This analog meter circuit was found in the September 1989 issue of Radio Electronics magazine. The source must be dual, and the table gives the resistors for the various scales.
This circuit is from the 1990 Motorola Linear Databook. The circuit can be implemented with other...
This circuit is from an Argentine publication from 1973. It generates a 100 kHz signal from a...
Found in Popular Electronics from 1969, this circuit uses a neon lamp from the time that had...