Chapter 7 Tutorial
Overview of Agilent E3631A Operation
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In terms of performance, linear regulated supplies have a very precise regulating
properties and respond quickly to variations of the line and load. Hence, their line
and load regulation and transient recovery time are superior to supplies using other
regulation techniques. These supplies also exhibit low ripple and noise, are tolerant
of ambient temperature changes, and with their circuit simplicity, have a high
reliability.
The Agilent E3631A contains three linear regulated power supplies. Each is
controlled by a control circuit that provides voltages to program the outputs. Each
supply sends back to the control circuit voltages representing outputs at the terminals.
The control circuits receive information from the front panel and send information to
the display. Similarly the control circuits “talk” to the remote interface for input and
output with the GPIB and RS-232 interfaces.
Figure 7-2. Block Diagram of the Three Supplies Showing the Isolation
The control circuit and display circuit share the same common ground as the ±25V
supplies. The remote interface is at earth ground and isolated from the control circuit
and the ±25V supplies. The +6V supply is also isolated from the remote interface and
the ±25V supplies.