betwixt
Super Moderator
Home Page
Find latest posts
View Articles
View Blog EntriesMini Statistics
- Join Date
- 4th July 2009
- Last Activity
- Yesterday 22:34
- Blog Entries
- 0
- Avatar
1 Groups
Join Groups 0 Permission Groups
betwixt is not a member of any public groups
Awards
2nd Helpful MemberAchievements
7 years registeredRecent Visitors
- aezioninc,
- ardique,
- buffalonymann,
- doncarlosalbatros,
- eagle1109,
- Guns29,
- HasHx,
- neazoi,
- soundav,
- wondrous
- Tab Content
- betwixt's Activity
- About Me
- Friends
- Experience
-
Older Activity
-
Yesterday, 22:34What you propose is rather like saying a 741 op-amp is a low pass filter because it can't amplify high frequencies. It doesn't work that way, even...8 replies | 106 view(s)
-
Yesterday, 15:41Rated cut-off frequency is 1MHz, reducing to about 100KHz as the resistance is increased. I suspect this isn't a hard limit but due to the RC time...8 replies | 106 view(s)
-
Yesterday, 10:12Running from AC is the clue, if the polarity of the wires doesn't matter, reversing them isn't going to fix the problem. It is simply the wrong kind...4 replies | 99 view(s)
-
Yesterday, 10:09betwixt replied to a thread Is there any Serial Driver at the speed 9600 for arduino uno (Atmega 328) in MicrocontrollersThere are many ways to do it but as post #2 asked, it depends on the distances and environment the signal has to pass through. We need to know how...5 replies | 188 view(s)
-
13th December 2018, 09:57betwixt replied to a thread Is there any Serial Driver at the speed 9600 for arduino uno (Atmega 328) in MicrocontrollersDriving lots of 'slave' receivers from one transmitting device is easy but be careful to choose the most appropriate system as outlined by Klaus. If...5 replies | 188 view(s)
-
13th December 2018, 09:47My understanding of Spanish is not good but what I can see looks very well presented and gives a good insight into the workings of PWM and class D...1 replies | 87 view(s)
-
13th December 2018, 00:05betwixt replied to a thread [SOLVED] Help Identify a plastic flanged/wall mount enclosure. in Mechanical Engineering and DesignAre you sure it isn't a Hammond 1591XXLSFLBK or 1591XXMSFLBK or 1591XXMFLBK, it certainly looks like one of them. Another possibility is the...2 replies | 130 view(s)
-
12th December 2018, 12:34betwixt replied to a thread Is there a practical way to tell whether a noise is CM or DM type when using a scope? in Elementary Electronic QuestionsYou are missing the point Doncarlosalbatros. Common mode means the signal is common (the same) on both wires so if you want to quantify it you need...14 replies | 376 view(s)
-
11th December 2018, 17:32betwixt replied to a thread Is there a practical way to tell whether a noise is CM or DM type when using a scope? in Elementary Electronic QuestionsProbably, but 'common mode' refers to a signal on both the + and - wires to the device so it has to be measured against some other reference. If the...14 replies | 376 view(s)
-
11th December 2018, 15:06betwixt replied to a thread Is there a practical way to tell whether a noise is CM or DM type when using a scope? in Elementary Electronic QuestionsUse a two channel scope. Measure both signals with respect to ground. Each signal, or both by adding, them will show common mode noise. Inverting...14 replies | 376 view(s)
-
10th December 2018, 21:00betwixt replied to a thread Driving a 15 inch LCD display using only USB 3.0 in Professional Hardware and Electronics DesignEither with an external PSU or by using two USB plugs with the second one only having the power and ground pins connected. You can buy "Y" cables for...1 replies | 185 view(s)
-
10th December 2018, 09:40betwixt replied to a thread Weller TCP-01 soldering iron question / problem with thermal switch in Miscellaneous EngineeringIf the switch sticks the iron will visibly glow red hot so if it seems to work as normal it should be OK. I modified one years ago when the switch...10 replies | 389 view(s)
-
9th December 2018, 22:00betwixt replied to a thread Harmonic distortion of LED driver's mains input current waveform in Power ElectronicsMore puzzling to me is where the ringing comes from. I suspect it is caused by the LC networks in the filter itself. As an experiment, try adding...2 replies | 264 view(s)
-
9th December 2018, 17:56simple, presuming you don't want to carry different data down them simultaneously to one of the UARTS: The RX signal to the PIC is at logic levels so...5 replies | 399 view(s)
-
7th December 2018, 22:21betwixt replied to a thread Potting compound to cover up components to thwart reverse engineering? in Miscellaneous EngineeringYour products must run mighty hot! Brian.7 replies | 458 view(s)
-
7th December 2018, 22:18betwixt replied to a thread discrete sr latch not matching simulation version in Elementary Electronic QuestionsNot for Goldfish (the cat would soon finish them off) but for something similar I made a £5 (~$7 US) timed light switch recently. Accurate within...11 replies | 404 view(s)
-
7th December 2018, 09:48betwixt replied to a thread discrete sr latch not matching simulation version in Elementary Electronic QuestionsCMOS inputs are floating - you need pull-up/pull-down resistors at the gate inputs or they will try to use the leakage current or capacitance of the...11 replies | 404 view(s)
-
6th December 2018, 22:39betwixt replied to a thread Help re-creating a replica movie prop in Hobby Circuits and Small Projects ProblemsThe toggles are the switches you already have in your existing design, you just wire the end of the diode to the existing switch that activates the...102 replies | 4031 view(s)
