battery power supply considerations n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Battery & Power Supply Considerations PowerPoint Presentation
Download Presentation
Battery & Power Supply Considerations

Loading in 2 Seconds...

play fullscreen
1 / 12

Battery & Power Supply Considerations

3 Views Download Presentation
Download Presentation

Battery & Power Supply Considerations

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Battery & Power Supply Considerations by Prof. Bitar

  2. Q1: What Customer Requirements often affect the choice of power supply? • Stationary or Portable • Operation Time • Temperature Range of Operation • Size / Shape / Weight Requirements

  3. Q1: What System Requirements often affect the choice of power supply? • Operating Voltage(s) • Voltage Tolerances (+/- 5%, 10%, etc) • Current Requirements

  4. Example: Proximity AlarmGoes off if someone is in your space! IR Sensor & LED Op-Amp Gain / Filter Micro- Controller Power Transistor Vibration Motor

  5. Voltage and Current Requirements per Component Q: Bases on these specifications, what operating voltage should we choose? Hmm… Q: What current must be supplied?

  6. What voltage do we operate at? • Find a practical voltage that all components can function at. • Not always possible. • May require choosing a voltage larger than the largest requirement and REGULATING down to the smaller values. • May require finding different components.

  7. What current is required? • How do you determine the amount of current that a power supply or battery needs to provide?

  8. If batteries are required, what must be considered? • Voltage Range (Full Charge to Discharge) • Number of Cells Required • Battery Life (ie. mA Hr Capacity) • Rechargeable vs. Non-Rechargeable • Chemistry (Alkaline, Zinc, Lead Acid, NiCd, NiMH, etc…) • Temperature Range • Size / Weight / Cost

  9. Battery Specifications

  10. Battery Capacity

  11. Battery Discharge(Under Constant Current Load)

  12. If an AC to DC power supply is required, what must be considered? Input Voltage (120VAC, 60Hz …) Output Voltage (No Load and Full Load) Maximum Output Current Line & Load Regulation Voltage Ripple Size / Weight / Cost