Posts

THE STRANGE CLOCK IN NTP

Dear ElectroFriends, I haven't seen new publications for some time .... I hope it's not the fault of some virus and I hope you are all in good health. I personally don't have (Luckily) problems, but from a social point of view it ...

Programmable daily timer

      I needed to use a timer, to operate a small mist pump for a small greenhouse, programmable in the following way: 1): active from hours, hours throughout the day. 2): activation…

QD-OLED: the challenge of creating the perfect hybrid TV

. Non stiamo parlando di QLED La nuova tecnologia, natural evolution of Quantum Dot that combines them with OLEDs, potrebbe essere presto messa in commercio da due big del settore come Sony e Panasonic con i primi TV QD-OLED Attualmente tutti…

Electronic power strip

CIABATTA ELETTRONICA Ovvero pilotare 5 prese a 220V tramite WIFI Eccomi con un nuovo progetto e questa volta non si tratta dell’ennesimo orologio più o meno digitale. Some time ago ravanando YouTube looking for some news ...

Current detection

. Methods for detecting the current in order to find the one that best suits the measurement. Shunt: the simplest method is through a Shunt that we can buy or do it yourself with thread with a very low value ...

Nyquist-Shannon theorem

. Comprensione dei sistemi campionati Il teorema di campionamento di Nyquist, or more precisely the Nyquist-Shannon theorem, it is a fundamental theoretical principle that governs the design of mixed signal electronic systems. Technology…

Variable frequency audio generator

. This circuit was created to be used to test amplification stages. It produces both square and triangular wave outputs that rise from approx 80 a 730 Hertz in a repeated cycle of approx 6 seconds. Appropriate value substitutions…

9V by a ni-cd battery with USB charging

. Poking even once in all the drawers looking for a 9V battery charged for a multimeter that has shut in time of need (how could it be otherwise?), I thought it would be nice to have a box of ...

TEN STARS

  TEN STARS Giochi di luce per una stella a dieci punte Che barba, how boring, how boring, How boring: final smash a beloved couple who sadly no more. In these days of forced seclusion serves industrious ...

The IGBT Protection

. Principio di funzionamento I primi IGBT erano tiristori modificati per potersi accendere con un comando in tensione. Consider the BJT equivalent circuit of a thyristor and a MOSFET transistor is added between the collector and emitter ...