Alarm circuit to detect shorting of periodic signal source
Apparatus for and method of measuring polarization potential of
DC current detection system for a current transformer
Detection of DC content in an AC waveform
Determining the magnitude of pulses
Device for detecting voltage fluctuation
Device for measuring the rise time of signals interfered...
Dynamic threshold impulse directivity indicator
Electronic apparatus for detecting stray variations in an electr
Impulse direction detector for ac power systems
Inrush current measuring apparatus with instantaneous power inte
Largest amplitude transient detector
Line voltage monitor
Method and apparatus for duplicating electrical environmental co
Method and system for measuring width and amplitude of current p
Method of and means for measuring distortion of binary and terna
Method of counting electrical load current pulsations
Method of detecting hazardous line voltages over a two-wire line
Methods and apparatus for assessing the quality of logic signals
Methods of and a circuit for monitoring the amplitude of sine wa