This filter, found in an old manual, has characteristics of reduced overvoltage given by the graph next to the diagram. Formulas for component calculations are given next to the diagram.
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...