-
6th December 2018, 15:39betwixt replied to a thread [SOLVED] Generating compile time error in C in PC Programming and InterfacingIt depends on the compiler, which you have not told us. Things to try: #pragma message ("print this while compiling"); -also try without...6 replies | 291 view(s)
-
6th December 2018, 09:35betwixt replied to a thread Help re-creating a replica movie prop in Hobby Circuits and Small Projects ProblemsI was assuming the switches were biased toggles so they would open themselves when released but adding the additional resistor and capacitor would...102 replies | 4031 view(s)
-
5th December 2018, 22:29betwixt replied to a thread Help re-creating a replica movie prop in Hobby Circuits and Small Projects ProblemsSorry for not being so active on this topic. Yes, you only need one circuit triggered by closing any of the switches. d123, as you have the...102 replies | 4031 view(s)
-
5th December 2018, 09:52betwixt replied to a thread Potting compound to cover up components to thwart reverse engineering? in Miscellaneous Engineeringor... if you are dealing in large quantities, ask the manufacturer to use your own ID on them, not necessarily a logo but a number you know but the...7 replies | 458 view(s)
-
5th December 2018, 09:45betwixt replied to a thread Image processing with 16bit PIC Microcontrollers (PIC24) in Digital Signal ProcessingThanks Susan - I intended to say PIC24 rather than PIC16 but my forte never was typing! Brian.6 replies | 700 view(s)
-
5th December 2018, 00:19betwixt replied to a thread Zener diode protection on MCU digital pins in Hobby Circuits and Small Projects ProblemsI use ESP32s on mains detection circuits using nothing more than a potential divider to drop rectified 240V down to 3.3V. To protect the pins, I add...7 replies | 274 view(s)
-
4th December 2018, 23:01betwixt replied to a thread Two soldering irons failed this week. in Service Manuals, Requests, Repair TipsThose thing are horrible. Get yourself decent temperature controlled models, you can set the temperature you want and keep it fairly constant no...2 replies | 458 view(s)
-
4th December 2018, 22:52I doubt any do. Half the value and twice the risk! If one cap breaks down, the full voltage appears across the other one and breaks that too. In...9 replies | 376 view(s)
-
4th December 2018, 20:39betwixt replied to a thread Swapping Tx+ Tx- wires in Ethernet communication in Hobby Circuits and Small Projects ProblemsCrossover cables swap TX+ and TX- with the other pair RX+ and RX- to avoid the signals passing through a router/hub (which swaps them internally), it...4 replies | 190 view(s)
About betwixt
Basic Information
Optional Info
- Location:
- Aberdyfi, West Wales, UK
- Interests:
- Electronic design, TV production, photography, web site design
- Occupation:
- Retired senior engineer for a test equipment company but still very busy!
Signature
PLEASE - no friends requests or private emails, I simply don't have time to reply to them all.
It's better to share your questions and answers on Edaboard so we can all benefit from each others experiences.
It's better to share your questions and answers on Edaboard so we can all benefit from each others experiences.
Contact
Statistics
Total Posts
- Total Posts
- 12,289
- Posts Per Day
- 3.56
General Information
- Last Activity
- Yesterday 22:34
- Join Date
- 4th July 2009
- Home Page
- http://www.atv-projects.com
Helpful Postings
- Has Rated
- 6
- Post Rated
- Rated helpful 4061 out of 4061 times
Experience
Points
- Points
- 74,991
- Level
- 66
Level up completed
- Level up completed
- 81%
- Points required
- 459
Activity
- Activity
- 53.0%
- Activity last 30 days
- 99.8%
- Activity last 7 days
- 99.8%
Points
All Points for user
- Points for User
- 15,891
- Points for Reputation
- 12,312
- Points for every day since registration
- 3,573
- Points for Friends
- 6
All Points for threads
- Points for threads
- 2,247
- Points for Threads
- 95
- Points for Social Group Discussions
- 6
- Points for tagging threads
- 1,894
- Points for replies
- 251
All Points for posts
- Points for Posts
- 56,833
- Points for Posts
- 36,462
- Points for Social Group Messages
- 6
- Points for uploading Attachments
- 40
- Average Posts per Day
- 3.00
- Helpful Answers
- 20,325
All Points for miscellaneous
- Points for Misc
- 20
- Points for posting Calendar Event
- 20
Activities
14th December 2018
- 03:06 betwixt has earned 3 Points for Posts points
- 03:06 betwixt has earned 1 Points for threads points
13th December 2018
- 03:06 betwixt has earned 6 Points for Posts points
- 03:06 betwixt has earned 1 Points for User points
12th December 2018
- 03:06 betwixt has earned 6 Points for Posts points
11th December 2018
- 03:06 betwixt has earned 3 Points for Posts points
- 03:06 betwixt has earned 1 Points for threads points
- 03:06 betwixt has earned 1 Points for User points
10th December 2018
- 03:05 betwixt has earned 6 Points for Posts points
- 03:05 betwixt has earned 1 Points for User points
8th December 2018
- 03:06 betwixt has earned 4 Points for User points
- 03:06 betwixt has earned 16 Points for Posts points
- 03:06 betwixt has earned 1 Points for threads points
7th December 2018
- 03:06 betwixt has earned 9 Points for User points
- 03:06 betwixt has earned 29 Points for Posts points
6th December 2018
- 03:06 betwixt has earned 6 Points for Posts points
- 03:06 betwixt has earned 1 Points for threads points
5th December 2018
- 03:06 betwixt has earned 7 Points for User points
- 03:06 betwixt has earned 5 Points for threads points
- 03:06 betwixt has earned 30 Points for Posts points
Show Activities from all Users