FvM
Super Moderator
Find latest posts
View Articles
View Blog EntriesMini Statistics
- Join Date
- 22nd January 2008
- Last Activity
- Today 13:16
- Blog Entries
- 0
More 128 Friends
1 Groups
Join Groups 0 Permission Groups
FvM is not a member of any public groups
Awards
1st Helpful MemberAchievements
7 years registeredRecent Visitors
- afacanboy,
- barry,
- davidchew,
- Dr_Mohammad,
- dvdiyen,
- KlausST,
- kripacharya,
- parsiva,
- venkates2218,
- yogece
- Tab Content
- FvM's Activity
- About Me
- Friends
- Experience
-
Older Activity
-
Today, 12:46FvM replied to a thread FERROCORE FR3 more information? in ASIC Design Methodologies and Tools (Digital)Assume an inductive characteristic below 25 MHz. And review datasheets of major manufacturers that offer similar devices.1 replies | 42 view(s) -
Today, 09:48A circuit oscillates if the Barkhausen criterion is fulfilled. In this case if the originally negative feedback turns into positive feedback due to...11 replies | 209 view(s)
-
Today, 09:37The symbol in post #1 is among the commonly understood PMOS symbols, see https://en.m.wikipedia.org/wiki/MOSFET#Circuit_symbols Please notice...11 replies | 209 view(s)
-
Yesterday, 22:09Not sure, at least several mV. To implement a BJT analog switch with zero offset voltage, operate the transistor inversely. Disadvantage is...6 replies | 155 view(s)
-
Yesterday, 12:03As a first step towards clarity, you can measure if the two VSS pins and center pad have low R connection. Connecting as many VSS pins as...3 replies | 143 view(s)
-
Yesterday, 11:54IRF510 has been discontinued by IRF/Infineon since many years but is still stocked at catalog distributors. I never saw an IRF510N type made by IRF....7 replies | 176 view(s)
-
Yesterday, 10:52No positive feedback. MOSFET in CS configuration is inverting the signal, thus overall negative feedback. Practical problem is gain in feedback path,...11 replies | 209 view(s)
-
Yesterday, 10:39Expect the positive half wave copied to Vout. No oscillator feature. Connecting a real OP brings up stability issues, apparently beyond your scope.11 replies | 209 view(s)
-
Yesterday, 10:05No useful question without specifying the OP parameters. Too many possible answers. What do you exactly mean with "oscillatory" in this context?11 replies | 209 view(s)
-
Yesterday, 09:57I forgot to mention that there may be also a save operation area problem when operating the small gates at 15 MHz with large C load. Multiple 74HC...6 replies | 167 view(s)
-
Yesterday, 09:45For correct shift register operation, the clock signal has to to fulfill the maximum rise/fall time requirements of HC logic family. A standard opto...24 replies | 889 view(s)
-
Yesterday, 09:29FvM replied to a thread ELECTRICAL AND ELECTRONICS Instrumentation in Elementary Electronic QuestionsSome explanation are unnecessarily complicated, I think. The keyword is orthogonality. Sine signals of different frequency (also freq=0, DC) are...23 replies | 619 view(s)
-
Yesterday, 08:25FvM replied to a thread What's the difference between stacked and cascode configurations? in Analog Integrated Circuit (IC) Design, Layout and FabricationNo. In the previous thread, it's just the other way round. Quite clearly, usual cascode configuration has the second (or possibly third) stage...4 replies | 172 view(s)
-
Yesterday, 08:05FvM replied to a thread [SOLVED] LM741 Amplifier not working with IR2110 IC [PROTUES] in PCB Routing Schematic Layout software and SimulationSomething between 95 and 99%. There's no big advantage of increasing it above 95%.6 replies | 289 view(s)
-
20th July 2019, 23:55Single gate driver like LVC1G04 has about 10 ohms output impedance. Two in parallel should work. Or single LVC2G.6 replies | 167 view(s)
-
20th July 2019, 22:22You forgot to tell the intended rise and fall time.6 replies | 167 view(s)
-
20th July 2019, 15:36FvM replied to a thread RF Mosfet Class E PA for Dummies or absolute idiots in Analog Circuit DesignMOSFET Coss always decreases with rising Vds. - - - Updated - - - See this IXYS application note for 13.56 MHz class E PA....7 replies | 189 view(s)
-
20th July 2019, 11:27I moved the thread to Analog Circuit Design section because it's only marginally related to microcontrollers. The wavelength of a DFB laser can...3 replies | 205 view(s)
-
20th July 2019, 11:15FvM replied to a thread Hand soldering a 6x6mm QFN (28pin) in Hobby Circuits and Small Projects ProblemsAs already mentioned, the exposed pad should be connected to VSS. QFN ML package is relative large technology and can be easily reflow soldered...10 replies | 336 view(s)
-
20th July 2019, 10:53FvM replied to a thread fully differential opamp' s output is not symmetrical in Analog Circuit DesignApparently an AC coupled test setup. Looks like normal operation.4 replies | 174 view(s)
