hat
Ovèrvoltaj: mòd echèk Sa rive si vòltaj a pwodiksyon ale pi wo a valè a dc espesifye, sa ki ka enpoze twòp vòltaj dc ki domaj sikui yo chaj. Tipikman, elektwonik charj sistèm ka kenbe tèt ak jiska 20% ovèrvoltaj san yo pa transfere nenpòt domaj pèmanan. Si sa a se yon konsiderasyon, chwazi yon rezèv pou ki kapab redwi risk sa a. Anpil founiti gen ladan ovèrvoltaj pwoteksyon ki vin rezèv la nan si vòltaj a pwodiksyon depase yon kantite lajan ki espesifye. Yon lòt apwòch se yon dyòd a jonksyon ZENER levye ki fè ase kounye a nan papòt la ovèrvoltaj konsa ke li aktive aktyèl la pouvwa-ekipman pou limite epi li fèmen.
eng
Overvoltage: This failure mode occurs if the output voltage goes above the specified dc value, which can impose excessive dc voltage that damages the load circuits. Typically, electronic system loads can withstand up to 20% overvoltage without incurring any permanent damage. If this is a consideration, select a supply that minimizes this risk. Many supplies include overvoltage protection that turns the supply off if the output voltage exceeds a specified amount. Another approach is a crowbar zener diode that conducts enough current at the overvoltage threshold so that it activates the power-supply current limiting and it shuts down.