Answer by periblepsis for What causes signal distortion in the BJT circuit I...
You are showing us an emitter follower (or common collector) topology. You've included a DC bias to your base source, which is good to do. But the problem is that while \$Q_1\$ can source current to...
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Answer by periblepsis for How to Convert 16 bit to Decimal on Multisim?
Many of the same skills required for a calculator can be applied to solving the problem of binary to decimal conversion.I will provide two completely different approaches, one...
View ArticleComment by periblepsis on Feedback of the amplifier
Nice and I appreciate the note about the voltage divider being included. You don't write answers as much as I'd wish from you, given how much I enjoy your precision and perspective. +1
View ArticleComment by periblepsis on BJT circuit questions
I can't tell if the question is for an explanation of the circuit or if it's about getting a solution that activates a 3V system at 200 mA if and only if a solar panel (being used as a light/dark...
View ArticleComment by periblepsis on Why do electric arcs rise?
You don't need thoughts. It's not as though the topic hasn't been studied to death. Just glancing over at my library, I see three of the five books I have on just this topic alone: "The Art and Science...
View ArticleComment by periblepsis on Can't get if statement to work in LTSpice
I can't figure out what you are doing, let alone figure out what you are doing wrong. Perhaps if you'd write more? Here's an IF example that works fine for me.
View ArticleComment by periblepsis on Integrated circuit amplifier with BJTs
@AmitM To 1st order the gain is 50 because twice the vi/R3 current has to be pulled through R2 so the gain is -2 R2/R3. When considering 2nd order effects such as the variation in base current at the...
View ArticleComment by periblepsis on How to calculate the diode currents in this PV Cell...
@Manishk The first equation amounts to \$I_2+I_{\text{d}_1}=I_{\text{ph}_1}\$. Agreed. But the second equation doesn't amount to \$I_2+I_{\text{d}_2}=I_{\text{ph}_2}\$. So I come to a stop there....
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Answer by periblepsis for Multi-stage amplifier help
goalsThe specifications of \$A_v=200\$ (\$\approx 46 \:\text{dB}\$) into \$R_{_\text{L}}=100\:\Omega\$ with \$v_{_{\text{IN}_{PP}}}=10\:\text{mV}\$.Calculates out to...
View ArticleComment by periblepsis on Will an isolation transformer have a noticeable...
@neural You can also consider using a battery powered scope. These are safe.
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Answer by periblepsis for Find equivalent resistance of a resistor circuit
There isn't just one process. There's many different approaches. Some more general than others.But in this case I'd like to call your attention to the voltage dividers present in your circuit.Note that...
View ArticleComment by periblepsis on Receiver tracking problems
This is an interesting academic question. I'd like to include this link from EESE to this topic.
View ArticleComment by periblepsis on AC Circuit Analysis - Thevenin and Norton Circuit
For 17(1) isn't Eth just 10 * (10+j10) / ((10+j10)+(20-j20))? If so, then isn't the result 2 + j4? (I do get the same Zth.)
View ArticleComment by periblepsis on Why is my 315 MHz SAW oscilator resonating at 220Mhz?
Look up "ghosting" (especially as it relates to external parasitics) and read anything from Qualcomm on the topic: layout and design and use your frequency in your search, as well. When you write "I am...
View ArticleComment by periblepsis on Does hysteresis still occur if saturation is not...
If you want to watch it happening in real time on a scope, see here. I've started it at about the right spot to get to the point. You can see something about what happens. If you watch the video series...
View ArticleComment by periblepsis on Why is my 315 MHz SAW oscillator resonating at 220...
Look up "ghosting" (especially as it relates to external parasitics) and read anything from Qualcomm on the topic: layout and design and use your frequency in your search, as well. When you write "I am...
View ArticleComment by periblepsis on CRT vertical deflection problem
@squelch41 Since you mention about a difference after warming up and restarting, I'm curious about what you might observe from using directed "cold spray." Do the warm up and restart, make sure things...
View ArticleComment by periblepsis on Feedback of amplifier
The emitter is pretty close to a voltage source. That explains both cases.
View ArticleComment by periblepsis on Root Extractor circuit
Start by supposing that the input is zero volts. Can you follow through some chain of logic from there? What current must be pulled via Q1's emitter? What does this mean for the anode voltage of D1 and...
View ArticleComment by periblepsis on Need help deciding wire gauge
We know nothing about your tap water. (And it can vary quite a lot, with metals such as copper or lead, alkalinity or acidity, etc.) We know nothing about the project goals. We don't even know a...
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