Receiver for 50 khz optical transmitter
Posted on Apr 25, 2012
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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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Here`s how to make a good charger for a sealed lead-acid battery (this will NOT work with NiCad...
It consists of a 4047 low-power monostable/astable multivibrator, IC1, used in the astable mode...
One preset resistor is used for all the ranges, simplifying the setting up. Diode clamping is...
This project demonstrates a number of aspects of the PIC16F687 microcontroller, like: ultra low...
Audio from a telephone line can be obtained using a transformer and capacitor to isolate the line...
Rsense would cause Q2 to conduct if at a threshold (0. 65V assumably) and Rbias will determine...
At89s51 microcontroller will be the main component controlling the process, and display different...
All the mods were sourced through the Mssiah forum, so thanks to all for sharing. I`ve tried to...
Although not a new device, the LM317 is still a high-performance regulator. Its output voltage is...
A microphone amplifier that may be used with either Electret Condenser Microphone (ECM) inserts...
This simple and cost-effective ding dong electronic doorbell circuit is based on IC 8021-2. The...
C4, L form a resonator: resonant frequency is the FM transmitting power of the microphone,...
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