High-speed peak detector (CB9699E)

This circuit was obtained from an American documentation from the 80s. Integrated circuits are from that time and are not easy to find today.

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100 Hz High Pass Filter with the 741 (CB11463E)
The circuit presented was obtained from an Electronics Now magazine from February 1995. The...
Operational Triangular Generator (CB13242E)
This circuit, found in an old publication, uses operational amplifiers from National Semiconductor that are...
1.5 V Flasher LM3909 (CB14276E
) This is the original application of the National Semiconductor LM3909 low consumption pulsator. The LED...