There are plenty of radios you can buy that pick up MW and SW bands if that’s what you’re into. Or, you can follow [mircemk]’s example, and whip one up yourself instead. The build employs an ESP32 as ...

Tony Goacher] has worked with a lot of cheap brushless DC motor controllers built in China. They can be very cost-effective, ...

Abstract: With high-proportion power electronic converters penetrating AC grid, high-frequency oscillations of AC voltage and current are frequently observed during system dynamics. The ...

Abstract: This article proposed a full-Si-based two-stage voltage source inverter (VSI) along with its specialized modulation strategy aimed at reducing switching power loss and increasing pulsewidth ...

Frequency combs are light sources with a spectrum that comprises a series of sharp, equally spaced lines. The frequencies of these lines are known to a very high degree of accuracy, which makes ...

You need to know about these quantities used in waves - what they mean, the symbols used for them and the units used to measure them. The amplitude (\(a\)) of a wave is the distance from the centre ...

f = frequency = number of waves produced by a source per second, in hertz Hz. T = period = time it takes for one complete vibration or oscillation, in seconds s. A boat at sea bobs up and down as ...

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This proposal aims to outline the development of custom firmware for the ESP32, which will enable it to interface with a SAMD51 chipset-based board and serve as the RF module in a Frequency-hopping ...

KISS FFT converts a time-domain signal (a series of samples from a microphone, ADC, accelerometer, etc.) into the frequency domain, revealing which frequencies are present and how strong each one is.