Based on a PLL 567, this circuit serves as a receiver for the CB9574E circuit. S tuning is done in R1 and it is used for frequency modulated signals.
This circuit uses a piezoelectric transducer to produce sounds like a buzzer. Frequency is...
This sophisticated sinusoidal audio signal generator uses a Wien bridge configuration with an...
This 7400 TTL circuit has a memory, keeping the LED on when a pulse is detected. The circuit must be...