General Electric suggests this circuit in an 80's documentation. The circuit makes use of PUTs that are not common components today. Note the timing components that may change.
In the figure we have the circuit of an amplifier for alternating signals with 10 times gain,...
We found this circuit in a documentation on active filters from 1977. The gain of this circuit is...
Figure bellow shows a ring oscillator using five inverters of a 4049. [The circuit operates only...