Safely deploying power

An apparatus comprising:

• a first switch comprising:
• a first-switch spring having a first state in which it is held in tension and a second state in which it is not held in tension;
• a normally open set of contacts, 1-A-1 and 1-A-2, that are electrically disconnected when the first-switch spring is in the first state and electrically connected when the first-switch spring is in the second state;
• a first-switch restraining element for keeping the first-switch spring in the first state, wherein the first-switch restraining element has a first side and a second side and wherein the first-switch restraining element is permanently collapsible to change the first-switch spring from the first state to the second state when a first-switch actuating voltage is applied across the first side and the second side of the first-switch restraining element;
• a first-switch actuation circuit comprising:
• a first-switch actuation line coupled to the first side of the first-switch restraining element, and
• a first-switch actuation enable line coupled to the second side of the first-switch restraining element;
• a first-switch firing circuit comprising:
• a first-switch power input line coupled to contact 1-A-1,
• a first-switch power output line coupled to contact 1-A-2, and
• a first-switch enable line coupled to contact 1-A-2;
• a second switch comprising:
• a second-switch spring having a first state in which it is held in tension and a second state in which it is not held in tension;
• a normally open set of contacts, 2-A-1 and 2-A-2, that are electrically disconnected when the second-switch spring is in the first state and electrically connected when the second-switch spring is in the second state;
• a second-switch restraining element for keeping the second-switch spring in the first state, wherein the second-switch restraining element has a first side and a second side and wherein the second-switch restraining element is permanently collapsible to change the state of the second-switch spring from the first state to the second state when a second-switch actuating voltage is applied across the first side and the second side of the second-switch restraining element;
• a second-switch actuation circuit comprising:
• a second-switch actuation line coupled to the first side of the second-switch restraining element, and
• a second-switch actuation enable line coupled to the second side of the second-switch restraining element;
• a second-switch firing circuit comprising:
• a second-switch power input line coupled to contact 2-A-1,
• a second-switch power output line coupled to contact 2-A-2, and
• a second-switch actuation enable line coupled to the first-switch enable line;
• a device comprising:
• a first power input coupled to the first-switch power output line, and
• a second power input coupled to the second-switch power output line;
• wherein:
• the first-switch power input line is coupled to a first terminal of a power source, and
• the first-switch actuation line, the second-switch actuation line, and the second-switch power input line are coupled to a device actuation line which is couplable to a second terminal of the power source.

A method comprising:

• coupling a first-switch enable line on a first switch to a second-switch actuation enable line on a second switch;
• coupling a second-switch actuation line on the second switch to a first-switch actuation line on the first switch;
• coupling a second-switch power input line on the second switch to the first-switch actuation line on the first switch;
• applying a first-switch-actuation-polarity power to the first-switch actuation line, a first polarity of the first-switch-actuation-polarity power being defined relative to a first voltage on a first-switch-actuation-enable line, causing the first switch to actuate and remain actuated after the applied first-switch-actuation-polarity power is removed,
• wherein actuating the first switch couples:
• a first-switch power input line to a first-switch power output line;
• and
• the first-switch power input line to the first-switch enable line;
• and
• applying second-switch-actuation polarity power to the second-switch actuation line, a second polarity of the second-switch actuation polarity power being defined relative to a voltage on the second-switch actuation enable line and being opposite of the first polarity of the first-switch-actuation-polarity power, causing the second switch to actuate and remain actuated after the applied second-switch-actuation-polarity power is removed, and
• wherein actuating the second switch couples the second-switch power input line to a second-switch power output line.