Patent ID: 6917197
Filing Date: 2005-07-12
Classification: G01R

Abstract:
1. A device for setting an operating point of a magnetic field sensor having a periodic characteristic for detecting a magnetic field and/or flux, having a SQUID as magnetic field sensor and a control unit connected downstream of the SQUID, the control unit comprising a control time constant (t) and a feedback loop which acts on the SQUID and is active about a number of operating points of the SQUID, a flux quantum pump means assigned to the SQUID, and having a signal generation unit for generating a control and/or regulation signal for the SQUID in order to pump at least one flux quantum into and out of the SQUID, a signal form of the control and/or regulation signal, generated by the signal generation unit, is different and, referred to a rising and a falling edge of a signal form, is unsymmetrical, where in each case only one of the edges of a signal form is short referred to the control time constant.