Electric interferences suppression device - removes interferences caused by electromagnetic fields affecting pulse operated defectoscope

摘要

The device is a controllable electronic switch connected in parallel with the control element input; and the resistance of the closed switch is much lower than that of the control element input. The switch control circuit is tuned to the defectoscope measurement range and is connected to its supply mains, so that when an interference appears within the above measurement range, the circuit generates a signal which trips the switch into its closed state, so that the control element input is short-circuited; the switch is a transistor whose collector is connected to the control element input, and its base through the above control circuit to the defectoscope supply mains; or the switch is an electronic valve whose anode and grid are connected as the above collector and base.