-
19th July 2019, 23:05It's generally no good idea to operate a peltier element with fixed voltage supply because for each combination of heat sink thermal resistance,...9 replies | 294 view(s)
-
19th July 2019, 22:19555 datasheet has application circuits and formulas for pulse width and frequency calculation. As for the 27 MHz generation, I was expecting a...8 replies | 230 view(s)
-
19th July 2019, 22:11Do you have a full datasheet with I/V/ΔT curves? What's the expected hot side temperature for -30° cold side? Did you check the actual temperature? ...9 replies | 294 view(s)
-
19th July 2019, 13:53Have a 555 circuit generating the modulation waveform and a 27 MHz crystal oscillator enabled by the pulse signal. 8 cm is rather short for 11m...8 replies | 230 view(s)
-
19th July 2019, 13:47FvM replied to a thread [SOLVED] LM741 Amplifier not working with IR2110 IC [PROTUES] in PCB Routing Schematic Layout software and SimulationThe design fault is to connect VDD to 12V, with 5V supply, the IR2110 logic inputs can be driven by processor signals directly.6 replies | 289 view(s)
-
19th July 2019, 13:42This sounds rather confused. Buffering the controller supply for 50 ms shouldn't be a problem, how 5 A and 50 mF come into play?12 replies | 392 view(s)
-
19th July 2019, 12:16dpaul replied to a thread dft-how to use .bench format in ASIC Design Methodologies and Tools (Digital)Seems that some people are working with .bench files in the same time frame. Similar post in the Xilinx forum:...1 replies | 138 view(s) -
19th July 2019, 09:44FvM replied to a thread Problem with my echo circuit using PT2399 in Hobby Circuits and Small Projects ProblemsThe standard PT2399 application circuit is sending the low-pass filtered original signal to the output, that's not appropriate for an echo effect...3 replies | 181 view(s)
-
19th July 2019, 09:35FvM replied to a thread what's the rf cavity filter tuning principle in RF, Microwave, Antennas and OpticsYour colored hand sketched annotation of the drawing makes no sense, particularly the blue circle around a coupling slit. There's no tuning bolt in...6 replies | 226 view(s)
-
19th July 2019, 09:22FvM replied to a thread Hand soldering a 6x6mm QFN (28pin) in Hobby Circuits and Small Projects ProblemsDon't necessarily need stencil, applying solder paste with a syringe is possible as well. Reflow by hot plate or hot air.10 replies | 336 view(s)
About FvM
Basic Information
Optional Info
- Location:
- Bochum, Germany
- Interests:
- Analog, DSP, Power electronics and more
Statistics
Total Posts
- Total Posts
- 44,931
- Posts Per Day
- 10.70
General Information
- Last Activity
- Today 13:16
- Join Date
- 22nd January 2008
Helpful Postings
- Has Rated
- 2082
- Post Rated
- Rated helpful 13313 out of 13313 times
128 Friends
Showing Friends 1 to 10 of 128
Experience
Points
- Points
- 257,472
- Level
- 100
Level up completed
- Level up completed
- 0%
- Points required
- 0
Activity
- Activity
- 100.0%
- Activity last 30 days
- 100.0%
- Activity last 7 days
- 100.0%
Points
All Points for user
- Points for User
- 57,960
- Points for Reputation
- 53,424
- Points for every day since registration
- 4,143
- Points for Friends
- 387
- Points for posting Visitormessages
- 2
- Points for filling profile
- 4
All Points for threads
- Points for threads
- 3,753
- Points for Threads
- 113
- Points for tagging threads
- 3,518
- Points for replies
- 122
All Points for posts
- Points for Posts
- 195,759
- Points for Posts
- 129,065
- Points for uploading Attachments
- 54
- Average Posts per Day
- 10.00
- Helpful Answers
- 66,640
All Points for miscellaneous
- Points for Misc
- 0
Activities
22nd July 2019
- 03:05 FvM has earned 4 Points for threads points
- 03:05 FvM has earned 38 Points for Posts points
- 03:05 FvM has earned 3 Points for User points
21st July 2019
- 03:06 FvM has earned 23 Points for Posts points
- 03:06 FvM has earned 2 Points for User points
- 03:06 FvM has earned 1 Points for threads points
20th July 2019
- 03:05 FvM has earned 7 Points for User points
- 03:05 FvM has earned 42 Points for Posts points
- 03:05 FvM has earned 4 Points for threads points
19th July 2019
- 03:06 FvM has earned 6 Points for Posts points
18th July 2019
- 03:06 FvM has earned 27 Points for Posts points
- 03:06 FvM has earned 1 Points for threads points
- 03:06 FvM has earned 1 Points for User points
17th July 2019
- 03:06 FvM has earned 2 Points for User points
- 03:06 FvM has earned 14 Points for Posts points
- 03:06 FvM has earned 1 Points for threads points
16th July 2019
- 03:06 FvM has earned 5 Points for User points
- 03:06 FvM has earned 3 Points for threads points
- 03:06 FvM has earned 19 Points for Posts points
15th July 2019
- 03:05 FvM has earned 6 Points for User points
Show Activities from all Users