This low power bass booster is from the 1977 National Semiconductor Audio Handbook. The circuit is powered by 6 to 9 V voltages and the feedback determines the enhanced bass range.
This National Semiconductor circuit uses integrated circuits that are uncommon today. The circuit...
The circuit in the figure is very interesting because it simulates an SCR triggered by light. When...
This circuit is from a 1998 Electronics Now and can be easily assembled since it uses a common...