Comment by periblepsis on Error while building a MIPS ALU Controller Design
Do you think that 6'b00_000000 perhaps should be 8'b00_000000?
View ArticleComment by periblepsis on Problem with a diode-circuit design
@RichardKingston Look at the chart. There's no current until about 2 V is applied. Then it suddenly starts. You have a diode model which says 700 mV across it. How many of them would it take to stop up...
View ArticleComment by periblepsis on Filter design according to harmonics in an inverter
You have additional information. Your PWM has differing pulse widths towards the center vs towards the cross-over points. This a priori information can be used to design a better filter than if you...
View ArticleComment by periblepsis on Filter design according to harmonics in an inverter
Part tolerances are also ever tighter with higher Q. So low Q is a good thing in that regard, as well.
View ArticleComment by periblepsis on How to find number of poles through commutation steps?
You are asking for a personal tutor, more or less. What works better here is having about 70-80% of the answer already, and arriving here with a very specific remainder that doesn't require a textbook...
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Answer by periblepsis for Problem with a diode-circuit design
Kind of hoped you'd write up what you worked out in comments. (Very good!) But as I already have the image prepared, I will write up your thoughts below.Yes, as you worked out you need three diodes...
View ArticleComment by periblepsis on 25A SSR Failing
I know you say it isn't heating up. But you don't know for sure what's taking place at the critical IC dice. And it sounds as though it is shutting down for thermal reasons. What are the boiler details...
View ArticleComment by periblepsis on What does Vdd and Voh mean?
Mox, Hi. All circuits are analog, in the sense that they cannot instantly go from one voltage or current to another. Everything takes time. And there is an in-between period, during transitions from...
View ArticleComment by periblepsis on Measuring nA leakage current
You say accurate but say nothing about the applied voltages. Even if you got a diode leakage measurement of 4 nA, for example, does it matter to you if that was with a reverse voltage of 1 V or 10 V?...
View ArticleComment by periblepsis on Lowest-power approach for latching circuit for...
Along with the latching relay suggestion, I wonder why you care about the small dissipation from a relay, at all. If it is driven from the same voltage source that your load is also powered from then...
View ArticleComment by periblepsis on Help.Replacing blown MOSFET+ resistors in AC/DC welder
Eric, you have more problems ahead than just replacing parts. The board doesn't look good. I suspect other areas I can't see may need added time. You may be out of your depth. There are engineers...
View ArticleComment by periblepsis on How turn on and off LED by same push SPST button
The design I see with the xor isn't much use.
View ArticleComment by periblepsis on Why is this not working as a Schmitt Trigger?
I discuss Schmitt triggers here. There are some very good papers to consider listed there.
View ArticleComment by periblepsis on Identify 64k x 8 bit DRAM in DIP-24N from the pinout
The site doesn't come up very quickly for me and times out, so forget looking at it for now. But one of the problems with CGA/EGA before VGA was the lack of dual port DRAM. I believe (my memory is......
View ArticleComment by periblepsis on Working of push pull configuration to drive DC motor
Use the tools, that this site makes available to you when asking questions, to draw out a schematic diagram of what you are working with and provide some of the voltage values you are measuring, if and...
View ArticleComment by periblepsis on How do I use ideal MOSFET model in LTspice? or How...
An ideal mosfet is modeled as: if Vgs > Vth then Id = Vds/Rdson else Id = Vds*Goff. Or something like that. Just create a model. You set a node voltage by either tying a grounded voltage source to...
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Answer by periblepsis for Why is this not working as a Schmitt Trigger?
Given a single supply rail (\$10\:\text{V}\$) and the biased source you show into the (-) input, then the following:simulate this circuit– Schematic created using CircuitLabI'll assume that you want...
View ArticleAnswer by periblepsis for What is the relation between Vin, Vmid, and Vout in...
I won't address everything. But I will help with this part:Moreover I can't understand how the equation below pops out.I tried to keep the steps very incremental in...
View ArticleComment by periblepsis on Two basic timers on an STM32 don't work simultaneously
I don't know a single thing about the STM32. How are the interrupt vectors arranged in memory? is there a different vector location assigned to TIM6 vs TIM7? How does the compiler parse syntax to...
View ArticleComment by periblepsis on I'm trying to design a CE BJT amplifier with 260...
48.3 dB and at 5.5 MHz. That's not happening in a single BJT CE stage.
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