This volume compressor uses unusual components today. The circuit was found in documentation from the 1980s. The circuit is for audio signals. The LS150 is a high-performance operational amplifier.
We found this ionizer circuit in a Radio Electronics magazine from May 1971. The high voltage...
This well-designed bistable configuration is for educational purposes. We found it in the...
This high input impedance circuit makes use of two operational ones that are still common. The...