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66%
+2 −0
Q&A More accuracy from multiple resistors in series or parallel?

The worst case won't get any better, whether series, parallel, or some other combination. The result of two 1 kΩ ±5% resistors in series is a 2 kΩ ±5% resistor. The probability that the result is ...

posted 4y ago by Olin Lathrop‭  ·  edited 4y ago by Olin Lathrop‭

Answer
66%
+2 −0
Q&A De-bouncing input signals?

I've heard that input signals to digital circuits should be "de-bounced", at least sometimes. What is de-bouncing? Why is it needed? When is it needed? What is bouncing around in the first place?

2 answers  ·  posted 4y ago by Olin Lathrop‭  ·  last activity 4y ago by Circuit fantasist‭

Question de-bouncing
66%
+2 −0
Meta Creating an additional "user"

Personally I'd rather have everyone use their real name and affiliation. That basically puts their reputation out there on anything they say. If you really believe in something, have the guts to ...

posted 4y ago by Olin Lathrop‭

Answer
66%
+2 −0
Q&A Bit-rate vs Baud-rate

I am really confused how the terms bit-rate are baud-rate are used in electronics. I never bothered thinking about baud-rate being different than bit-rate before. But recently, one of my teachers t...

3 answers  ·  posted 4y ago by Giga-Byte‭  ·  last activity 4y ago by Canina‭

Question baudrate bit-rate
66%
+2 −0
Meta Are questions about electronics market trends on-topic?

It could be OK if you are asking about technology reasons why a class of products will be phased out. Asking about forces that cause similar things in the past should be OK too, as long as the rea...

posted 4y ago by Olin Lathrop‭

Answer
66%
+2 −0
Q&A How to plot the I-V curve of a tunnel diode?

How to test a Tunnel diode in 25 words or less. With DC bias = ~490mV with fine tuning and a small signal swing of 60mV you can generate a IV negative slope of -16 Ohms.

posted 4y ago by TonyStewart‭  ·  edited 4y ago by TonyStewart‭

Answer
66%
+4 −1
Meta Are questions about proper cable repair on-topic?

Would a question about cabling repair be on-topic? My main focus would be to learn about the proper workmanship to do a professional, not just makeshift, repair on an automotive sensor cable.

2 answers  ·  posted 4y ago by Martin‭  ·  last activity 4y ago by Olin Lathrop‭

Question support on-topic
66%
+2 −0
Q&A Using FET based followers and design rules

... it is still unclear to me how to determine the voltage drop introduced by these transistors... Very interesting question... I have asked myself many times in the past... and I have not bee...

posted 4y ago by Circuit fantasist‭  ·  edited 4y ago by Circuit fantasist‭

Answer
66%
+2 −0
Q&A ESD Protection - Differential Amplifier

Not a diff amp Something doesn't make sense here. You want A1A to act as a differential amplifier, but that's not how you wired it: Here is a real diff amp: Note how the right side of R1 is...

posted 4y ago by Olin Lathrop‭

Answer
66%
+2 −0
Q&A Understanding the s11 and s21 coefficients of a microstrip line with resistor to ground

I thought I understood the theory of scattering parameters, smith charts etc. until I tried a practical example. The following stupid example is supposed to be a microstrip line shunted by two 100...

2 answers  ·  posted 4y ago by coquelicot‭  ·  edited 1y ago by Lorenzo Donati‭

Question microstrip S-parameters
66%
+2 −0
Q&A Using FET based followers and design rules

In addition to Olin's answer: and I'm particularly interested in jfets and mosfets. If you decide to go down the FET route the dilemma between J and MOS gets down to home much you are willi...

posted 4y ago by 2kind‭

Answer
66%
+2 −0
Q&A Why is the ACK (acknowledge bit) in the CAN bus frames dominant? What could have been the rationale behind that design decision?

In addition to what Lundin said, making ACK dominant means that something out there is actively responding, and that response is affirmative. If ACK were recessive, then the transmitting node bein...

posted 4y ago by Olin Lathrop‭

Answer
66%
+2 −0
Q&A Understanding the s11 and s21 coefficients of a microstrip line with resistor to ground

In the absence of VNA product documentation...... Now, -9 dB is equivalent to a ratio of 0.34 approximately, and -3.53 db is equivalent to a ratio of 0.66 approximately. I expected S11 to be nea...

posted 4y ago by Andy aka‭

Answer
66%
+2 −0
Meta Viewing the potential live output when editing a question or answer.

