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For example, a correlation measurement between two receivers at different distances would yield the kind of data you're looking for. …

A passive probe is more than just a 9 MΩ resistor and a piece of coax. First of all, since both the input of the scope and the coax have significant capacitance, there is a compensating capacitor in p …

A small synchronous motor attached to a gear train — i.e., an electric clock — functions as a cycle counter. By counting the number of cycles in a known interval (established by some other timebase), …

... it counts the number of pulses at the output of the shift-register No, it uses the shift register U2 to read out the binary value captured in U1 in serial format. That count, divided by the gate …

Do you understand the concept behind using the Prony Brake for measuring torque? You can use electromechanical feedback (a simple servomechanism) to maintain constant torque at arbitrary speeds.

I once needed to get an idea of the effective inductance of the primary coil of a custom rotary transformer, so I could get an estimate of its magnetizing current. Since I was driving it with a squar …

Two hints: A voltage source and two resistors is called a "voltage divider". Calculation is straightforward. \$K\$ is a "calibration constant". You adjust its value until the reading matches the tem …

What you are describing IS time-of-flight, if I'm understanding what you're saying. You're just using the time-of-flight to control the period of an oscillator (by emiiting a new pulse each time you …

Assumptions: A "message" is a collection of transitions, with some sizable gap between messages that contains no transitions. The clock period is smaller than the shortest gap between signal transit …

That procedure will tell you which meter happens to be better calibrated for that particular value of current at that moment in time. The manufacturer's specifications (assuming they aren't lying) co …

They calculate it by knowing the tolerances of all the components they used, and knowing how much each component influences the overall measurement. … It isn't a simple proposition, and sometimes it's more expedient to do a Monte-Carlo simulation of the circuit that randomizes the component values and do a statistical measurement of the results. …

It really is implicit in the math, and has nothing to do with any particular measurement method. But you do need to understand how the measurements you're making relate to the theory. …

In this setup, the mutual capacitance among any given pair of windings will be the same as any other, which simplifies the measurement problem. …

The gate capacitance of a MOSFET is a more complicated topic than a lot of people realize. It depends very strongly on the operating conditions of the device. This makes sense — the capacitance we're …

In a nutshell, the first opamp and the transistor work together to draw a current through the 100Ω resistor such that the voltage drop across it matches the voltage drop across the 0.01Ω sense resisto …