KJ7LNW's user avatar
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KJ7LNW
  • Member for 3 years, 8 months
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16 votes
5 answers
3k views

What is an ideal layout for a normally-open solder jumper?

11 votes
4 answers
2k views

Is there anything particularly special about a "short" and an "open" in a VNA calibration kit?

10 votes
3 answers
8k views

What is Negative Inductance?

8 votes
2 answers
692 views

Why would you use a shared-gate multi-channel MOSFET device?

5 votes
1 answer
1k views

What protocol does the data wire on an EV charger use?

5 votes
1 answer
1k views

What is the purpose of these shunt capacitors on the I2C bus?

5 votes
3 answers
622 views

LTC4311 vs PCA9515A: What is the difference?

4 votes
2 answers
90 views

What type of probes are used to connect to plated-through-holes without soldering a pin into the socket? [duplicate]

4 votes
3 answers
335 views

Does the L/C-shunt vs C-shunt/L order of an L-match matter?

4 votes
2 answers
1k views

Some LDO's specify noise in nV/Hz, others specify it in μV(rms). How do they equate?

3 votes
2 answers
952 views

How do you match an LDMOS FET to 50 Ohms?

3 votes
2 answers
72 views

What happens if you use L or C components in RF filters above their resonant frequency?

3 votes
0 answers
127 views

Square vs Round Air-core Inductors for RF filters: When would you use one vs. the other?

3 votes
2 answers
635 views

Can VSWR be complex-valued or is it always real?

3 votes
1 answer
253 views

Do there exist I2C address-remapping "NAT" chips?

2 votes
3 answers
370 views

I2C: Can you pull up SDA/SCL lines through an LED?

2 votes
1 answer
148 views

Pinout question: Is this just a PCIe x8 slot in a proprietary card position?

2 votes
0 answers
32 views

What are the common package names for pin spacing in multiples near 50-mils?

2 votes
1 answer
430 views

Why are servo potentiometers in the 5k range?

2 votes
1 answer
69 views

How does a planar balun work (ie, microstrip <-> stripline)?

2 votes
2 answers
84 views

How big a pull-up resistor is needed to pull up an internally pulled-down GPIO (ESP32-C6)?

2 votes
1 answer
302 views

Which matrix index should be used when Y (admittance) is shown to compose a circuit segment mapped to an ABCD matrix? Y21? Other?

2 votes
1 answer
134 views

Can you identify this digital signal? It looks like a UART signal and can't figure out the baud rate

2 votes
1 answer
82 views

When should an unmatched antenna be measured with a cable length in even multiples of a half-wavelength?

2 votes
1 answer
3k views

What is the difference between "Operating Voltage" and "Drain-Source Voltage" for an LDMOS FET?

2 votes
1 answer
543 views

Please Identify this adjustable inductor (ferrite-core bobbin)

2 votes
0 answers
312 views

How do you calculate phase shift induced by a shunt capacitor?

2 votes
1 answer
313 views

L-C-L vs Pi network

2 votes
2 answers
631 views

Band-pass filter vs. Serial Low-pass+High-pass filter - Is there a difference?

2 votes
0 answers
244 views

How would you design a power divider with 50-Ohm unbalanced input and 4x 100-Ohm balanced output impedances to send RF down a CAT6 cable?