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 protection circuit for symmetrical 28 V power sources was found in a 1968 EEE documentation. The...
This Japanese commercial medium and short-wave radio uses 7 transistors and tunes the range from...
An application for the previous circuit (CB109) is shown here. The central frequency is determined by C and...