B&K 1794 Section General Information Description, Output ON/OFF Switch, Limit Setting

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GENERAL INFORMATION

1.1DESCRIPTION :

The 1794 High Current Regulated D.C. Power Supply is completely solid and suitable for bench operation or standard 19" rack operation. It is a well regulated constant voltage / constant current supply which delivers 0-32V at 0-20Amps and can be adjusted continuously throughout the output range. When the supply is used as a constant voltage source the front panel VOLTAGE controls can be used to limit the output voltage. When the unit is used as a constant current source, the front panel CURRENT controls can be used to limit the output current. The unit will automatically cross over from constant voltage to current mode and vice-versa if the output current or voltage exceeds these limits.

Output voltage and current are continuously monitored on two front panel meters. The load terminals and remote sense terminals are provided on the front panel. Either the positive or negative output terminal may be grounded or the power supply can be operated floating at upto a maximum of ±300VDC above ground.

1.2OUTPUT ON/OFF SWITCH :

The output voltage and Current can be preset without connecting the power supply to the load. With the OUTPUT ON/OFF switch in the OFF position, the maximum voltage and current limits can be set. Pressing the OUTPUT ON switch connects the output of the power supply to the load.

1.3LIMIT SETTING :

The voltage and current limits can be set when the output is not connected to the load. With the OUTPUT ON/OFF switch in the OFF position and the LIMIT switch pressed, the voltage and current limits can be set with the front panel VOLTAGE and CURRENT potentiometers.

1.4REMOTE PROGRAMMING ( With External 5K Pot ) :

The output voltage of the unit can be programmed between 0 to 32V by means of an external remote programming voltage resistor. An external resistance programming selector link is provided on the rear panel for this purpose.

1.5REMOTE SENSING :

The degradation in regulation which occurs at the load due to voltage drop in the load leads can be eliminated by using the power supply in the remote sensing mode operation. The remote sensing mode is selected by a push switch on the front panel.

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