Engineer Sergii Zadorozhnyi website
Simple SolutionsRF Signal Generator as Arduino Uno Expansion Board
Saturday , 8, June 2019 Measuring, Radio Leave a comment
If You need for the RF signal source, proposed RF Signal Generator, made as Arduino Uno expansion board, can help out. The RF Signal Generator shield, designed with Direct Digital Synthesis (DDS) IC, is installed into Arduino Uno board directly, eliminating the very possibility of error when connecting such devices with wires.
Read MoreJButton Button: Repeating Action while Holding It Pressed
Friday , 15, February 2019 Software Leave a comment
Now the JButton element of graphical user interface (GUI) from the Java’s language Swing Visual Components Library, when held pressed, triggers a multiple repetition of the same action as when it was clicked once. You can include a ready-made class that inherits from JButton in your Java project and simply use it.
Read MoreInterfacing with Ultrasonic Ranging Module HC-SR04 via One Signal Line
Tuesday , 4, April 2017 Measuring, Software, Solutions Leave a comment
To connect the HC-SR04 ultrasonic ranging module to microcontroller (for example, Arduino UNO), four wires are usually required. But while the Vcc and GND wires are necessary, the Trig and Echo wires can be “combined” into one with a simple circuit. The software to control the HC-SR04 ultrasonic ranging module via one signal line see here too.
Effective Length of Receiving Magnetic Loop Antenna
Part 3: Resonant Loop Antenna
Monday , 4, July 2016
Radio
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A loop antenna, supplemented with a variable capacitor to tune into resonance with the received signal, converts the energy of an electromagnetic wave into signal voltage much more efficiently, that is, its effective length is much more than that of an ordinary loop antenna. Here, in the third part, the determining of how much more is given.
Read MoreEffective Length of Receiving Magnetic Loop Antenna
Part 2: Multi-turn Wire Loop Antenna
Monday , 4, July 2016
Radio
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In the first part, the definition of the effective length of the receiving antenna in general was given, the relationship between the electric and magnetic fields induced by the electromagnetic wave at the receiving point was shown, and an expression was obtained for calculating the effective length of the loop antenna, consisting of one turn of the electric wire.
Read MoreEffective Length of Receiving Magnetic Loop Antenna
Part 1: Single-turn Wire Loop Antenna
Monday , 4, July 2016
Radio
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How to compare the efficiency of different receiving antennas? When comparing electric receiving antennas with each other the effective length of an antenna is used as a coefficient of ratio between the voltage induced on the open-circuited terminals of the antenna and the power of the electromagnetic wave at the receiving point. And note that effective length and geometrical length of electric antennas often differ. But how to compare the efficiency of electric and magnetic receiving antennas?
Read MoreThe German “GRAHN GS5-SE” antenna is not as effective as the “Olusha-10” – a feedback review of the anti-noise ferrite rod antenna “Olusha-10” working
Saturday , 1, September 2012 Radio Leave a commentA Moscow radio amateur sent a review of the “Olusha-10” anti-noise ferrite rod antenna working. He carried out comparative testing twice and made two audio recordings that confirm the ability of this antenna to suppress radio interference in the medium wave frequency range. The comparison was carried out with the standard telescopic antenna of the “Eton E1” radio receiver, an external wire antenna about 15 m long, as well as with the loop and ferrite modules of the German active antenna “GRAHN GS5-SE”.
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