Conventional DC sources usually have the function of power supply (source) only without power absorption (sink) function. In addition to the source function, the sink is available, so the 7651 can be used for the discharge characteristics of batteries or the output characteristics of power supply as a constant current electronic load. Further, the 4-quadrant operation becomes available by sink and source function, so both capacitive and inductive loads can be driven by the 7651.

As a Reliable Constant Voltage Source


E1 > E2 sink operation. The generation of constant voltage is possible even with active load.

Bipolar output, glitchless

The bipolar output of the 7651 executes polarity switching without using mechanical contact, so any abnormal voltage or current is not generated at the polarity switching. Because of this feature, true continuous output change from the negative maximum output to the positive maximum output becomes possible. An evaluation of zero cross comparator or polarity switching for the cancellation of emf in experiments of solid-state physics can easily be made.
A glitch is not generated at the change of voltage or current in the same range.

Resistance Measurement of Superconductivity  


V1 = I*R + E
V2 = -I*R + E
V1 - V2 = 2I*R

Programmable voltage/current limiter

Limiting point is programmable within the range of 1 to 30 V as the voltage limiter, and within the range of 5 to 120 mA as the current limiter.
Even if the limiter is actuated by overload or short-circuit of output and so on, the 7651 automatically recovers from limit to normal state by removing the overload.

Calibration function

Calibration software is integrated in the 7651, and calibration is executed by the key operation on the front panel or through communication without opening the case. So, anyone can maintain the accuracy of the 7651 without difficulty by its calibration function.

GP-IB interface (Standard)

The GP-IB interface can be selected according to your system needs. The following functions are available through these interfaces.

• Functions executed by panel key operation
• Setting data output
• Panel set data output
• Program step setting/reading
• Status byte output