Inside such a probe you’ll usually find a fancy op-amp working as a differential amplifier, and for correct operation they require careful adjustment to null out DC bias and achieve the maximum ...

PCB Spark gap for primary ESD protection It implements a classic instrumentation amplifier ... For probing differential signals, it is possible to use a pair of probes, one for each signal ...

The DX-3 is also a pre-amplifier and can be connected to a power amplifier or pair of active loudspeakers for those looking to minimize the ... the DX-3 also includes custom-engineered and tuned low ...