188710 ⎘
Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems; Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load with phase control
Power supply apparatus for performing wireless communication between first circuit and second circuit insulated from first circuit, and image forming apparatus including power supply apparatus
#2Flexible transformer system
#3Integral half cycle (IHC) control
#4Device and method for electrical energy synthesis
#5Electrical load controller having a frame with an integrally formed backlightable indicator region
#6Semiconductor switch control device
#7Power controller and power control method
#8Operating a wind turbine being connected to a utility grid both via a HVDC power connection and via an umbilical AC cable with a network bridge controller performing a power and a voltage control
#9Operating a wind turbine being connected to a utility grid solely via an umbilical AC cable with a network bridge controller performing a power and a voltage control
#10Electrical load controller having a frame with an integrally formed backlightable indicator region
#11Constant-voltage drive device capable of adjusting output voltage
#12Electrical load controller having a frame with an integrally formed backlightable indicator region
#13High-frequency wave type of X-ray generator
#14Lighting device adapted for synchronous control
#15Automobile electronic regulator
#16Multiple-level power control system
#17METHOD AND APPARATUS FOR SUPPLYING AND SWITCHING POWER
#18Phase angle measurement of a dimming circuit for a switching power supply
#19Voltage ripple reduction
#20Switching regulator and control circuit and control method thereof
#21Active bleeder circuit triggering TRIAC in all phase and light emitting device power supply circuit and TRIAC control method using the active bleeder circuit
#22Phase angle measurement of a dimming circuit for a switching power supply
#23Phase control apparatus
#24Phase angle measurement of a dimming circuit for a switching power supply
#25Method and apparatus for controlling phase of AC power and method of controlling heating element of fixing unit
#26Device for adjusting the impedance of a high voltage line supplying an alternating current