This circuit is from Motorola's 1990 Linear Databook. The transistors allow equivalents and the output power depends on the supply voltage. The power supply must be 30 V symmetrical.
This circuit is from the 1983 Intersil Databook. The ADC0801 and 0804 are low-cost AD converters. They...
This is the receiver for the previous circuit, also found in 90s Radio Electronics. The circuit...
In the figure we have the way to increase the current capacity of an operational amplifier. The...