Assertion: capacitor's set | /r/CapableOf | break the dc battery current
Facets:
value: repeatedly
type: TEMPORAL
value: to create a pulsing ac
type: PURPOSE
Source sentences:
text: These operated as a mechanical version of modern solid state switching inverters, with a transformer to step the battery voltage up, and a set of vibrator contacts on the transformer core, operated by its magnetic field, to repeatedly break the DC battery current to create a pulsing AC to power the transformer.