This General Electric circuit is from the 80's. The PUTs used in this meter are not common components today.
We found this circuit in a 1992 documentation. It can still be easily assembled today, as the...
This circuit was found in a Hands-On Elctronics from 1987. The field effect transistor admits...
Found in a 90s Electronic Design, this circuit can generate sinusoidal signals from 0.1 Hz to 25...