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Temperature-compensated diode input power detector circuit

2015-02-05 14:35  
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Temperature-compensated diode input power detector circuit
Temperature-compensated diode input power detector circuit
The figure shows the Temperature-compensated diode input power detector circuit. It increases the temperature to compensate the diode VD2 and can compensate temperature to rectified voltage on the diode VD1. Diode has a negative temperature coefficient. When the temperature rises, the pressure drop of the VD1 will reduce, as well as that of VD2. It ultimately remains constant for the output voltage. Compensated Uo, PIN and the error γ of the curve are as shown. The figure also points out the error curve under the ambient temperature of +25 ℃, -40 ℃ and +85 ℃.