The integrated circuit of this amplifier is not very common today. The output transistors can be TIP31 and TIP32 in heat radiators. The circuit is from the 1977 National Semiconductor Audio Handbook.
Found in an 1989 R-E Experimenters Handbook, this circuit produces several sound effects that can...
In this circuit, the current in solenoid X1 can be adjusted and its intensity measured to the...
This circuit is designed to obtain a negative voltage from a positive supply for circuit...