Abstract: A platelet-rich plasma (PRP) activation system for activating PRP contained in a container includes a housing, a power supply, a piezoelectric transducer array, a support structure, and a coupling medium. The power supply is located in the housing. The piezoelectric transducer array is operably connected to the power supply and is located in the housing. The piezoelectric transducer array is configured to generate a focused shock wave using power from the power supply. The support structure is operably connected to the housing and is configured (i) to receive the container, and (ii) to position the container at least partially within the housing, such that at least a portion of the PRP is located at a focal volume formed by the focused shock wave. The coupling medium is located in the housing and is positioned between the piezoelectric transducer array and the container.

Abstract: A handheld focused extracorporeal shock wave therapy (f-ESWT) device includes a plurality of piezoelectric elements, a power supply circuit, and a plurality of driver circuits. The piezoelectric elements are each configured to generate an individual shock wave. The power supply circuit is configured to output a first DC voltage and a second DC voltage. The first DC voltage greater than the second DC voltage. The driver circuits are each operably connected to the first DC voltage, the second DC voltage, and to a corresponding piezoelectric element of the plurality of piezoelectric elements. Each driver circuit includes a switching element electronically configurable in an open state and in a closed state. When the switching element is in the open state, the first DC voltage and the second DC voltage are applied to the corresponding piezoelectric element to pre-charge the corresponding piezoelectric element with a DC pre-charge voltage having a first polarity.

Abstract: A method of generating a focused shock wave with a handheld focused extracorporeal shock wave therapy (f-ESWT) device includes driving a plurality of piezoelectric elements to generate a focused shock wave based on a first plurality of time delays when a first standoff structure is removably connected to a handheld housing of the f-ESWT device, and driving the plurality of piezoelectric elements to generate the focused shock wave based on a second plurality of time delays when a second standoff structure is removably connected to the handheld housing of the f-ESWT device, the second plurality of time delays different from the first plurality of time delays, and the second standoff structure different from the first standoff structure.

Abstract: A focused extracorporeal shock wave therapy (f-ESWT) system includes an f-ESWT device and a plurality of interchangeable standoff structures. The f-ESWT device includes a housing. The f-ESWT device is configured to generate a focused shock wave as a combination of a plurality of individual shock waves. Each standoff structure is configured for removable connection to the housing to receive and to transmit the plurality of individual shock waves. Each standoff structure of the plurality of interchangeable standoff structures includes a rigid exterior shell defining a shell space, and an elastomeric interior at least partially located in the shell space. The plurality of individual shock waves is transmitted through the rigid exterior shell and the elastomeric interior of a selected standoff structure of the plurality of interchangeable standoff structures that is removably connected to the housing.

Abstract: A focused extracorporeal shock wave therapy (f-ESWT) device includes a handheld housing, a battery, and a transducer assembly. The battery is located in the handheld housing. The transducer assembly is located in the handheld housing and is operably connected to the battery. The transducer assembly is configured to generate a focused shock wave using electrical energy from the battery.

Abstract: An adjustable occupancy sensor capable of being secured to a light fixture includes a housing having a side and a bottom, a sensor assembly attached to the housing at the bottom of the housing, and an adjustable mounting assembly provided on the side of the housing. The adjustable mounting assembly includes a slot defined in the side of the housing and a track having a plurality of segments extending along the length of the track. The track is configured to be releasably secured to the side of the housing within the slot, the plurality of segments being configured to be breakable from the track to adjust a length of the track. The adjustable mounting assembly further includes a connector molded or otherwise secured to the track to connect the housing of the adjustable occupancy sensor to the light fixture. Other embodiments and methods are disclosed herein.

Abstract: A lighting control system includes a power pack and an enhanced occupancy sensor configured to implement multi-valued signaling to encode additional information into the occupancy signal it provides on the signal line. The power pack is configured to monitor the signal line to detect and interpret the additional information. In one example, the lighting control system also includes a manual override switch coupled to the signal line and/or to the occupancy sensor.

Abstract: A dual backplate microphone is provided that utilizes either an electret condenser or a MEMS condenser configuration and in which an op-amp IC is electrically connected to both backplates and the conductive layer of the diaphragm.

Abstract: An adjustable occupancy sensor capable of being secured to a light fixture includes a housing having a side and a bottom, a sensor assembly attached to the housing at the bottom of the housing, and an adjustable mounting assembly provided on the side of the housing. The adjustable mounting assembly includes a slot defined in the side of the housing and a track having a plurality of segments extending along the length of the track. The track is configured to be releasably secured to the side of the housing within the slot, the plurality of segments being configured to be breakable from the track to adjust a length of the track. The adjustable mounting assembly further includes a connector molded or otherwise secured to the track to connect the housing of the adjustable occupancy sensor to the light fixture. Other embodiments and methods are disclosed herein.

Abstract: A lighting control system includes a power pack and an enhanced occupancy sensor configured to implement multi-valued signaling to encode additional information into the occupancy signal it provides on the signal line. The power pack is configured to monitor the signal line to detect and interpret the additional information. In one example, the lighting control system also includes a manual override switch coupled to the signal line and/or to the occupancy sensor.

Abstract: A dimming control for a high intensity lighting system uses a single additional control wire for control of the dimming function. The lighting system operates on multi-phase power. A transmitter for transmitting a control signal over the single control wire is connected between two of the phases of the multi-phase power supply, or between one phase and neutral. The transmitter, upon the occurrence of a predetermined condition, transmits a control signal to the single control wire. The control signal is a rectified portion of the power supply. The predetermined condition is motion as sensed by a motion sensor, operation of a timer, or operation of a manual switch. A receiver connected to the control line receives the control signal and switches the light to a low light output mode. The is accomplished by changing the capacitance of the ballast circuit for the light. Each lamp of the lighting system has a receiver connected to the single control wire.

Abstract: A control relay circuit and method for controlling a relay having a coil, for use, in particular, in operation of a light fixture circuit having an HID lamp. The relay control circuit has an input for receiving a control voltage signal and a voltage storage element connected across the input. The voltage storage element develops a voltage level as a function of time in response to the control voltage signal. A thyristor circuit, a switching element and the coil of the relay form a series circuit that is connected in parallel to voltage storage element A switch controller is connected in parallel to the voltage storage element and is also connected to the switching element.

Abstract: A power line carrier controlled lighting system connected to an AC power line.

Abstract: A power line carrier controlled lighting system connected to an AC power line.