100 kHz Oscillator (CB22379E)

This is the single-sourced version of the previous oscillator. Frequency can be changed by changing C1.

Private Telephone Line (CB16792E)
This circuit, found in a 1994 publication, allows the use of two common analog telephone sets on a...
Old Integrated Amplifier (CB6159E)
This 1967 General Electric circuit makes use of an array of 3 (integrated) transistors for an...
Amplitude Modulator (CB19820E)
This modulator circuit for low intensity signals is from old documentation. The integrated circuit...