This circuit can be used in a signal level indicator with LEDs. The circuit is from an Electronics Now dated January 1996. The power supply must be dual.
This circuit was obtained from ancient documentation using transistors of the time. The circuit...
I found this circuit in an old Argentine publication from 1973. The components are no longer...
This ammeter measures currents in 5 ranges from 50 uA to 0.5 A using a 40 uA instrument, which can be...