Numeric and graphic recording of magnetization curves by means of analog-digital techniques

Voltage-to-frequency converters with electronic counters are ideal integrators and can be used as fluxmeters for magnetic measurements if the velocity of the flux changes is controlled electronically in order to achieve a nearly constant induced voltage. The field strength is measured by means of Hall probes with a printing sample-and-Hold digital voltmeter which receives its commands by a preset counter after preselected constant flux intervals. For evaluation, all data in binary code may be fed directly into an on-line computer.