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Touch sensitive energy-saving lamps

Published on Mar 14 2011 // Device application circuits

The device working principle of the circuit shown in Figure 4. R1 and the transistor VT constitutes a touch circuit, R2 and C is the delay elements, according to 1.1R2C estimated delay time. T1, T2 is a metal, can be installed at each end of a hallway, and the common connected to the base of VT. Touch metal with your fingers, lights that light up, people left, the lighting automatically turns off for some time.

Touch sensitive energy-saving lamps.