Posts

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 ...

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 ...

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 ...

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 ...

Fuel Cells

. Rechargeable batteries are not clearly enough to power electric cars for a considerable period of time. Without reliable and capacious batteries, you lose the challenge of mass mobility. So the industry is working ...

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 ...

Circuits restraint soft

. The use of a single tactile button to toggle a circuit ON and OFF requires a circuit containing a logical bistable latch. Such a latch may be implemented using a flop flop or using a positive feedback ...

Movement controlled encoder

Descrizione Semplice controllo di rotazione con motoriduttore che ha un encoder a due fasi montato sull’albero del motorino elettrico. During the tests I burned the 16F84A I had and for this I used a 16F628A. The program…