Operation and Features 2Keysight U2722A/U2723A User’s Guide 53Extending the Output PowerThe U2722A/U2723A is equipped with three dedicated channels of up to 20 V and120 mA per channel.Series connectionsTo increase the output voltage, tie two or more of the outputs in series as shownin Figure 2-13. This is to obtain a higher voltage than that available from a singleoutput. Series connected outputs can be operated with one load across theconnected outputs or with a separate load for each output.When a series connection is used, the output voltage is the sum of the voltages ofthe individual output. The current is the current of any one output. Each of theindividual outputs must be adjusted to obtain the total output voltage.Figure 2-13 U2722A/U2723A outputs connected in seriesOutput 2 Output 3SENSE OUTPUT GUARD OUTPUT SENSE SENSE OUTPUT GUARD OUTPUT SENSE SENSE OUTPUT GUARD OUTPUT SENSE+Output 1Positive (+) terminal of the device-under-test Negative (–) terminal of the device-under-test+ + + + +- - - - - -NOTE – Ensure that the voltage (when source current) or the current (when sourcevoltage) is not clamped.– Preferably, both are at the same current range.