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 amplifier with two transistors for analog instruments was found in a Raytheon publication from the...
With 8 to 30 V power supply, the output power depends on both the voltage and the load. The...
This circuit converts a signal from any waveform into a rectangular or square signal of the same...