Abstract: A furnace including: a blower assembly compartment; a blower assembly located within the blower assembly compartment; a blower motor located within the blower assembly compartment, the blower motor operably connected to a fan of the blower assembly; an induced draft blower; an inducer motor operably connected to the induced draft blower; and a dual motor controller located within the blower assembly compartment, the dual motor controller being configured to independently control at least one of a torque or a speed of the blower motor and the inducer motor.

Abstract: The invention relates to a burner cover insulation device for shielding a burner cover from a boiler burner, the device comprising a cover layer comprising a heat resistant inorganic fibrous material and having a first outer peripheral edge; a support layer providing mechanical strength to the device and having a second outer peripheral edge that at least extends to the outer peripheral edge of the cover layer; and a filling material forming an insulating layer between the cover layer and the support layer, wherein a through hole extends through the cover layer and the support layer. The invention furthermore relates to a method for manufacturing such a device.

Abstract: The invention relates to a burner cover insulation device for shielding a burner cover from a boiler burner, the device comprising a cover layer comprising a heat resistant inorganic fibrous material and having a first outer peripheral edge; a support layer providing mechanical strength to the device and having a second outer peripheral edge that at least extends to the outer peripheral edge of the cover layer; and a filling material forming an insulating layer between the cover layer and the support layer, wherein a through hole extends through the cover layer and the support layer. The invention furthermore relates to a method for manufacturing such a device.

Abstract: The invention relates to a burner cover insulation device for shielding a burner cover from a boiler burner, the device comprising a cover layer comprising a heat resistant inorganic fibrous material and having a first outer peripheral edge; a support layer providing mechanical strength to the device and having a second outer peripheral edge that at least extends to the outer peripheral edge of the cover layer; and a filling material forming an insulating layer between the cover layer and the support layer, wherein a through hole extends through the cover layer and the support layer. The invention furthermore relates to a method for manufacturing such a device.

Abstract: System for generating a pulsed signal of the ultra wideband type, comprising a device for direct digital frequency synthesis (DDS) comprising a phase accumulator (ACCP) able to deliver at a first frequency (Fclk) phases coded on i bits and spaced apart by a phase increment (?p) differing by a power of two and situated in the vicinity of 2i-1, processing means (MT) able to receive said phases and arranged so as to deliver an amplitude-modulated output signal (SG) whose envelope exhibits a succession of regions respectively delimited by zones of zero amplitude (ZA, ZB), each amplitude-modulated signal part situated in one of said regions forming a pulse of the ultra wideband type (IMP) whose central frequency is equal to said first frequency and whose width depends on the value of the phase increment, and control means (MC) able to regulate the operation of the digital synthesis device so as to selectively deliver one or more pulses of the ultra wideband type.

Abstract: An electronic circuit includes several (at least two) oscillating and/or resonant devices. The circuit uses a measuring device to measure the phase noise of one of the two oscillating/resonant devices. This measuring device is integrated on a chip on which the oscillating/resonant device to be measured is also integrated. The circuits and methods described find application in the area of radiofrequency/high frequency electronics RF/HF, in particular adapted to general public applications in mobile communication systems and/or to metrology.

Abstract: System for generating a pulsed signal of the ultra wideband type, comprising a device for direct digital frequency synthesis (DDS) comprising a phase accumulator (ACCP) able to deliver at a first frequency (Fclk) phases coded on i bits and spaced apart by a phase increment (?p) differing by a power of two and situated in the vicinity of 2i?1, processing means (MT) able to receive said phases and arranged so as to deliver an amplitude-modulated output signal (SG) whose envelope exhibits a succession of regions respectively delimited by zones of zero amplitude (ZA, ZB), each amplitude-modulated signal part situated in one of said regions forming a pulse of the ultra wideband type (IMP) whose central frequency is equal to said first frequency and whose width depends on the value of the phase increment, and control means (MC) able to regulate the operation of the digital synthesis device so as to selectively deliver one or more pulses of the ultra wideband type.

Abstract: An electronic circuit includes several (at least two) oscillating and/or resonant devices. The circuit uses a measuring device to measure the phase noise of one of the two oscillating/resonant devices. This measuring device is integrated on a chip on which said oscillating/resonant device to be measured is also integrated. The circuits and methods described find application in the area of radiofrequency/high frequency electronics RF/HF, in particular adapted to general public applications in mobile communication systems and/or to metrology.