* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Technical Approach
Audio power wikipedia , lookup
Stepper motor wikipedia , lookup
Power over Ethernet wikipedia , lookup
Spark-gap transmitter wikipedia , lookup
Mercury-arc valve wikipedia , lookup
Power factor wikipedia , lookup
War of the currents wikipedia , lookup
Immunity-aware programming wikipedia , lookup
Electrification wikipedia , lookup
Pulse-width modulation wikipedia , lookup
Electrical ballast wikipedia , lookup
Transformer wikipedia , lookup
Ground (electricity) wikipedia , lookup
Current source wikipedia , lookup
Electric power system wikipedia , lookup
Resistive opto-isolator wikipedia , lookup
Power inverter wikipedia , lookup
Variable-frequency drive wikipedia , lookup
Single-wire earth return wikipedia , lookup
Transformer types wikipedia , lookup
Amtrak's 25 Hz traction power system wikipedia , lookup
Power MOSFET wikipedia , lookup
Electrical substation wikipedia , lookup
Power engineering wikipedia , lookup
Distribution management system wikipedia , lookup
Power electronics wikipedia , lookup
Buck converter wikipedia , lookup
Voltage regulator wikipedia , lookup
Three-phase electric power wikipedia , lookup
Surge protector wikipedia , lookup
Opto-isolator wikipedia , lookup
History of electric power transmission wikipedia , lookup
Power supply wikipedia , lookup
Stray voltage wikipedia , lookup
Alternating current wikipedia , lookup
Switched-mode power supply wikipedia , lookup
Objectives The ISU Senior Design Laboratories have power supplies which the students can use to test their designs. However, these supplies are limited in number and capability. Therefore, the group will design and implement new power supplies for the Senior Design Laboratories. •Convert AC wall power to a constant DC voltage Functional Requirements •3 sets of voltage outputs •Voltage outputs of +1.5, +3.0, +4.5, +5.0, +6.0, +9.0, +12.0, +15.0, +18.0, and +24.0V Design Constraints General Background •Needs to be from $25 to $50 per supply •Inexpensive, reliable power supplies that can provide a wide range of voltages are needed to replace the present power supplies •Must provide voltage to within 1.2% of target voltage •Voltages should correspond to common battery voltages to provide accurate simulation •Must conform to UL or equivalent safety specifications Technical Problem Measurable Milestones •Must be able to provide three separate voltages simultaneously •Transformer construction •Power supplies must conform to safety specifications •Provide 1 voltage within ½% from 0 to full load •Voltages must remain with ½% of target voltage •Provide cell voltages within ½% from 0 to full load Operating Environment •Limit current to 1 Amp or less •Should be easy and convenient to use •Make voltages selectable •Power supplies will be used in indoor labs •Must be able to withstand small to medium amounts of mechanical stress and prevent catastrophic failure if a student connects the terminals backwards or shorts the supply out •Put all parts in robust case End Product Description Intended Uses and Users •Fairly lightweight and compact •It will be used in Senior Design Laboratories for testing products •Provide selectable voltages needed in any combination to within ½% •To be used by students/faculty with at least a basic understanding of electrical theory Assumptions •The supply will be used indoors at room temperature Limitations •The supply cannot provide more than 1 Amp per terminal •Want to keep production cost between $25 and $50 Technical Approach •Use transformer to get desired voltage •Put multiple taps on transformer to get other voltages •Regulate main voltage, others should follow •Limit current by controlling duty cycle 23% Item Estimated Cost Poster $50 Parts $50 Total $100 •Rectify: Convert AC signal to DC Peter 73 hours 26% Erik 77 hours Joel 63 hours 23% 28% Philip 65 hours Clients: Group May03-22 Team Members: •Dr. John W. Lamont •Peter Holm, CprE •Ralph E. Patterson III •Erik Johnson, EE Advisor: •Dr. Allan Potter •Joel Jorgensen, EE •Philip Schulz, EE •Test each combination of voltages over a wide range of loads, monitor actual voltage and current •Make sure selectors work properly