Flickering candle lamp

An electric lamp for simulating a candle comprising:

• a housing;
• an electric circuit mounted in said housing and including an electric light bulb, a battery mounted in said housing and connected to said electric circuit for supplying energizing power to said electric circuit, said electric circuit including:
• switching means for intermittingly applying said energizing power to said light bulb with a selected duty cycle to establish an average voltage across said light bulb at a level substantially less than the voltage of said battery;
• a feed back loop connected to said switching means for establishing the duty cycle of said energizing power intermittingly applied to said light bulb;
• and signal generating means connected to said feed back loop for introducing a flicker signal to said feed back loop to modify said duty cycle and the average voltage of said energizing power intermittingly applied to said light bulb on a pseudo-random basis to introduce a flicker into the light output of said light bulb;
• said signal generating means generating said flicker signal at a frequency sufficiently low to render the flicker in the light output of said light bulb visible to the human eye, and said generating means comprising a plurality of independent oscillators each operating at a slightly different frequency and an output network for summing the output signals from said oscillators.