LED lamp

A lamp comprising:

• a full-wave rectifier for convert alternating current (AC) to direct current (DC);
• a surge protection device (SPD) electrically connected to the full-wave rectifier for protecting the lamp from voltage spikes;
• a plurality of light-emitting diodes (LEDs) connected in series and electrically connected to the SPD;
• a microprocessor electrically connected to the SPD;
• a plurality of metal-oxide-semiconductor field-effect transistor (MOSFET) start circuits connected in series and electrically to the microprocessor, the MOSFET start circuits being configured to switch electronic signals;
• and
• a plurality of resistors each electrically interconnected the LED and the MOSFET start circuit;
• wherein in response to a normal DC supplied from the SPD, the microprocessor creates a pulse-width modulation (PWM) signal to activate the MOSFET start circuits which in turn initiate operations of the LEDs via the resistors respectively;
• and
• wherein in response to an abnormal DC having voltage spikes supplied from the SPD, the microprocessor deactivates the MOSFET start circuits which in turn direct the DC through the resistors rather than supply the DC to the LEDs via the resistors respectively.