BradtheRad
Super Moderator
Find latest posts
View Articles
View Blog EntriesMini Statistics
- Join Date
- 1st April 2011
- Last Activity
- Today 01:38
- Blog Entries
- 0
More 83 Friends
1 Groups
Join Groups 0 Permission Groups
BradtheRad is not a member of any public groups
Awards
No Awards.
Achievements
7 years registeredRecent Visitors
- Akanimo,
- ArakelTheDragon,
- betwixt,
- dexterbot80,
- dick_freebird,
- jisna,
- kunalsan,
- Tusharsinh,
- WasecaTech,
- wondrous
- Tab Content
- BradtheRad's Activity
- About Me
- Friends
- Experience
- Tab Content
-
Older Activity
-
Today, 00:01BradtheRad replied to a thread Trying to repair a Bosch JS470E jigsaw - component ID? in Service Manuals, Requests, Repair TipsA possible reason for mounting an inductor close to a motor, is to detect when a stall occurs. Then it can trigger a shutdown to prevent extreme...3 replies | 76 view(s) -
20th April 2019, 05:57I guess you're familiar with the Hayes AT command set: www.computerhope.com/atcom.htm I worked with external and internal modems. Whenever I...13 replies | 1286 view(s)
-
20th April 2019, 05:09A reasonable variation is ten percent since a similar tolerance was expected in resistors installed in a great number of amplifiers for years. An...2 replies | 206 view(s)
-
19th April 2019, 04:01Simulation showing how a diode-capacitor-resistor network extends a pulse. One works on an upward-going pulse. The other works on a...8 replies | 460 view(s)
-
13th April 2019, 22:55BradtheRad replied to a thread [SOLVED] Creating a very sharp pulse generator in Analog Circuit DesignSimulation showing how a series capacitor produces a spike-like waveform from a slightly rounded square wave. The series cap performs the...13 replies | 1015 view(s)
-
13th April 2019, 11:48BradtheRad replied to a thread [SOLVED] Creating a very sharp pulse generator in Analog Circuit DesignA quick slew rate requires that a device change immediately from high ohm to low ohm (or vice versa), so that current flow changes immediately. ...13 replies | 1015 view(s)
-
12th April 2019, 10:30Yes, that's okay. It sounds as though you purchased 6 gauge wire, 4mm diam.32 replies | 4675 view(s)
-
12th April 2019, 03:05BradtheRad replied to a thread Where i can find literature about integrated voltage supervisors (brownout detector) in Analog Circuit DesignTry a forum search for 'voltage stabilizer'. A few threads here have asked about making one. Frequently the purpose is to correct drooping mains...2 replies | 196 view(s)
-
11th April 2019, 09:07BradtheRad replied to a thread PEMF and RIFE dual circuit schema questions in Service Manuals, Requests, Repair Tips* LED's have a reverse breakdown voltage which might be merely a few volts. The diodes in my simulation are safety diodes, recommended to be...17 replies | 3736 view(s)
-
11th April 2019, 06:29BradtheRad replied to a thread VFD to control 3 phase AC induction motor 400V 6000 rpm in Power ElectronicsYes, the inductor introduces power factor error. Hence the capacitor needs to be added to provide power factor correction. (It has the additional...95 replies | 11231 view(s)
-
11th April 2019, 00:26To use basic formulas: 1) Start with ohmic resistance (R) in your signal path. Or estimate it as voltage divided by Amperes. 2) Calculate C to...3 replies | 382 view(s)
-
10th April 2019, 07:05BradtheRad replied to a thread PEMF and RIFE dual circuit schema questions in Service Manuals, Requests, Repair TipsIt's wise to have two led's, one to indicate positive polarity and one for negative. (The schematic has one led across a coil, but the author no...17 replies | 3736 view(s)
-
10th April 2019, 04:46BradtheRad replied to a thread VFD to control 3 phase AC induction motor 400V 6000 rpm in Power ElectronicsTo change output voltage at the load, change amplitude of the fundamental going to the op amp. Notice the SPWM waveform remains the same amplitude....95 replies | 11231 view(s)
-
10th April 2019, 02:32BradtheRad replied to a thread How can i chose the resistor value to simulate a PV cell in ADS in Power ElectronicsI measured my photovoltaic cells under the sun, loaded by various resistors. I took V & A readings for each ohm value. I made a computer program to...9 replies | 3133 view(s)
-
9th April 2019, 07:06BradtheRad replied to a thread prolong the incoming pulse duration with some electronics solution in MicrocontrollersIt sounds as though you wish to store an upward-going pulse, correct? It can be done with a one-shot, or an SR flip-flop, or a DCR network. DCR...5 replies | 663 view(s)
-
