Abstract: This disclosure relates to techniques to sanitize eggs. More specifically to sanitizing eggs in a manner such that damage to the cuticle of the egg during sanitization is reduced or eliminated. A method includes the activation of photoactivated sanitizing agent with an appropriate wavelength of light at an intensity that eliminates, reduces, or slows the production of, pathogens on the shell of an egg. The photoactivated sanitizing agent can include an exogenously-applied photoactivated sanitizing agent and an optional photosensitizer, which can be activated with light having a wavelength known to activate the exogenously-applied photoactivated sanitizing agent. The photoactivated sanitizing agent can include an endogenously-derived photoactivatable compound. Light in the Soret band can be utilized to activate the endogenously-derived photoactivated sanitizing agent.

Abstract: An analog AC driven fully dimmable circuit that reduces the gap between peak current and a minimum current to improve dimming properties and provide additional functionality to a lighting device. The circuit provides ancillary circuitry that bypasses an analog step driving section of the circuit without the use of an ancillary transistor. The ancillary circuitry bypasses the analog step driving section of the circuit and has a capacitor to continuously provide current to the first series interconnection such that the first series interconnection continuously emits light during operation of the circuit.

Abstract: An analog AC driven fully dimmable circuit that reduces the gap between peak current and a minimum current to improve dimming properties and provide additional functionality to a lighting device. The circuit provides ancillary circuitry that bypasses an analog step driving section of the circuit without the use of an ancillary transistor. The ancillary circuitry bypasses the analog step driving section of the circuit and has a capacitor to continuously Provide current to the first series interconnection such that the first series interconnection continuously emits light during operation of the circuit.

Abstract: In one embodiment, a fluorescent lamp dimming circuit includes power factor correction control, dimming control, and switching devices. The power factor correction control may be connected to power factor correction circuitry that produces a regulated DC buss. The dimming control circuit may be connected to the input of the fluorescent lamp dimming circuit for producing a driver signal whose frequency varies depending on the input voltage waveform perhaps as modified by a dimmer. The control circuit may produce a drive signal with a duty cycle profile to drive switching devices. The switching devices invert the DC buss voltage to an AC voltage waveform for driving a resonant tank circuit. The resonant tank circuit may include an inductance, a capacitance, and the impedance of a fluorescent lamp. The AC voltage waveform when applied to the resonant tank circuit may cause the fluorescent lamp to dim based on the dimmer setting.

Abstract: In one embodiment, a fluorescent lamp dimming circuit includes power factor correction control, dimming control, and switching devices. The power factor correction control may be connected to power factor correction circuitry that produces a regulated DC buss. The dimming control circuit may be connected to the input of the fluorescent lamp dimming circuit for producing a driver signal whose frequency varies depending on the input voltage waveform perhaps as modified by a dimmer. The control circuit may produce a drive signal with a duty cycle profile to drive switching devices. The switching devices invert the DC buss voltage to an AC voltage waveform for driving a resonant tank circuit. The resonant tank circuit may include an inductance, a capacitance, and the impedance of a fluorescent lamp. The AC voltage waveform when applied to the resonant tank circuit may cause the fluorescent lamp to dim based on the dimmer setting.