Abstract: An energy savings device for an inductive, resistive or capacitive load that fluorescent lighting fixture. A setting unit allows a user to set a desired power operating level for the load, and outputs a setting signal as a result thereof. A processor receives the setting signal from the setting unit, and determines a phase delay to be performed on an output AC voltage waveform that is to be provided to the load, wherein the processor outputs a control signal as a result thereof. A switching linear control element receives the control signal output from the processor, and turns off and on at predetermined times in accordance with the control signal, so as to create the output AC voltage waveform as a chopped voltage waveform from the input AC voltage waveform.

Abstract: An energy savings device for an inductive, a resistive or a capacitive load, such as a fluorescent light fixture having a magnetic ballast or an electronic ballast, which is powered by an AC voltage waveform. The energy savings device includes a setting unit for setting a desired power operating level for the load. The energy savings device also includes a microprocessor configured to receive a signal from the setting unit indicative of the desired power operating level for the load, to determine a phase delay to be provided to an output AC voltage waveform that is to be provided to the load, and to output a control signal as a result thereof. The energy savings device further includes an active element provided between a line that provides the input AC voltage waveform and the load, the active element receiving the control signal and turning off and on at predetermined times in accordance with the control signal, so as to create the output AC voltage waveform from the AC voltage waveform.

Abstract: An energy savings device for an inductive or resistive load, such as a fluorescent light fixture having a magnetic ballast, which is powered by an AC voltage waveform. The energy savings devices includes a setting unit for setting a desired power operating level for the load. The energy savings device also includes a microprocessor configured to receive a signal from the setting unit indicative of the desired power operating level for the load, to determine a phase delay to be provided to an output AC voltage waveform that is to be provided to the load, and to output a control signal as a result thereof. The energy savings device further includes an active element provided between a line that provides the input AC voltage waveform and the load, the active element receiving the control signal and turning off and on at predetermined times in accordance with the control signal, so as to create the output AC voltage waveform from the AC voltage waveform.

Abstract: An energy savings device for an inductive, a resistive or a capacitive load, such as a fluorescent light fixture having a magnetic ballast or an electronic ballast, which is powered by an AC voltage waveform. The energy savings device includes a setting unit for setting a desired power operating level for the load. The energy savings device also includes a microprocessor configured to receive a signal from the setting unit indicative of the desired power operating level for the load, to determine a phase delay to be provided to an output AC voltage waveform that is to be provided to the load, and to output a control signal as a result thereof. The energy savings device further includes an active element provided between a line that provides the input AC voltage waveform and the load, the active element receiving the control signal and turning off and on at predetermined times in accordance with the control signal, so as to create the output AC voltage waveform from the AC voltage waveform.

Abstract: An energy savings device for an inductive or resistive load, such as a fluorescent light fixture having a magnetic ballast, which is powered by an AC voltage waveform. The energy savings devices includes a setting unit for setting a desired power operating level for the load. The energy savings device also includes a microprocessor configured to receive a signal from the setting unit indicative of the desired power operating level for the load, to determine a phase delay to be provided to an output AC voltage waveform that is to be provided to the load, and to output a control signal as a result thereof. The energy savings device further includes an active element provided between a line that provides the input AC voltage waveform and the load, the active element receiving the control signal and turning off and on at predetermined times in accordance with the control signal, so as to create the output AC voltage waveform from the AC voltage waveform.

Abstract: A tool for milling a down-hole casing or tubing comprising a tubular body rotatable about its longitudinal axis and having a longitudinal passage therethrough. Means is provided at a first end of the cylindrical body for connection to a drive means to rotate the body. The first end forms the upper end of the body in the working position. At least one first blade extends outwardly from the cylindrical body and has a lowermost cutting edge extending upwardly from its innermost portion at an angle of from about 2.degree. to about 60.degree. to a radial plane perpendicular to said longitudinal axis, and at least one second blade extends outwardly from the cylindrical body and has a lowermost cutting edge extending downwardly from its outermost portion at an angle of from about 2.degree. to about 60.degree. to a radial plane perpendicular to said longitudinal axis.