In current designs, the electronics controlling the valve are separate from the valve itself. The correct term to describe the valves is therefore electronically controlled electric valves. Since ...

Piezo elements are electromechanical transducers that convert mechanical forces (pressure, tensile stress or acceleration) into voltages. The inverse piezoelectric effect, precisely the opposite, ...

ELECTRIc valves have been rapidly coming to the-front during recent years for many and varied purposes. For example, the building of large alternating current power stations to replace direct current ...

NOW that the use of higher voltages for bulk supply is becoming more general in this country, the question of protection of electrical plant against damage due to resonance surges in underground lines ...