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Diodes are two terminal electronic components which allow current to flow in one direction. This diode can be used to block the flow of electric current from other parts of an electrical circuit. These types of silicon diodes are basically known as Blocking Diodes during the usage with a solar panel. Bypass Diodes are connected in parallel with either a single or a number of solar cells to prevent the solar cells overheating by sunlight. By providing a current path around the bad cell, these types of diodes also protect the partially shaded solar cells from burning out. Blocking diodes are used differently than bypass diodes. Bypass diodes in solar panels are connected in “parallel” with a solar cell or panel to shunt the current around it, whereas blocking diodes are connected in “series” with the PV panels to prevent current flowing back into them. Therefore, blocking diodes are different than bypass diodes. These types of diodes are physically the same in most cases. In order to se