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HiTech's avatar
HiTech
Explorer
Feb 23, 2013

Initial test manual home brew $8 MPPT controller

The $8 (plus shipping) laptop DC to DC Power Supply (i.e. the guts of a laptop power supply) quick initial results: Early morning sun it puts out a few hundredths of an amp into the battery but i...
Salvo's avatar
Salvo
Explorer
Feb 24, 2013
The knob you would want to twist controls output current. That type of control doesn't exist on your dc/dc converter. Short of a total converter redesign, it's impossible to obtain maximum power point control.

Sal

HiTech wrote:
The closed loop control is a human twisting a knob until watts are max, by reading a watt meter. Repeat as necessary.

Jim

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