Fu De-hui, Zhao Yan-min. APPLICATION OF npnp Ga<sub>1-x</sub>Al<sub>x</sub>As LED WITH NEGATIVE RESISTANCE[J]. Chinese Journal of Luminescence, 1982,3(2): 84-89
Fu De-hui, Zhao Yan-min. APPLICATION OF npnp Ga<sub>1-x</sub>Al<sub>x</sub>As LED WITH NEGATIVE RESISTANCE[J]. Chinese Journal of Luminescence, 1982,3(2): 84-89DOI:
As LED with negative resistance has been prepared and applied to a new type of calling-setup in a hospital. This calling-setup appears to be superior to other types previously used. It enables the simplification of circuits and replacing relays and small lamps with the single device.