Two tuners were developed for this receiver. The more sensitive one uses tetrode transistors in the RF amplifier, mixer and oscillator. Its disadvantages lie in a much higher cost and a 12 to 14 db ...

Abstract: In this paper we present a novel polylactic acid (PLA)-based printed circuit board (PCB) substrate with flax reinforcement to form a biodegradable alternative to classical PCB materials. The ...

Abstract: In this study, a novel printed circuit board (PCB) substrate made of polylactic acid (PLA) reinforced with flame-retarted flax fibers is presented as a biodegradable substitute for ...

ESP32 is a tiny cheap 8$ module with a dual core 32-bit CPU and built in Wi-Fi and dual-mode Bluetooth with sufficient amount of 30 I/O pins for all basic electronics projects. All these features are ...