In the figure we have the way to implement a sinusoidal oscillator with the 4093 IC. The component values are given by the table. The circuit is from a Popular Electronics from the 90s.
This circuit uses two Raytheon RC4558 operational amplifiers that are similar to the 741. The...
This audio amplifier circuit is from Ibrape's technical documentation from the 70's. The BC177 can be...
This progressive circuit has a lock allowing coded activation. We found this configuration in...