Ir-transmitter
Posted on Jan 2, 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 is a compact three transistor regenerative general coverage receiver with fixed feedback....
This interface circuit provides electrically isolated RS422 communication interface to the PC...
The device comprises two parts: LED control board and LED display board. The two PCBs are...
The HI-506 multiplexer is used as an analog input selector, controlled by a binary counter to...
A fixed current flows through any load that is connected between the positive supply and Ql"s...
After all job of building the prototype and making the sketch work, it`s the time to build the...
Consider that a school has a total of eight periods with a lunch break after the fourth period....
This article briefly describes the NTSC-PAL TV Signal Identifier (LM1881). Although this circuit...
This circuit can control any one out of 16 devices with the help of two push-to-on switches. An...
I was asked by the MDRC committee of the day if I would like to take on the role as Electronic...
In some versions you don`t have the input buffer at all, and in some versions the buffer...
As shown in Figure by the built-in temperature sensor to control the triac TC620 achieve...
As a result of the circuit shown in Darlington type phototransistor as the sensing element, the...
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