The circuit shown is from Motorola's 1990 Linear Databook. Shaded components are optional. The characteristics of the coils are given next to the diagram.
This circuit produces modulated tones in a loudspeaker. The effects can be adjusted by the...
This RF amplifier step has a dynamic range of 140 dB and can amplify signals from 0.5 to 40 MHz....
This oscillator for Morse code training was found in a Popular Electronics from the 90s. The...