{"id":"S2014000549","label":"PWM power converters","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2014000549","normalized_label":"pwm power converters","broader":["http://id.loc.gov/authorities/subjects/sh85041637"],"aliases":["Pulse width power converters","Pulsewidth modulation converters"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2014000549","provider":"lcsh","revision":"7081f066166761ac","taxonomy_revision":"f050b5d4780b1289","title":"PWM power converters","url":"/topics/S2014000549","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9243721808365225024","address_version":"morton4x16-v1","coordinates":[0,480,11478,37888],"answer_status":"Directory metadata; local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}