In the development of some types of solar cells, such as electrochemical cells, aging measurements are crucial. Cells should be long-term test in a loaded condition and periodically measured their characteristics.
For this purpose, we have developed a special tracker of the maximum power point for power up to a few hundred mW. The circuit in addition to tracking also allows operation in open circuit, short circuit and at constant voltage.
There are six channels available at the moment, and in development is a multi-channel meter.