Contents. 1 Block Diagram. 2 Specifications. 3 Unipolar vs. Bipolar Interconnections. 4 Inexpensive Bipolar Power Supply Alternative.

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1 Contents 1 Block Diagram 2 Specifications 3 Unipolar vs. Bipolar Interconnections 4 Inexpensive Bipolar Power Supply Alternative 5 PCB Layout 6 Calibration 7 Current Source-Sink Units Connected in Parallel Model Selection Table: RDM-Apps 0

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3 Specifications: Adjustable Bipolar Constant Current Source / Sink Output Maximum CSEPWR Module Power Dissipation: AC: 45W... DC:30W Maximum Output Current: DC: 5A... AC: 5A rms Multiple CSE-PWR module outputs may be connected in parallel for increased power ( 90W, 180W...) to your application. Please contact us for further information. Two CSE-PWR modules may be connected in a bridge topology to accommodate Floating output Bipolar applications. Please contact us for further information. Maximum Output Load Compliance: ±30V ( 60Vpp ) Converts from input voltage to output constant current. Current Output Control: a.) Selection#1: ±5V ( 1V/1A... In/out ) input relative to applicable model full range current out. b.) Selection#2: Manual Trim-Potentiometer adjustment. Control Circuit Power Requirements: +12Vdc; less than 500mA... Universal Input AC adapter Included: +12Vdc; 15W CSEPWR Output / Load Power Supply (Not Included) Requirements: ±6VDC to ±30VDC; 60W to 150W DC Accuracy: better than 1.0% 10deg.C to 40deg.C AC Accuracy: better than 2.0% 10deg.C to 40deg.C Max. BW: Better than 10KHz... Note: for unipolar operation the analog input control signal must be unipolar in order to maintain the 10KHz rating. Enclosure Dimensions ( L x W x H ): 6" x 4.2" x 2.5" (15.2cm x 10.7cm x 6.4cm) Contact us for multi-range or custom constant current modules. Max. Load Current Values ( AC DC ) for Max. Load Voltage vs. Load Impedance Pwr. Supply Max. Output Load Voltage 0.1Ω 0.5Ω 1Ω 2Ω 3Ω 4Ω 5Ω 10Ω ±30V ±27V 1.6A 1.0A 1.7A 1.0A 1.7A 1.0A 1.8A 1.1A 2.0A 1.1A 5.0A 1.2A 5.0A 5.0A 2.7A 2.7A ±24V ±21V 2.0A 1.2A 2.1A 1.3A 2.2A 1.3A 2.5A 1.4A 5.0A 1.5A 5.0A 5.0A 4.2A 4.2A 2.1A 2.1A ±15V ±12V 3.3A 2.0A 3.8A 2.2A 4.8A 2.3A 5.0A 5.0A 4.0A 4.0A 3.0A 3.0A 2.4A 2.4A 1.2A 1.2A ±12V ±9V 4.2A 2.5A 5.0A 2.9A 5.0A 3.4A 4.5A 4.5A 3.0A 3.0A 2.2A 2.2A 1.8A 1.8A 0.9A 0.9A ±9V ±6V 5.0A 3.4A 5.0A 4.5A 5.0A 5.0A 3.0A 3.0A 2.0A 2.0A 1.5A 1.5A 1.2A 1.2A 0.6A 0.6A RDM-Apps 2

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6 JP2 & JP3: Bias Select jumpers: Bipolar Operation: Class AB low distortion high BW operation. Unipolar Operation: Class C operation. RDM-Apps 5

7 Gain / Offset Calibration Procedure: Required equipment: 1.) An accurate ±10vdc voltage source. 2.) A current meter with accuracy better than 0.5% of the CSE full current range output. Required Conditions:: 1.) CSE Module must be jumpered for Analog Voltage Control Mode ( JP1 pins 2-3 ). 2.) CSE Module must have required power to both the Control Circuit and the Power Output Circuit as shown in the Block Diagram. 3.) Connect voltage source to CSE module voltage input (Vin) connector. 4.) Connect a 1ohm 10W resistor to the output (Load) connector of the CSE module. 5.) Correctly apply your current meter to the Load so you correctly measure the current through the Load. 6.) Allow CSE module to warm up for at least 1 min. before continuing to the procedure. Procedure: 1.) Use your voltage source to apply 0.00V to the CSE voltage input (Vin) connector. Adjust Offset potentiometer until the CSE module current output (current meter) reads zero amps within 0.5% of the CSE full range output. 2.) Apply +2.5VDC to the CSE voltage input and adjust the Gain potentiometer so the output current is 2.5A. Conversely, a -2.5VDC input should result in a -2.5A output. Note: the Voltage Input to Current Output ratio must be 1V/A. Note(s): you will probably have to repeat procedure steps 1 and 2 a couple of times to assure proper calibration. If the Gain adjustment potentiometer is set to one of the extreme top or bottom extents extremely high or low gain states can occur which may cause confusion when making sequential offset and gain adjustments. Also, we advise you adjust the gain using input voltages that are mid-range values. RDM-Apps 6

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