The integrated circuit used in this' 90s amplifier is not very common today. The supply is 24 V, the gain is 50dB and the input resistance is 100 k. The circuit is from an old circuit manual.
of the National Semiconductor of 1994. The same technique can be used with other operators and the...
This is an interesting configuration of the LM317 voltage regulator found in an EDN from the 90s....
This circuit is from the datasheet of STMicroelectronics, being indicated for the voltage...