This variable frequency oscillator with the 4093 was found in a Popular Electronics from the 90s. The table gives the component values for various frequency ranges.
The circuit below is a 1 mA current drain using a transconductance operational amplifier. The...
This circuit was found in a NASA documentation from the 1980s. Component values are application...
This circuit generates signals with two waveforms. The circuit is from a documentation from the...