Keithley 642 Restoration Part 1
Автор: RetroAmpere
Загружено: 2025-08-30
Просмотров: 803
Описание:
In this video on @RetroAmpere we restore a very rare and collectible electrometer—the Keithley 642. While it already employs a low-leakage MOSFET at the input, it retains features of older technology, including a highly complex low-leakage input relay and sapphire insulators. It lacks active input guarding, so it relies fully on the low-leakage input-stage design
#testequipment #vintageelectronics #testequipmentrestoration #keithley #K642 #electrometry #restoration #electronics
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