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In this video we answer the question: What are blocking and bypass diodes used for in solar panels?Bypass diodes prevent electrical losses within a solar panel when it’s partially shaded. Most solar panels have blocking diodes in them, so external diodes are not usually needed, except for a few instances. If a solar panel wired in series with another is shaded, a bypass diode may help route the power around it. A blocking diode is used to prevent power loss out of the batteries, particularly at night. When using a solar charge controller, blocking diodes usually are not needed. If panels are wired in parallel sharing the same charge controller, or if two different voltage power sources are charging a battery, then a blocking diode may help route power into the battery..
19 авг 2024