Dialing detector (CB9304E)

This circuit was found in GE documentation from the 90s. The circuit can be used as a shield for telephone lines.

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Cascading the 4510 (CB181E)
Figure bellow shows how the 4510 can be cascaded for counts higher than 10. The circuit shows the...
Graphic Equalizer 741 (CB25841
E) In this circuit we have the details of a section with the others repeating with the values...
Sharp Cut Filter (CB6732E)
Found in American documentation from 1968, this circuit has an acute cut-off of the frequency to...