The presented circuit measures currents and voltages with precision that depends on the tolerance of the resistors used. The instrument is a microammeter and more scales can be added.
This instrument was obtained in a documentation for radio amateurs of 1976. The circuit measures...
This circuit decodes FSK signals with frequencies of 1070 and 1270 Hz and can be used in data...
We found this circuit for guitar training in an English documentation from 1989. The components are from...