We found this universal preamplifier circuit in a March 1994 Electronics Now. It has several types of equalization depending on the signal input.
This high-gain digital amplifier uses general-purpose transistors. The supply voltage is logic...
Simple timers can be designed using inverters or any other gate that can be connected as inverter. Figure...
We found this circuit in the National Semiconductor Audio Handbook of 1977. The circuit produces...