Sunday, November 25, 2012

Quick Fundas: Op-amp# 5

A slight improvement to the circuit described previously in "Quick Fundas: Op-amp# 4" is to add a capacitor C1 in parallel with R3. The capacitor C1 and R3 should be chosen appropriately to filter out over-voltage glitches that mostly occurs during power-up.

Figure 1: Improved Over-voltage detection circuit with latch

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