Automatic Test Equipment (ATE)

Designed two cards for a 48-channel Automated Accelerated Characterization Test Station (AACTS) that distributed power and signals for low noise measurement over tri-axial controlled-impedance paths embedded in the circuit card. The station tested RF semiconductors such as discrete (MESFETs, HBTs, Diodes, etc.), monolithic microwave integrated circuits (MMICs), hybrid microwave integrated circuits (HMICs) at temperatures up to 250 degrees C. Involved concept development, electronic circuit design, system engineering, block diagrams, schematics and printed circuit card (PCB) layout.

Designed multi-function 20 cell 4 Farad ultracapacitor tester with a 5A peak discharge per cell (100A fully loaded). It is capable of manual (pushbutton) or programmable automatic charge/discharge cycling and automatic leakage testing through a programmable data logger. It also has the flexibility to be connected to a Bitrode cell tester. Involved concept development, electronic circuit design, system engineering, block diagrams, schematics and printed circuit card (PCB) layout.

Designed a multi-function 78 cell tester for stacked 10 Farad ultracapacitors (PC10). It is capable of manual (pushbutton) or automatic operation through a programmable data logger; charge/discharge cycling; automatic leakage testing; and user selectable parallel or series modes. Involved concept development, electronic circuit design, system engineering, block diagrams, schematics and printed circuit card (PCB) layout.

Designed a 256 cell 10 Farad ultracapacitor (PC10) tester card that resided in 8 rack pneumatic powered tester. The 16" by 18" card was capable of manual or automatic leakage testing of capacitors through a PC based data acquisition system. Involved electronic circuit design, schematics and printed circuit card (PCB) layout.

Modified existing Automatic Test Equipment (ATE) that charged capacitors to discharge them. The tester tower had eight levels; each level tested 256 10 Farad capacitors. Re-routed power, modified circuit cards, corrected the control panel to add the discharge feature and notify the user of charging status. Involved reverse engineering, redesign and some electronic circuit design.

Developed and built an over-voltage protection card that protected Ultracapacitor testers from the test power supply. It could handle a 20A load and had a fully adjustable trip point. Involved concept development, electronic circuit design, system engineering, schematics, test and integration.


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