Two Line Intercom circuit
Posted on Apr 29, 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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Laser based projects used to be expensive, until the development of solid state lasers. This...
I designed this project for another boy who had a much bigger box of electronic scrap than me so...
This circuit is another radio frequency (rf) field strength meter, similar with our previous...
This is a Constant Current Source LED Driver, When the LED driver Upper-NPN is driven by a...
Rsense would cause Q2 to conduct if at a threshold (0. 65V assumably) and Rbias will determine...
The idea was to show time passing, but instead of a traditional clock face or digits or lights...
This is the schematics of a low cost mic mixer that can be assembled from the components in your...
This is a 9V DC power source, to a 555 timer to get a square wave. Then fed through a Half-Wave...
This is a fun and useful circuit for demonstrating high frequency high voltge. It can produce up...
LS-2 remote control switch infrared sensor module is basically the same with the LS-18, in...
Circuit shown in Figure 3-191. The line in the DC motor armature circuit in series two-stage...
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