLE Layout Editor is an easy to use, yet powerful tool for designing printed circuit boards...
Sound detected by electret microphone MIC1 is fed to IC1"s input through resistor R2, and...
This RS-232 type line receiver to drive CMOS logic uses a Schmitt-trigger feedback network to...
If R, the sensor matching resistor, is equal to the "dark" resistance of the cadmium sulfide...
The range of this transmitter is about 50 feet with a short whip antenna. The tone generator, is...
This protection circuit is inserted between the reset switch and the motherboard. The earth...
This circuit outputs a TTL-compatible - pulse whenever the signal falls within the limits set by...
Communication systems using spread spectrum techniques, compare to narrow-band systems are more...
I use the lm10 IC because it has a reference voltage and that`s useful for dc power supply. With...
This is the circuit diagram of laser communication system that transmit the sound or music...
An efficiency of around 85 % and a power output of more than 200 watts is what you will get from...
In this picture is everything you will need to make a self running power supply. The input is a...
The robot requires means of detecting an obstacle (or another robot) without making physical...
The chips include an ATmega88 as the main controller, an AD9280 ADC, an LM6134 high-speed quad...
The TPA3112D1 is a 25-W efficient, Class-D Audio power Amplifier for driving a bridge tied...
The TS2418 is a monolithic integrated circuit telephone Tone ringer with bridge Diode when...
Although there are significant variations between different implementations of the...
This kit is the earlier, now retired Ensemble RX version. These instructions are provided for...
Timing IC using long RS6445C constitute blocking oscillator As shown in the timing for the...
Band-stop filter (BEF) integrated operational amplifier, such electrical road performance and a...
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