JFETs are key elements in high-impedance devices like MEMS sensor buffers, microphone preamplifiers or Moving Magnet (MM) phono preamplifiers. (Don’t misfit with MOSFETs!). Nevertheless, there are somehow controversial components for Hi-fi aficionados. Generally, BJTs high […]
Capacitors come in two main types: electrolytics and non-electrolytics. There are not ideal elements, less to say, and intrinsically present Equivalent Series Resistance (the famous ESR), current leakage, dielectric absorption and, as usual with real […]
Resistors have two main issues when you want to design a low noise, low distorsion system : noise and linearity. Imagine also that you design a RIAA filter : tolerance and linearity are major concerns […]
The LoRa Alliance has announced that public LoRaWAN networks have grown by 66 percent over the past three years. LoRaWAN is an open standard for IoT low-power wide-area networks (LPWANs). The LoRa Alliance has more than 500 […]
IoT designers should thank Philips Semiconductors company everyday for inventing the I2C bus in the 80s (I2C means Inter-Integrated Circuit). Two wires only and several ‘masters’ can communicate synchronously to several ‘slaves’. In comparison, SPI […]
The pioneer of all industrial communications protocol is Modbus, which is still widely used in industry and IoT as well. Modbus has been created in 1979 by Modicon (now Schneider Electric). The protocol is now […]
