Additional Pull Pull (CB6119E)

This stage was found in a 1964 Electronic Design. The transistors are of the time and the shape of the signal obtained is shown in the diagram.

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AC and DC High Current Meter (CB4463E)
This is a shunt circuit to be used on a multimeter, expanding its scales to measure high currents....
Output stage with the AC117 (CB4278E)
This step is also suitable for the AC188k and SK3004 transistors and was found in a 1980s...
High Quality Preamplifier (CB823E)
This high quality audio preamplifier uses three bipolar transistor and is powered from 24 V...