caption: POWER SYSTEM This slide shows a block diagram of the remote power system. A 45 Ah lead acid battery is charged by a second hand 33 W solar panel.
exif: {"Image DocumentName": "POWER SYSTEMThis slide shows a block diagram of the remote power system. A 45 Ah lead acid battery is charged by a second hand 33 W solar panel.", "Image ImageDescription": "The switched mode controller has 2 feedback loops. The first of these senses the output voltage, and backs off the charger when the battery terminal voltage reaches 13.8 V. The second loop senses the input voltage from the solar panel, and backs off the charger when the panel voltage is below 13.3 V. For this type of solar panel, maximum power is obtained when sufficient current is drawn to drop the terminal voltage to between 13 and 14 V. If the load current is too great, the terminal voltage drops off very quickly, and the power supplied is less than optimum. The solar power system has been working well since it was first installed in April of this year, even during winter months. (It should be said that the solar budget is fairly conservative, as the system is rarely used for more than an hour per day) NEXT.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}