I have just raised a Q and A but when editing the answer (that involves a picture) there is no "live" version of the potentially finished post and this will prove to be a problem when making a comp...

3 answers  ·  posted 5y ago by Andy aka‭  ·  last activity 5y ago by Andy aka‭

Question bug proposal pictures list-items
66%
+2 −0
Q&A How do I design a boost converter? What are the basics I should know?

I need to design a simple boost converter like this: - I want to control duty cycle from another circuit such as an MCU but, I'm unsure how to proceed. My requirements are: - Input voltage 12 vol...

1 answer  ·  posted 5y ago by Andy aka‭  ·  last activity 4y ago by Andy aka‭

Question boost-converter
66%
+2 −0
Q&A Low loss impedance matching without a transformer

Low-pass impedance transformation Theory Input Impedance: - $$Z_{IN} = j\omega L + \dfrac{\dfrac{R_L}{j\omega C}}{R_L + \dfrac{1}{j\omega C}} = j\omega L +\dfrac{R_L}{1 + j\omega R_L C} = \dfrac{j...

posted 5y ago by Andy aka‭  ·  edited 5y ago by Andy aka‭

Answer
66%
+2 −0
Q&A Low loss impedance matching without a transformer

I have a signal at 10 MHz produced from a 50 Ω source. How can I match that to a 300 Ω load with low losses without using an RF transformer (space constraints)? Are there any circuits and formulas ...

2 answers  ·  posted 5y ago by Andy aka‭  ·  last activity 5y ago by Andy aka‭

Question LC-network impedance-matching
66%
+2 −0
Q&A What to check for when buying an electronic component or module?

How can I acquire electronic parts/items/modules and ensure that there is minimal risk of them being unsuitable for my project or design?

2 answers  ·  posted 5y ago by Andy aka‭  ·  last activity 5y ago by manassehkatz‭

Question component module reliability quality datasheet
66%
+2 −0
Q&A Relationship between bode plot and pole zero diagram

What is the relationship between the pole zero diagram and bode plot? Case example: a 2nd order RLC low pass filter: - $$\dfrac{V_{OUT}}{V_{IN}} = \dfrac{\frac{1}{j\omega C}}{R+j\omega L +\frac{1}...

1 answer  ·  posted 5y ago by Andy aka‭  ·  edited 5y ago by ArtOfCode‭

Question pole-zero-diagram Bode-plot RLC-filter
66%
+2 −0
Meta Tagline/Mission Statement/etc.

The line at the top of the list of Questions is currently: General Q&A about the design and function of electronic and electric power systems, their theory, and tools specific to those fields. ...

1 answer  ·  posted 5y ago by manassehkatz‭  ·  edited 4y ago by manassehkatz‭

Question discussion status-completed
66%
+2 −0
Q&A Purpose of emitter resistor in a common collector amplifier

In addition to the previous considerations, I will add a few more. Stages with voltage output (such as a voltage follower) are implemented as voltage dividers consisting of two elements in series "...

posted 4y ago by Circuit fantasist‭  ·  edited 4y ago by Circuit fantasist‭

Answer
66%
+2 −0
Q&A Why RC toys still operate in 27Mhz band?

Recently I had opened an remote control (RC) toy to see its circuit and found that it operates on 27 Mhz. Not just that toy even many toys operate in that 27 and 49 Mhz band. These days we find eve...

2 answers  ·  posted 4y ago by aditya98‭  ·  last activity 4y ago by Olin Lathrop‭

Question frequency
66%
+2 −0
Q&A High pass filter design

You are asking for a filter that passes 2% at 60 Hz and 99% at 90 Hz. That comes out to a transition of 97% of the amplitude within 0.6 of an octave, which is quite aggressive. The real answer My ...

posted 4y ago by Olin Lathrop‭  ·  edited 4y ago by Olin Lathrop‭

Answer
66%
+2 −0
Q&A High pass filter design

How the real pros would translate these needs into design rules for a calculator? Speaking as a pro I wouldn't use a calculator because I'd use a simulator and tinker with a few values until I go...

posted 4y ago by Andy aka‭

Answer
66%
+2 −0
Q&A Is it possible for one transistor to switch between two loads?

I suspect this is another of your trick questions and you are waiting for the chance to show us your unrivaled knowledge, but I will play the straight man for you. No. By definition, an SPST switch...

posted 4y ago by Elliot Alderson‭  ·  last activity 4y ago by Elliot Alderson‭

Answer