Build Basic Radio Frequency Electronic Circuits
Posted on Feb 6, 2014
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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 Remote control Jammer device it’s useful when we need to block someone to use the remote...
This is one of my favorites. The LM386 is a low voltage audio power amplifier. It can provide...
If you use different batteries with actual capacity, with different self-discharge rate of...
This electronic project is a simple microphone preamplifier based on the LM318 op amp. The LM318...
2 versions. First is one based on your schematics, except that I`ve changed those smd capacitors...
Microcontrollers are integrated circuits which consists of microprocessor with additional units...
The parallel interface transfers data 8 bits (or more) at the same time, using eight separate...
This is a 5V to 12V DC-DC step-up (boost) converter circuitry that is especially ideal for the...
This circuit can be built from readily available low-cost components, some of which may even be...
Here is a handy field strength meter that can be used to check the strength of AM radio signals....
This circuit represents another version of an Armstrong Oscillator. This particular example uses...
The circuit is build around an stable multivibrator using NE 555. Here the output at pin 3...
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