 Image Number 5 for United States Patent #5402084.
A circuit for coupling a signal source producing a signal having a given voltage waveform to a load having two ends, the circuit being composed of: a load voltage control unit connectable between the signal source and one end of the load for producing across the load a voltage corresponding to the signal voltage; and a load current control unit connectable to the load and operable independently of the signal source for producing a current flow through the load sufficient to cause the voltage across the load or the current through the load to have the given waveform.
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