Schematic
In:12V
Out 1: 12V for home router
Out 2: 5V 3A dc/dc module
Out 2: any voltage
C1: 16V 83(500/6)F
R1: 100 Ohm 2W or 330 Ohm 1W
D1: 3a schottky diode
Discharge chart: todo
Search adjustable buck dc dc Converter, example picture below.
From: http://www.learningaboutelectronics.com/...ulator.php
The run time for Raspberry Pi is 502s which is about 8 minutes.
Ref: https://www.omnicalculator.com/physics/work-and-power
This UPS is maintenance free (normal UPS needs battery which will be replaced regularly).
D1 and R1: £1
Supercapacitor 83F 16V: about £35
Finished photo:
In:12V
Out 1: 12V for home router
Out 2: 5V 3A dc/dc module
Out 2: any voltage
C1: 16V 83(500/6)F
R1: 100 Ohm 2W or 330 Ohm 1W
D1: 3a schottky diode
Discharge chart: todo
- Dc/dc module:
Search adjustable buck dc dc Converter, example picture below.
- Super capacitor example:
- Capacitor energy calculation:
From: http://www.learningaboutelectronics.com/...ulator.php
- Run time calculation
The run time for Raspberry Pi is 502s which is about 8 minutes.
Ref: https://www.omnicalculator.com/physics/work-and-power
This UPS is maintenance free (normal UPS needs battery which will be replaced regularly).
- The cost of component:
D1 and R1: £1
Supercapacitor 83F 16V: about £35
Finished photo: