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A consistently popular choice of design and test engineers for circuit development, evaluation and burn-in testing, the LPS-151 combines operational flexibility with the time-saving aspects of automatic overload recovery. The three supplies are fully adjustable and the voltage and current meters may be switched to monitor any of the three. A single REFERENCE control sets the ± 25 V supplies.
However, the negative supply may be offset with respect to the positive and the ratio between the two will track as the reference is varied. Full 50 V output may be obtained from the ± 25 V supplies by removing the ground reference. However, the 6 V supply should not be used if this mode is chosen. Current limits may be set for each supply. Exceeding the set limits causes voltage to drop to zero until the loading condition is corrected.
KEY FEATURES
Meter Switches - Selects any one of the three variable outputs for monitoring on separate voltage and current meters. Reference ± 25 V - Control for setting voltage levels. When the tracking ratio switch is set to fixed, both 25 V outputs vary equally. When the tracking ratio switch is set to variable, the ratio of ± 25 V outputs track together. Variable/Fixed - Switch selects tracking or fixed operation modes for ± 25 V outputs. Variable Control - Used to adjust the - 25 V for the starting ratio voltage reference. It is inoperative in the fixed mode. Current Controls - Enables adjustable current limits to be set for each output. If one of the current limits is exceeded, that output voltage goes to zero until the proper load is restored and then output is restored. Thus, both the power supply and circuit under test are protected from overload. |
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