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Is the 555 necessary here, or can I just use an op-amp? - Electrical Engineering Stack Exchange
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555 Timer
Need help with school project; photocell, op amp, and 555 timer | Electronics Forums
Copy of 555 Timer - Op-Amp VCO (Square, Triangular, and Exponential Output Waveforms) (1) - Multisim Live
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How does NE555 timer circuit works | Datasheet | Pinout | ElecCircuit.com
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IC 555/IC 741 tester - theoryCIRCUIT - Do It Yourself Electronics Projects
A stable negative supply for an op-amp (using 555) - Electrical Engineering Stack Exchange
How does NE555 timer circuit works | Datasheet | Pinout | ElecCircuit.com
Schmitt trigger provides alternative to 555 timer - EDN
Schmitt trigger provides alternative to 555 timer - EDN
555 Timer as an Amplifier | Low Power Audio Amplifier using 555 Timer
10 Best Timer Circuits using IC 555 - Homemade Circuit Projects
555-based class-D headphone driver makes great practice amp
555 NOISE BUTTON/ OP AMP - Electrical Engineering Stack Exchange
Simple voltage to frequency converter
1. Study of OP AMPs - IC 741, IC 555, IC 565, IC 566, IC ...ece.?Short
