EEssential

A question sometimes comes up concerning whether to tent or not tent the vias on a PCB.  Altium by default does not tent the vias.  There ar...

Occasionally, we may need fuses in parallel to achieve greater current rating.  For instance, the Mini ATO fuses come maximum 30A; any more ...

Consider the simplest case, a body is acted on only by the force that you control.  You want to reach certain speed; how should you control ...

When the motor drive operates in the torque mode, a constant torque implies a constant current in the motor winding.  But we see the supply ...

The term "noise gain" is used a lot in designs with opamps.  So what is noise gain and how is it useful? If we model the opamp n...

The Harbor Freight Cen-Tech multimeter is about $4 or less.  It measures voltage to 1000V DC/750V AC, current to 10A DC, resistance to 2MOhm...

Here I give a review of electronic components that I used, particular on their quirks. Atmega644A Atmega644A has the same peripherals as ...