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 ...

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…

BATTERY POWERED TESTER

. TESTER BATTERIE AUTOALIMENTATO Dietro pressanti richieste di un'amica che lavora come addetta all'accettazione presso un centro assistenza ho progettato un tester veloce per batterie. You can not imagine how many come with remote controls ...

Preheat soldering iron

. noninvasive improvement of my economic Station 936 built and marketed under several brands, mine in particular is marked ATTEN but you can find several on the bay 30 € or less. Such soldering station ...

AUTOMATIC CHARGER

. This project is essentially to "rejuvenate" a New Electronic kits, questo è lo schema originario Il problema nasce per due fattori, the relay in the long run will ruin the integrated and become obsolete and practically ...

non-invasive test for injectors

. Now all engines have injectors for fuel, they are managed electronically by a control unit, which decides the injection time or the time for which the injector must remain open and therefore the amount ...

Comparator with hysteresis

. In hysteresis comparator without opamp you do not have the need to eliminate the uncertainty of switching even with infinitesimal oscillations with respect to the value of the threshold or deleted because before the test or irrelevant in the next circuit. ...

FARO MODELISM

. A close friend asks me if I can help in the creation of an automated mechanism for his plastic. Must replace the motorized part with gear ratio of the light of a lighthouse with something with no moving parts due to vibration and noise ...

Understanding of the virtual short circuit in the circuits of the operational amplifiers

.   This article explains and discusses an important simplification technique used in the analysis of the operational amplifier. A more thorough understanding of the functionality of the amplifier is, in my opinion, once…