20 MHz filter (CB6735E)

This 20 MHz bandwidth circuit was suggested by the National Semiconductor in 1970 documentation. Modern equivalent operational can be used.

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Decade Counter Using the 4017 (CB172)
The basic configuration for a 4017 when used as a decade divider with one-of-ten decoded outputs...
Negative Line Current Monitor (CB5244E)
This circuit monitors the current in the negative line. The circuit is from a 2005 Linear...
Inverter Comparator with hysteresis (CB5080E)
This circuit was obtained in an old American manual. The circuit is valid for any operational. The...