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* 22B External High Level Control Input (requires internal jumper and trim) | * 22B External High Level Control Input (requires internal jumper and trim) | ||
Custom connection solder pads | Custom connection solder pads are available on the left plug-in slot, which is otherwise used only for hte associated pass transistors in the mainframe. | ||
==References== | ==References== | ||
* Designs by the Masters – ±20 V, 5 ns, 50 Ω Amplifier (detailed discussion of the PG508 output stage). Horowitz & Hill, Art of Electronics - The x-Chapters, p.150+ | * Designs by the Masters – ±20 V, 5 ns, 50 Ω Amplifier (detailed discussion of the PG508 output stage). Horowitz & Hill, Art of Electronics - The x-Chapters, p.150+ |