Comment by periblepsis on Testing a Homemade Transimpendence Amplifier
If you assume an ideal opamp (not entirely true), then I believe the (-) lead of the 12 V supply is floating without a galvanic connection. Is that the reality?
View ArticleComment by periblepsis on Trying to find a way to drive a K101-IM2BYL02-L 10...
@Muddykat-Tech A quick search finds this long discussion on the LCD and the Raspberry pi. It's technical and it ends talking about a respin of an adapter board. I also see that Icenowy Zheng has worked...
View ArticleComment by periblepsis on is there any way to add amps to a vintage battery...
@KarlJay Thanks. I'll delete my comment then.
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Answer by periblepsis for Calculating the differential equation for a 1...
You can use a set of KCL equations from your schematic:simulate this circuit– Schematic created using CircuitLabThe KCL is:# method 1, solve each node individually:eqv1 = Eq( v1*s*c1 + v1/r2, vin*s*c1...
View ArticleComment by periblepsis on Why is the LTspice simulation behaving differently...
Dynam, If you use the UIC in the .TRAN card in case 1, to avoid permitting the ITS, you should see a difference -- and slowness. I've no idea what's in the IC model. But whatever is in there is likely...
View ArticleComment by periblepsis on Feeding boosted voltage to power pin of logic IC
@Hars I just received a reel of them a few days ago from TI. I wanted them for something entirely different. They can run off of 2 VDC. So the two batteries meet that spec. But they will run up to 5.5...
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Answer by periblepsis for Delay-on transistors circuit with sharp front
Usually, for sharp edges, you'd remember the term Schmitt Trigger.Your need for lots of output current compliance is a bit of a strain, though. This strongly suggests a MOSFET as the output driver for...
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Answer by periblepsis for Aviation headset microphone amplifier circuit
From the datasheet on your electret microphone, the model you use for simulation should look like this:The SENS and RL and IMAX are taken directly from the datasheet for the microphone capsule you...
View ArticleComment by periblepsis on Project Feasibility and Advice on Microcontrollers
@AmateurE Much work has gone into using thousands of processors to perform tasks. Apollo's DN3000 system could connect up hundreds or thousands of workstations and run a single application on just one...
View ArticleComment by periblepsis on What happens when the feedback loop is also...
@JuanAldrey Are you still needing help with this?
View ArticleComment by periblepsis on What happens when the feedback loop is also...
I don't know of any literature on that particular circuit. But it's not hard to analyze. C5 is important. But not to block DC. It adds another order to the circuit. You have a loaded-down low-pass in...
View ArticleComment by periblepsis on What type of crystal oscillator is this?
Hmm. Too bad that the Droitwich transmitter no longer uses 200 kHz and is now 198 kHz. There goes the calibration step mentioned in the docs.
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Answer by periblepsis for Simple circuit analysis question, voltage across an...
Perhaps it may be easier to see if you select the negative probe as the default \$0\:\text{V}\$:Then just place the voltmeter measurements where they belong (on the + side, because that's what the...
View ArticleComment by periblepsis on Voltage-controlled oscillator problem
Where did you find the schematic? Source? Also, hopefully, there will be a design discussion with it that should be carefully read. If not, if it is just a pasted schematic without any discussion, then...
View ArticleComment by periblepsis on Synchronous FIFO design code review
I'd rather not go through all that. But I can recommend that you read this page. It's excellent. You may also then want to consider this page when you get to the point of two different clock domains....
View ArticleComment by periblepsis on Arbitrary Behavioral Voltage Source : Its not...
Have you tried if(,,) ? I don't recall ever trying it the way you wrote that. Not saying it doesn't work. It is just that the help file seems to suggest the if. Also, try specifying a very small step...
View ArticleComment by periblepsis on STM32H7 Move entire code to RAM: Global variables...
Use the linker's control source file. It should have all of what you need. It can copy segments, link them as if they are located in different places, etc. Modern linkers are very powerful the days....
View ArticleComment by periblepsis on Ngspice or Spice models equations
Do you know how to set up a directed graph of a circuit? Just the bipolar transistor alone has many models: Ebers-Moll, Gummel-Poon, VBIC, and MEXTRAM. And many versions of each. Do you know what the...
View ArticleComment by periblepsis on is there any GUI tool to see cir files in schematics?
@kile I don't see any problems at all: LTspice. What's the difficulty? The schematic produces the exact same netlist, as you can see. The operating point for both (with and without the schematic) is...
View ArticleComment by periblepsis on is there any GUI tool to see cir files in schematics?
@kile Yes, I just used my shoddy brain to draw that picture. LTspice will NOT generate that for you. If you want a pretty picture, then you have to draw it yourself. If you want nice pictures from...
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