DEVICE FOR IDENTIFICATION OF DIAMONDS AND CUT DIAMONDS Russian patent published in 1994 - IPC

FIELD: analysis of materials. SUBSTANCE: device has chip of transistor, which is used as source of heat and temperature pick-up, tag, which is made of material having high thermal conductivity and which provides connection between chip and object to be identified, recording unit and power supply. In addition unit for stabilization of transistor temperature is introduced. Transistor is inserted as controlled power supply which is connected to unit for temperature stabilization and power supply. Recording unit is connected to output of unit for temperature stabilization. EFFECT: increased functional capabilities. 3 cl, 3 dwg