ADDITION OF TWO CLAMP DIODES PROTECTS OP-X9 DEVICES AGAINST OUTPUT PHASE REVERSAL 20Vp-p oP291 TIME-200uS/DIV Figure 7.7 For those amplifiers where external protection is clearly required against both overvoltage abuse and output phase reversal, a common technique is to use a series resistance, Rs, to limit fault current, and Schottky diodes to clamp the input signa to the supplies, as shown in Figure 7.81 0 ADDITION OF TWO CLAMP DIODES PROTECTS OP-X91 DEVICES AGAINST OUTPUT PHASE REVERSAL Figure 7.7 For those amplifiers where external protection is clearly required against both overvoltage abuse and output phase reversal, a common technique is to use a series resistance, Rs , to limit fault current, and Schottky diodes to clamp the input signal to the supplies, as shown in Figure 7.8