Every signal input, and every output, has an impedance–this "impedance" represents the relationship between voltage and current which a device is capable of accepting or delivering. But it's hard to ...

Then the crafty pharisee asked, "But what is the input impedance at the negative input that A1 has to drive? That is R1, right? Such as 1 kΩ." The teacher nodded.

The 10K input impedance was probably the impedance of the input amplifier circuit, not the sub driver itself...therefore it's just a normal, low-current line-level signal from the soundcard to the ...

Let’s break it all down. First of all, impedance is the frequency-dependent sister of resistance, so for intuition we’ll first work through the cases of purely resistive impedance.

To maintain dc-dc converter stability, power-system designers typically operate under the assumption that input-source impedance should be small compared to the converter's input impedance. But ...

When the design specification for a line receiver calls for high performance, an impedance-balanced input or predictable gain, the cross-coupled double-balanced configuration is a worthy contender.

Since the input impedance and gain are set by just four external resistors, this new active balun approach provides an extremely flexible solution spanning a wide range of performance and end ...

When shopping for loudspeakers or headphones, most consumers don't even look at the impedance of the products they are considering. Do they need to? What is Impedance? Glad you asked.