This detector with ultra-low deviation was found in an American documentation from the 90s. Operational amplifiers are from that time. The power supply must be symmetrical.
Found in Motorola documentation from the 1980s, this circuit employs an integrated device from...
This input circuit for an oscilloscope was found in Radio Electronics from the 90s. The operating...
This circuit was found in Motorola documentation from 1968, using high power transistors and...