9th April 2019, 01:36BradtheRad replied to a thread PEMF and RIFE dual circuit schema questions in Service Manuals, Requests, Repair TipsLED's usually need a safety resistor in series to limit current. 20mA is a conventional spec but I would stay below 10mA because quality is...17 replies | 3736 view(s)
-
9th April 2019, 00:38I tried the calculator and clicked 5 percent as acceptable loss. It recommends 18 gauge. Below are links to charts of wire gauges showing safe...32 replies | 4675 view(s)
-
7th April 2019, 23:35BradtheRad replied to a thread efficient led driver circuit? in Hobby Circuits and Small Projects ProblemsThe above schematic is from post #7. It's similar to a boost converter. It is able to output sufficient voltage to drive all six led's in series. A...16 replies | 599 view(s)
-
6th April 2019, 07:56Perhaps the question can be paraphrased: "What happened to the electronics market, since we were accustomed to long-lasting quality parts made by...4 replies | 1456 view(s)
-
6th April 2019, 06:18BradtheRad replied to a thread PEMF and RIFE dual circuit schema questions in Service Manuals, Requests, Repair Tips* It's not common to put a fuse next to an led. It's sensible to put a fuse where it's easy to change and not have to unsolder it from components. ...17 replies | 3736 view(s)
-
5th April 2019, 04:50The charging source must deliver higher voltage than battery voltage, so it can push current into the battery. Your circuit is also exposed to that...32 replies | 4675 view(s)
-
5th April 2019, 04:02BradtheRad replied to a thread 3 phase 400Vac 5000W Full bridge converter power factor correction Buck or Boost type in Power ElectronicsReturning to your plot with the 'funny bumps'. The scope trace has misaligned voltage and current waveforms. It would mean poor power factor. However...39 replies | 3156 view(s)
-
4th April 2019, 07:54BradtheRad replied to a thread Is EM at very low frequency like 20Hz propagates slower? in Electromagnetic Design and SimulationRadio-Electronics magazine did an article about their analytical tests done to compare 'beastie' cables with plain wire. They found...7 replies | 329 view(s)
About BradtheRad
Basic Information
Optional Info
- Biography:
- Born 1953. Some college.
- Location:
- Minneapolis, Minnesota, USA
- Interests:
- Several hobbies and interests.
- Occupation:
- currently unemployed
Statistics
Total Posts
- Total Posts
- 12,575
- Posts Per Day
- 4.27
General Information
- Last Activity
- Today 01:38
- Join Date
- 1st April 2011
Helpful Postings
- Has Rated
- 324
- Post Rated
- Rated helpful 2488 out of 2488 times
83 Friends
Showing Friends 1 to 10 of 83
Experience
Points
- Points
- 51,231
- Level
- 55
Level up completed
- Level up completed
- 31%
- Points required
- 1,319
Activity
- Activity
- 63.0%
- Activity last 30 days
- 97.0%
- Activity last 7 days
- 99.8%
Points
All Points for user
- Points for User
- 7,819
- Points for Reputation
- 5,078
- Points for every day since registration
- 2,492
- Points for Friends
- 249
All Points for threads
- Points for threads
- 1,995
- Points for Threads
- 24
- Points for Social Group Discussions
- 13
- Points for tagging threads
- 1,907
- Points for replies
- 51
All Points for posts
- Points for Posts
- 41,417
- Points for Posts
- 28,915
- Points for Social Group Messages
- 16
- Points for uploading Attachments
- 11
- Average Posts per Day
- 3.00
- Helpful Answers
- 12,475
All Points for miscellaneous
- Points for Misc
- 0
Activities
24th April 2019
- 03:07 BradtheRad has earned 3 Points for Posts points
- 03:07 BradtheRad has earned 1 Points for threads points
- 03:07 BradtheRad has earned 1 Points for User points
22nd April 2019
- 03:06 BradtheRad has earned 1 Points for User points
21st April 2019
- 03:06 BradtheRad has earned 2 Points for User points
- 03:06 BradtheRad has earned 11 Points for Posts points
- 03:06 BradtheRad has earned 1 Points for threads points
20th April 2019
- 03:06 BradtheRad has earned 3 Points for Posts points
- 03:06 BradtheRad has earned 1 Points for User points
18th April 2019
- 03:06 BradtheRad has earned 1 Points for User points
16th April 2019
- 03:07 BradtheRad has earned 1 Points for User points
14th April 2019
- 03:07 BradtheRad has earned 6 Points for Posts points
- 03:07 BradtheRad has earned 1 Points for User points
13th April 2019
- 03:06 BradtheRad has earned 4 Points for User points
- 03:06 BradtheRad has earned 13 Points for Posts points
12th April 2019
- 03:06 BradtheRad has earned 9 Points for Posts points
- 03:06 BradtheRad has earned 1 Points for threads points
- 03:06 BradtheRad has earned 1 Points for User points
11th April 2019
- 03:06 BradtheRad has earned 9 Points for Posts points
- 03:06 BradtheRad has earned 3 Points for threads points
Show Activities from all Users