Posts

Experimental Class D audio amplifier

. I made a class D audio amplifier entirely with discrete components, although not the most recommended, the idea of ​​this project is purely educational to understand the operation of a class D amplifier ...

Simulated inductance

. I recently designed several variable power supplies to test tube amps, actually I designed more than one at the same time with different characteristics. They all have one component in common with the rotator. The shooter ...

NEW LED SECONDS

. NEW LED SECONDS Rivisitazione di un vecchio orologio digitale Ecco di nuovo il maniaco degli orologi digitali. This time to update something old. What the image shows is one of the first digital watches produced about ...

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…

Low resistance meter

  Create a circuit for the precise measurement of low resistances. You already have a DMM to measure resistance, but it can be used with resistances lower than 1Ω? And if so, these low resistive readings are reliable? This…

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 ...

Nikola Tesla misunderstood genius

. For many years, the textbooks they wrote that the benefits of light and electricity have been given by Thomas Edison, while a genius whose innovative technology of Nikola Tesla that surprised and continue to amaze the world ...

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 ...

Fast MOSFET Test

. Often in online discussion I find myself having to explain how a mosfet is head, the test with a multimeter is the fastest but, not from the certainty that the component functions properly in impulsive regime. Rummaging through the drawers ...

Controlling Water Filter

Acqua filtrata con Arduino Descrizione In casa si usa bere acqua filtrata. In fact it is found that sometimes cleaning the filter cartridge demonstrates a muddy patina and for this reason there is the preference to filter drinking water. The year…