40khz IR tester
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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The limitation of car supply voltage (12V) forces to convert the voltages to higher in order to...
This circuit will switch off the line supply to audio or video equipment if there has been no...
The circuit even has a current limiting feature which is a more reliable system than most...
This project is currently output two PWM signals but can be extended to many PWM signals very...
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The purpose of this page is neither to give a comprehensive review of this popular theremin...
Using the LM3551 and LM3552 are fixed frequency, current mode step-up DC DC converters with two...
This metal detector circuit electronic project is an very simple circuit that is based on common...
This circuit is intended for children fun, and is suitable to be installed on bicycles, battery...
This is a fun and useful circuit for demonstrating high frequency high voltge. It can produce up...
When button S12 (#) is pressed, a positive voltage fed through R1 appears at the base of...
As shown in the Colpitts oscillator based on the deformed oscillator basis is formed by an...
CMOS clock circuit can drive a multi-digit gas discharge display, simple circuit does not...
Figure 4-27 (b) line than in Figure 4-27 (a) line more than a capacitor, to improve and increase...
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