phase control


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phase control

[′fāz kən‚trōl]
(electronics)
A control that changes the phase angle at which the alternating-current line voltage fires a thyratron, ignitron, or other controllable gas tube. Also known as phase-shift control.
References in periodicals archive ?
According to the 07180[degrees] phase control strategy above, when ES is used to restrain the fluctuation of demand side power caused by DG, no matter what kinds of noncritical load is in series with ES, the adjustment of smart load input power produced by ES can all be expressed as (13), which can be transformed to be
The above phase control law (17) can drive the phase [[phi].sub.k] (t) of agent k to move towards its waypoint that is determined completely by its two neighbors' relative phases and the desired relative phases [mathematical expression not reproducible].
By means of the phase control, the observed total harmonic distortion of the low voltage network was [THD.sub.u] = 2,34 %, as seen in Fig.
Figure 15 illustrates that 0 -10 V and reverse phase control were most commonly reported for these 80 luminaires.
* Interface of the LS7290 PWM and phase control outputs with 4 AND gates driving 4 NMOS driver transistors for unipolar motors.
The active phase control system uses a phase detector located close to the exposure plate or film to measure optical phase differences between the reference and object beams.
A Wespack phase control thyristor from IXYS offers a cost effective and space saving alternative to conventional designs -- more power, less package.
The phase control and amplitude modulation of separated oscillatory fields are discussed for the measurement of the T-odd correlation term.
Traditional microwave transmitter systems can be simplified by replacing up-converting mixers and associated filters with a vector modulator that directly modulates data onto a carrier signal using orthogonal I and Q control inputs for simultaneous amplitude and phase control. The versatility of the vector modulator allows unlimited modulation control and methods, from simple BPSK or QPSK phase modulation schemes, to dual independent data rate modulations on the non-interfering I and Q channels, to Gaussian minimum shift keying schemes that fully utilize simultaneous amplitude and phase control.
Other applications include power amplifier biasing for RF, audio and amplifiers that require gain or phase control.
High-accuracy amplitude and phase control across multiple output ports provides angle-of-arrival scene generation for DF and location system evaluation.
The AC and DC control types are zero voltage turn-on/zero current turn-off to minimize switching transients while the random control version allows for phase control and pulse width modulation applications.