Four Quadrant Power Supplies suit solar cells and panels.
Press Release Summary:
Available in 200 and 400 W models, Series BOP capacitive load power supplies can linearly pass through zero to produce outputs of either positive or negative polarity, and function in 4 quandrants of orthogonal voltage-current area as either source or sink. Operating in voltage or voltage limit mode for capacitive loads up to 10 mF, supplies are also stable when driving any R-C parallel combination where load R is greater than or equal to nominal value and C is less than or equal to 10 mF.
Original Press Release:
Four Quadrant Power Supplies for Solar Cells/Panels and Piezo-Electric Applications
Bipolar Power Supply, 4-Quadrant
A power supply able to linearly pass through zero to produce outputs of either positive or negative polarity and able to function in all four quadrants of the orthogonal voltage- current area as either source or sink.
Series BOP Capacitive Load Models
Kepco introduces 200 Watt and 400 Watt BOP models, optimized for driving capacitive loads, as an option to the standard line of BOP power supplies. This option makes the BOP suitable for a wide variety of applications such as solar cell/panel testing, driving and testing piezo-electric devices, capacitor testing, driving and testing capacitive transducers, and power for industrial or lab applications with capacitive or capacitive-resistive loads.
These BOP units are designed to operate in a stable manner in voltage or voltage limit mode for capacitive loads up to 10mF. They are also stable when driving any R-C parallel combination where load R is greater than or equal to nominal value and C is less than or equal to 10mF. Load R (nominal value) = nominal output Voltage/nominal output Current (e.g., BOP 36-6MC, R = 36/6 = 6 Ohms). To prevent current limit mode operation, the equivalent impedance of the R-C parallel load circuit must be greater than the nominal R value at the working frequency.
Static specifications representing accuracy for various influence parameters are identical to the standard BOP models. Ripple and noise specifications are better (approximately 50% lower) for the C option units compared to the standard BOP.
For digital meters, substitute the letter D for M when ordering - example: BOP 20-20DC.
For GPIB control of the BOP, add the suffix 4886 after the letter C in the model name - example: BOP 20-20MC4886.
(1) All specifications listed are for capacitive load models in Voltage Mode.
(2) 20V model only: Variation of the frequency response creates a larger 3-dB bandwidth when driving a resistive load than for the standard model.
(3) Variations of the frequency response for the standard 10µF load create a larger 3-dB bandwidth than for a resistive load.
(4) 10% - 90%, with nominal resistive load.
(5) Load between infinity and nominal resistive values.