Is there a modern discrete component alternative to the JFET as preamplifier?

Why does my waveform start ahead of the trigger?

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What does this op amp/transistor circuit do?

Meaning of FB symbol in schematics?

how to reduce DC voltage using resistors?

How can PCB trace have 50 ohm impedance regardless of length and signal frequency?

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How is saltwater able to conduct electric charge between two wires?

Does a capacitor store charge?

How to calculate the power dissipation in a transistor?

Is soldering wires directly on a NiMh battery safe?

What is the "DC OK" relay used for on a power supply?

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