FvM
Super Moderator
Find latest posts
View Articles
View Blog EntriesMini Statistics
- Join Date
- 22nd January 2008
- Last Activity
- Today 09:39
- 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
- Cesar0182,
- EltonBrasil,
- firasgany7,
- hamidkavianathar,
- Kartikpatel,
- Neelsama,
- pancho_hideboo,
- sjaikumar,
- std_match,
- wondrous
- Tab Content
- FvM's Activity
- About Me
- Friends
- Experience
-
Older Activity
-
Today, 09:37FvM replied to a thread Differential amplifier measure -32V to +32V with single 3.V supply in Analog Circuit DesignThe asymmetrical input structure implies unequal input impedance. I prefer a true instrumentation amplifier (either 2 or 3 OP design) for...5 replies | 32 view(s) -
Yesterday, 23:13I gave some hints why the current waveform is likely to be distorted by the characteristic of the transducer. There may be more problems with your...27 replies | 1032 view(s)
-
Yesterday, 15:45FvM replied to a thread PCB design 450 MHz LVDS trace routing in PCB Routing Schematic Layout software and Simulation50r SE means zero coupling (infinite separation) of differential lines, that's rather impractical. A typical common mode impedance of the...8 replies | 460 view(s)
-
Yesterday, 15:11Using high frequent PWM (quasi continuous variation of the 50 Hz voltage) eliminates 50 Hz harmonics but adds pwm frequent (fundamental + harmonics)...3 replies | 152 view(s)
-
Yesterday, 12:26FvM replied to a thread Data Transfer over long rwisted pair cable in PLD, SPLD, GAL, CPLD, FPGA DesignAs far as I see, BroadR isn't suited for the intended cable length. This chip spec is referring to 15 m UTP....14 replies | 825 view(s)
-
Yesterday, 11:25GTO switching at MHz? Oops! That's completely unrealistic. Even very fast switches like SiC MOSFET won't be used in this range. 150 kHz to 2 MHz...3 replies | 152 view(s)
-
Yesterday, 11:16The calculations and respective conclusions are presuming correct I and U measurements. Particularly the current measurement is very implausible,...27 replies | 1032 view(s)
-
Yesterday, 10:14dpaul replied to a thread Data Transfer over long rwisted pair cable in PLD, SPLD, GAL, CPLD, FPGA DesignYou might consider BroadR-Reach Ethernet. It is transmission of data using Ethernet protocol using twisted pair cable. The physical layer has been...14 replies | 825 view(s) -
Yesterday, 09:08FvM replied to a thread sampling rate vs rate of change of input for control system in Analog Circuit DesignAgain, you are not understanding the concepts of time discrete signal processing. Required sample rate depends on signal bandwidth, not magnitude...11 replies | 305 view(s)
-
12th November 2019, 22:50Did you sketch the circuit right? As drawn, Cdom is no Miller capacitor. Q5 should be npn.3 replies | 146 view(s)
-
12th November 2019, 22:42FvM replied to a thread Class AB fully differential amplifier design issue in Analog Integrated Circuit (IC) Design, Layout and FabricationThis looks like a poor FD design. How does it achieve common mode control?3 replies | 188 view(s)
-
12th November 2019, 16:52Current mirror need monolithic transistor pairs to achieve reasonable matching. The emitter degeneration resistors are a possible means to get a kind...3 replies | 156 view(s)
-
12th November 2019, 13:32Basically yes. Generated field strength of simple coil configurations (single turn, multi turn spiral) can be calculated based on elementary physical...11 replies | 308 view(s)
-
12th November 2019, 13:27FvM replied to a thread sampling rate vs rate of change of input for control system in Analog Circuit DesignThe idea behind your examples seems to be that the sampled data should look the same as time continuous data. That's not the way time discrete...11 replies | 305 view(s)
-
12th November 2019, 11:27FvM replied to a thread A hole for Plastic pin of ethernet connector in PCB Routing Schematic Layout software and SimulationNo. You'll use non-plated hole for mechanical alignment or locking pins, without annual ring etc.2 replies | 128 view(s)
-
12th November 2019, 11:21FvM replied to a thread Updating footprint in PCB window after being changed in PCB library in PCB Routing Schematic Layout software and SimulationNot sure what your problem is. Altium Designer has e.g. a function "update selected component from PCB library" under component actions. Can be...4 replies | 216 view(s)
-
12th November 2019, 10:59You are apparently simulating without realistic cable (e.g. 50 ohms transmission line). For medium speed source side impedance matching is a...7 replies | 302 view(s)
-
12th November 2019, 10:492 G (it's antique cgs unit, better use SI unit 0.2 mT) isn't particular strong, five to ten times earth magnet field. It can be generated with a few...11 replies | 308 view(s)
-
