The circuit shown is from the National Semiconductor Linear Applications Handbook of 1994. using ADC0808. The circuit can handle data from up to 4 transducers with an 8-bit output.
This circuit was found in a 90s Hands-On Electronics. When a signal appears at the headphone...
This circuit was found in an old Radio Electronics, but can still be assembled as the components are...
This circuit can generate signals of frequencies up to 1 or 2 MHz, tuned in the capacitor. The...