Patent ID: 7480583

Claim:
A method for testing a circuit, comprising: executing a test program for testing the circuit; when the test program specifies an application of a direct current (DC) voltage to a particular node of the circuit, i) configuring an operational amplifier of the circuit test system to respond to remote feedback, wherein the remote feedback is responsive to a load on a circuit test system test pin that is coupled to the particular node of the circuit, and ii) applying the DC voltage to the particular node of the circuit via the operational amplifier; and when the test program specifies an application of a high-voltage waveform to the particular node of the circuit, i) configuring the operational amplifier of the circuit test system to respond to local feedback, wherein the local feedback is not responsive to the load on the circuit test system test pin, and ii) applying at least a high-voltage portion of the high-voltage waveform to the particular node of the circuit via the operational amplifier.