1. DC Power Supplies Intro to ECSE Analysis K. A. Connor
Mobile Studio Project
Center for Mobile Hands-On STEM
SMART LIGHTING Engineering Research Center
ECSE Department
Rensselaer Polytechnic Institute
Intro to ECSE Analysis

2. Outline Batteries Fixed DC Supplies Variable DC Supplies
Current Limited Voltage Supplies
What Else?

3. + + + Batteries 9V Battery & Connector
Red is plus (+) and Black is minus (-)
Can be either a +9V (Black grounded) or -9V DC (Red grounded) supply + + +
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4. Batteries Many Types – All with ± Symbols for Polarity
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5. + Generic DC Supply Black Box Circuit Symbol Black Box Output
Note: Can always be connected in either direction to be positive or negative source.
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6. Fixed Power Supplies
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7. Bench Top Supplies Single or Multiple Output Fixed or Variable Output
Current Limiting Voltage Supply
Nearly All Can be Connected in Either Direction
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8. HP E3631A
Again, the 3 power supplies can be connected in either direction. 3 1 2
Case Ground
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