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How to build a hybrid solar/wind energy harvester?

Green4 charge controller: wiring diagrams part 2

Wiring diagram: wind turbine to dump load In contrast to solar panels, a wind turbine can’t be disconnected in case it generates too much power. We need to brake it by attaching a load to it. However, wind power can’t always flow through the charge controller: high volts and/or amps might damage the internal circuitry […]


Green4 charge controller: wiring diagrams part 1

Introduction Instead of endlessly listing requirements and specifications, we prefer to demonstrate the architecture of our Green4 charge controller by means of wiring diagrams and other illustrations. The Green4 is designed to be a versatile device that enables you to evaluate different charge controller architectures. Call it a charge controller emulator. There are several reasons […]


Charge controller high-side / low-side wiring diagrams – part 2

Connection scheme for low-side switching In comparison to the high-side wiring diagram we saw in part 1, the connections for low-side switching are the other way around: all ‘+’-s are connected (instead of all ‘-‘-s), and the (power) switching devices are ‘below’ the loads (instead of ‘above’). In order to better explain this diagram, we need […]