Dying gasp power apparatus

A power apparatus, comprising:

• at least one first power supply configured to receive power from a main power supply, the at least one first power supply including at least one first input capacitor to smooth voltage ripples and store energy;
• at least one second power supply configured to receive power from the main power supply;
• a voltage monitor configured to monitor a voltage provided by the main power supply to the power apparatus, the voltage monitor being configured to cause enablement and/or disablement of at least one part of the at least one first power supply according to the voltage provided by the main power supply to the power apparatus;
• and
• at least one first blocking and passing component which is configured to selectively:
• channel energy from the main power supply to charge the at least one first input capacitor when the at least one part of the at least one first power supply is enabled;
• and
• channel the energy from the at least one first input capacitor to the at least one second power supply when the at least one part of the at least one first power supply is disabled,
• wherein:
• the at least one first blocking and passing component includes a first diode and a second diode;
• the first diode is configured to connect the main power supply to the at least one first power supply;
• the second diode is configured to connect the at least one first power supply with the at least one second power supply;
• when the first diode is forward biased, the at least one first input capacitor is being charged by the main power supply;
• and
• when the second diode is forward biased, the at least one first input capacitor is being discharged to the at least one second power supply.

A method, comprising:

• receiving power in at least one first power supply from a main power supply;
• smoothing voltage ripples and storing energy using at least one first input capacitor of the at least one first power supply;
• receiving power in at least one second power supply from the main power supply;
• monitoring a voltage provided by the main power supply;
• causing enablement and/or disablement of at least one part of the at least one first power supply according to a voltage provided by the main power supply;
• channeling energy from the main power supply via a first blocking and passing element to charge the at least one first input capacitor when the at least one part of the at least one first power supply is enabled;
• and
• channeling the energy from the at least one first input capacitor via a second blocking and passing element to the at least one second power supply when the at least one part of the at least one first power supply is disabled,
• wherein the first blocking and passing element and the second blocking and passing element are connected in parallel between the at least one first input capacitor and an input capacitor of the at least one second power supply.