The LED fixture shall be operated at constant and carefully regulated current levels. LEDS shall not be overdriven beyond their specified nominalvoltage and current.
LED灯具须在稳定的、精心调控的电流强度下运行，不应在超过其额定电压或额定电流的情况下超负荷运行。
2
The NiZn cell has a nominalvoltage of 1.65V, which is 30% higher than that of a NiMH cell (1.25V nominal). When freshly charged, its terminal voltage is even higher at 1.85V!
Undershoot Undershoot refers to the amount by which voltage or frequency drops below the nominal value as the voltage regulator or governor responds to changes in load.