Universal opto-coupled voltage system

An opto-coupled voltage mechanism comprising:

• a protection module;
• a reference and regulation module connected to the protection module;
• an output driver connected to the reference and regulation module;
• and
• an isolation module connected to the output driver;
• and
• wherein:
• the protection module has an input for a system voltage;
• the isolation module has an input for an enable signal;
• the output driver has an output for providing a reference voltage;
• and
• the system voltage can vary from a first value up to at least an order of magnitude greater than the first value, while the reference voltage remains at a second value.

A method for adapting a circuit to a supply voltage of various magnitudes, comprising:

• generating one or more output voltages having constant levels from various supply line voltage levels;
• and
• conveying the one or more output voltages to one or more opto-coupled signal circuits;
• and
• wherein the one or more output voltages bias one or more opto-coupled signal circuits to operate in a correct active range, and limit current to the one or more opto-coupled signal circuits to a magnitude appropriately safe for the one or more opto-coupled signal circuits.