11th November 2019, 17:49You are apparently underestimating the output voltage drop with 50 ohm load. Did you include the 50 ohm load in your simulation? Usually a 50 ohm...7 replies | 302 view(s)
-
11th November 2019, 17:40Magnetic coil definitely means closed loop. There's no noticeable magnetic field generated by the shown apparatus in the kHz frequency range. The...11 replies | 308 view(s)
-
11th November 2019, 14:57Apart from feasibility of battery operation, start with a clear specification. What's the intended operation volume over that you want to achieve...11 replies | 308 view(s)
-
11th November 2019, 11:17FvM replied to a thread Help to build my auto disconnecting circuit. in Hobby Circuits and Small Projects ProblemsIt's a Chinese product, check different vendors.10 replies | 381 view(s)
-
11th November 2019, 11:10FvM replied to a thread sampling rate vs rate of change of input for control system in Analog Circuit DesignThe calculation makes no sense, there's no reason why the controller shouldn't perform a large step in one sampling interval. Rate of change and...11 replies | 305 view(s)
-
11th November 2019, 11:01FvM replied to a thread "RS-232 port to transfer data to PC for analysis" in Software Problems, Hints and ReviewsThe first question has been already answered in general. If it specifically work with the said programmer has to be evaluated, or answered by the...6 replies | 344 view(s)
-
11th November 2019, 10:54FvM replied to a thread Regulating temperature of mains connected heating element: Skipping mains half cycles in Power ElectronicsI would expect a larger time constant of the heater with at least < 1 Hz cut-off frequency.19 replies | 627 view(s)
-
11th November 2019, 08:51You should give us some information what you are trying to achieve. If you are copying a board, may be it uses additional configuration data or even...18 replies | 1188 view(s)
-
11th November 2019, 08:46You should show a schematic to clarify what you are talking about. Some previous discussions about "deboo" integrator...1 replies | 86 view(s)
-
10th November 2019, 22:34FvM replied to a thread Regulating temperature of mains connected heating element: Skipping mains half cycles in Power ElectronicsI don't have the requirements at hand right now. Does your application require this short burst period?19 replies | 627 view(s)
-
10th November 2019, 19:38FvM replied to a thread Regulating temperature of mains connected heating element: Skipping mains half cycles in Power ElectronicsYour flicker assessment is a kind of shallow. IEC 61000-3-3 isn't applicable for > 16 A load current. You have to refer to IEC 61000-3-11. It's...19 replies | 627 view(s)
About FvM
Basic Information
Optional Info
- Location:
- Bochum, Germany
- Interests:
- Analog, DSP, Power electronics and more
Statistics
Total Posts
- Total Posts
- 45,616
- Posts Per Day
- 10.57
General Information
- Last Activity
- Today 09:39
- Join Date
- 22nd January 2008
Helpful Postings
- Has Rated
- 2105
- Post Rated
- Rated helpful 13525 out of 13525 times
128 Friends
Showing Friends 1 to 10 of 128
Experience
Points
- Points
- 261,156
- 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
- 58,446
- Points for Reputation
- 53,852
- Points for every day since registration
- 4,201
- Points for Friends
- 387
- Points for posting Visitormessages
- 2
- Points for filling profile
- 4
All Points for threads
- Points for threads
- 3,936
- Points for Threads
- 113
- Points for tagging threads
- 3,698
- Points for replies
- 125
All Points for posts
- Points for Posts
- 198,773
- Points for Posts
- 131,009
- Points for uploading Attachments
- 54
- Average Posts per Day
- 10.00
- Helpful Answers
- 67,710
All Points for miscellaneous
- Points for Misc
- 0
Activities
14th November 2019
- 03:05 FvM has earned 26 Points for Posts points
- 03:05 FvM has earned 2 Points for threads points
- 03:05 FvM has earned 2 Points for User points
13th November 2019
- 03:05 FvM has earned 9 Points for User points
- 03:05 FvM has earned 47 Points for Posts points
- 03:05 FvM has earned 1 Points for threads points
12th November 2019
- 03:06 FvM has earned 57 Points for Posts points
- 03:06 FvM has earned 2 Points for threads points
- 03:06 FvM has earned 12 Points for User points
11th November 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 1 Points for threads points
10th November 2019
- 03:06 FvM has earned 2 Points for threads points
- 03:06 FvM has earned 18 Points for Posts points
9th November 2019
- 03:05 FvM has earned 3 Points for Posts points
- 03:05 FvM has earned 1 Points for User points
8th November 2019
- 03:05 FvM has earned 2 Points for User points
- 03:05 FvM has earned 17 Points for Posts points
- 03:05 FvM has earned 1 Points for threads points
7th November 2019
- 03:06 FvM has earned 31 Points for Posts points
Show Activities from all Users