Methods and apparatus to determine and display heat input to a weld

A method, comprising:

• outputting welding-type power using a welding-type power supply during a welding-type operation;
• calculating, via a controller circuit of the welding-type power supply, average instantaneous power values of the welding-type operation for discrete, non-overlapping time periods by multiplying voltage measurements and corresponding current measurements;
• storing the average instantaneous power values in a storage device;
• identifying, via the controller circuit, an end of the welding-type operation;
• determining, via the controller circuit, a duration of the welding-type operation;
• calculating, via the controller circuit, a total average instantaneous power of the welding-type operation based on the average instantaneous power values for the time periods and the duration of the welding-type operation;
• and
• determining, via the controller circuit, whether an acceptable range of the welding-type operation is exceeded based on the total average instantaneous power and the duration of the welding-type operation.

A welding-type power supply, comprising:

• a power converter to convert input power to output welding-type power supply;
• and
• a controller configured to:
• during a welding-type operation, calculate average instantaneous power values of the welding-type operation for discrete, non-overlapping time periods by multiplying voltage measurements and corresponding current measurements;
• identify an end of the welding-type operation;
• determine a duration of the welding-type operation;
• calculate a net average instantaneous power of the welding-type operation based on the average instantaneous power values for the time periods;
• and
• determine whether an acceptable range of the welding-type operation is exceeded based on the net average instantaneous power and the duration of the welding-type operation.