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16 votes

Is twisting a single ended signal with its own GND really useful?

Yes, it is better. Model the circuit as two transmission lines: one representing the differential mode (signal to GND wire), stacked on top of one representing the common mode (GND wire over GND ...
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6 votes

Is twisting a single ended signal with its own GND really useful?

It strongly helps when done right. Allow me to make a small story arc to explain my answer. The problem Ground planes are good dump-and-forget nodes for return currents at both high and low frequency ...
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5 votes

Ethernet transformer

Ethernet is a digital signaling standard. Pulses must be sent and received, over a modest distance (~100m), without consuming excessive power, avoiding random errors, and tolerating ambient noise (...
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4 votes

Is twisting a single ended signal with its own GND really useful?

We can distinguish two kinds of coupling, inductive and capacitative. Using balanced twisted pairs helps reduce inductive coupling. But the question is about unbalanced twisted pairs. It turns out ...
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3 votes

How to optimally decide modified square wave duty cycle for an inverter?

There are several considerations that govern the determination of an optimal duty cycle. Firstly, so that resistive loads work with no modification in power, the RMS voltage of the modified square ...
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  • 1,041
3 votes

Ethernet transformer

Can someone tell me what is the meaning of Open circuit inductance That's the inductance of a winding when all the other winding(s) are left open (Similarly, the inductance measured when all the ...
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2 votes

Ethernet transformer

In transformers, we distinguish between excitation current and magnetizing current. The excitation current represents energy passed from primary to secondary. The magnetizing current represents energy ...
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  • 1,601
1 vote

How to avoid square wave parasitic oscillation?

Your design has the wrong threshold to act as Schmitt Triggers on slew-rate limited pulses in order to create "complementary-exclusive transitions" or a "deadtime control circuit." ...
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1 vote

Can the current through a connector be higher than the rated current at lower voltages?

The answer, in most circumstances, is no. This current rating is the connector contact’s current limitation, i.e. the maximum current the connector contacts can withstand. Please note that current ...
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