This circuit was found in a March 1988 Radio Electronics. The voltage scale is set at R3. 19 LEDs are used in this indicator circuit.
With this circuit we can present an 8-bit binary information from a software on an 8-LED display. The...
The accuracy of this circuit depends on the resistors connected to the band selection network. The...
This oscillator produces an audible signal on a piezoelectric transducer. The frequency is...