Inside every VFD is a filament, grid, and cathode – three simple elements also found in the triodes of just about every tube amp ever made. By applying a small voltage to the filament ...

PID control. For applications involving analog process control—such as the flow of a pump or fan—it is usually necessary to implement closed-loop PID control. This can be accomplished in a PLC.

It was decided that a specialized VFD driver chip was the easiest way to make the thing work, so a MAX6934 was ordered. To give the clock some brains, an ATmega328 was recruited and to keep time ...

MUMBAI: With barely hours to go before Maharashtra state goes to the polls on November 20, a citizens' group named Vote For Democracy (VFD) has raised serious concerns over the integrity of the ...