A positive control voltage may produce a larger capacitance than a negative control voltage.

When the assay is conducted, the positive control area is wetted by the assay liquid and turns to a second color, thereby functioning as a positive control.

Desmodromic valve control (positively controlled valves)

The controller (27) selectively applies a plus or minus drive voltage to the piezoelectric sheets to perform on/off control.

Formulate a positive command of the required action X / "Make X" /.

This system provides for positive control against external contamination entry into the head flying environment.

By connecting a unidirectional element to the driven circuit, a positive or negative driving source can be obtained.

A first impedance circuit (20) is disposed on the control signal path of the positive electrode control terminal (P3), and a second impedance circuit (22) is disposed on the control signal path of the negative electrode terminal (P4).

A positively controlled sound producer for regulated delivery of pressure gas pulses from a pressure gas line (7) to a resonator (1).

In addition to meeting the geolocation and positive control requirements given above, the control station coordinates the channels used by the white space devices so as to minimize (308) their aggregate interference.

There are positive and negative control areas and an analyte area located within the detection zone.

The positive control area contains one or more components that exhibit a first color whne dry and a second color when wetted.