This analog volt-ammeter was found in an Electronics World of 1968. It makes use of a 0-1 mA analog milliammeter. Accuracy depends on the components.
This circuit includes a protection system for the previous circuit (CB19302E) in case of a short...
With this simple circuit we can control the brightness of a set of LEDs of any color through...
This circuit was found in a 1978 British magazine, but it can still be mounted by simply replacing the...