Abstract: A method of setting up a portable barrier that includes a pedestal assembly with first and second legs, a cover assembly with first and second arms, and a tensioner is disclosed. The method includes (a) moving the first leg from a collapsed configuration to an expanded configuration, (b) moving the second leg from a collapsed configuration to an expanded configuration, (c) moving the first arm from a collapsed configuration to an expanded configuration, and (d) moving the second arm from a collapsed configuration to an expanded configuration, (e) moving the tensioner from a collapsed configuration to an expanded configuration; and (f) while the tensioner is positioned in its expanded configuration, maintaining with the tensioner: (1) the first leg in its expanded configuration, (2) the second leg in its expanded leg configuration, (3) the first arm in its expanded configuration, and (4) the second arm in its expanded configuration.

Abstract: A control for an inverter system having first and second inverters that produce inverter outputs wherein the inverter outputs are combined by an interphase transformer (IPT) to produce an AC output includes circuitry for detecting a magnitude of a harmonic component in the AC output waveform and circuitry for developing first and second PWM control waveforms for controlling the first and second inverters, respectively. The second PWM control waveform is phase delayed relative to the first PWM control waveform to in turn regulate the magnitude of the harmonic component and DC content across the IPT is controlled to prevent damage to the IPT.

Abstract: A refrigeration system which may be operated to control superheat at an inlet to a compressor (12) to produce a controlled superheat or to control a temperature of a fluid cooled by at least one evaporator (68) to provide the cooled fluid at a set temperature by controlling an opening of at least one expansion valve (62) in accordance with the invention includes a temperature control (206) which is activable to control the at least one expansion valve to cool the fluid to a set temperature in response to an enabling signal; a superheat control (208) which is activable to control the at least one expansion valve to control the superheat at the inlet of the compressor in response to an enabling signal; and a controller (204) responsive to the at least one logic operational state of the refrigeration system, for generating one of the enabling signals to activate one of the temperature control or the superheat control to control the at least one expansion valve to control superheat or provide cooled fluid at the