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RP-type ideal diode circuit

2014-11-10 01:28  
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Clamping circuit is difficult to achieve in non-inverting idealized diode circuit. Inevitably the output can be saturated on the negative potential. Thus, the general idealized diode is constituted by the inverting circuit shown in Figure 1. In this circuit, when the input is positive potential, diode D1 is conducted, and OP amplifier output is almost saturated because of the diode forward voltage (-VF). At this point, because of -VF, the diode D1 is against the bias, and the circuit output resistance ro is 10kΩ.