Arduino Power Supply v18.08: Difference between revisions
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[https://docs.google.com/spreadsheets/d/1rM4gHXJqRp5V0_cIwsCIK331e8OfVKSpQ-Ua2Od64wc/edit?usp=sharing edit] | [https://docs.google.com/spreadsheets/d/1rM4gHXJqRp5V0_cIwsCIK331e8OfVKSpQ-Ua2Od64wc/edit?usp=sharing edit] | ||
=Requirements= | =Design= | ||
==Requirements== | |||
* Up to 300 mA supply (200 mA would likely be enough) | * Up to 300 mA supply (200 mA would likely be enough) | ||
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* Stable voltage reference of less than 5V | * Stable voltage reference of less than 5V | ||
=Research= | ==Research== | ||
Power requirements for Arduino Mega ([https://forum.arduino.cc/index.php?topic=5536.0 usually <70 mA], [https://www.open-electronics.org/the-power-of-arduino-this-unknown/ 200 mA max]) and RepRap Discount Smart Controller ([https://reprap.org/forum/read.php?219,545103 40-100 mA?]). 300 mA max to power control and display circuits. | Power requirements for Arduino Mega ([https://forum.arduino.cc/index.php?topic=5536.0 usually <70 mA], [https://www.open-electronics.org/the-power-of-arduino-this-unknown/ 200 mA max]) and RepRap Discount Smart Controller ([https://reprap.org/forum/read.php?219,545103 40-100 mA?]). 300 mA max to power control and display circuits. | ||
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[http://www.ti.com/tool/PMP11064 High Efficiency 400W AC/DC Power Supply Reference Design] | [http://www.ti.com/tool/PMP11064 High Efficiency 400W AC/DC Power Supply Reference Design] | ||
=Electronics Design= | ==Calculations== | ||
<html><img src=https://wiki.opensourceecology.org/images/2/2e/Ardpwrcalc.jpg width=500 height=300></html>[https://wiki.opensourceecology.org/images/2/2e/Ardpwrcalc.jpg] | |||
==Electronics Design== | |||
'''''These designs are not guaranteed to be safe or functional. Use at your own risk.''''' | '''''These designs are not guaranteed to be safe or functional. Use at your own risk.''''' | ||
Revision as of 17:42, 18 August 2018
Design
Requirements
- Up to 300 mA supply (200 mA would likely be enough)
- 7-12 V DC output
- 120 V ac input
- Stable voltage reference of less than 5V
Research
Power requirements for Arduino Mega (usually <70 mA, 200 mA max) and RepRap Discount Smart Controller (40-100 mA?). 300 mA max to power control and display circuits.
Drawing Power from Grid without Transformer for *Low Power* Applications
Precise voltage measurement with the Arduino
High Efficiency 400W AC/DC Power Supply Reference Design
Calculations
Electronics Design
These designs are not guaranteed to be safe or functional. Use at your own risk.
Bill of Materials
Cac: CAP FILM 10UF 5% 400VDC RADIAL
Cac discharge resistor: 1MOhm UPL1.064
Bridge diodes (x4): UPL4.004
Filter capacitor: CAP ALUM 680UF 10% 10V RADIAL
Output zener: DIODE ZENER 9.1V 5W AXIAL
Voltage reference: IC VREF SHUNT 4.096V TO92-3
Voltage reference resistor: RES 5.6K OHM 5W 5% AXIAL
Total cost of components ~$10