BradtheRad
Super Moderator
Find latest posts
View Articles
View Blog EntriesMini Statistics
- Join Date
- 1st April 2011
- Last Activity
- Today 06:02
- Blog Entries
- 0
More 85 Friends
1 Groups
Join Groups 0 Permission Groups
BradtheRad is not a member of any public groups
Awards
No Awards.
Achievements
7 years registered- Tab Content
- BradtheRad's Activity
- About Me
- Friends
- Experience
- Tab Content
-
Older Activity
-
Yesterday, 08:00The capacitor Farad value can not be too high of course, lest it pass too much current and destroy itself. Probably 1/10 Watt is reasonable....8 replies | 194 view(s) -
Yesterday, 07:39Another possibility is a choke filter. This is useful for smoothing current spikes which are typical with capacitor filters. A choke might go on the...12 replies | 413 view(s)
-
Yesterday, 05:17thannara123 replied to a thread Require a Desgin of A MOSFET based Switch , for study purpose . in Power ElectronicsSir, Now cleared the doubts learned charactrestics lot of . And I Concluded that the desgin as follows . VDD =12Volt ...20 replies | 1251 view(s) -
21st January 2020, 06:19To illustrate here's a simple simulation of 2000uF charging through resistor and diode from 240 VAC source (peaks=340V). Timeframe 1 second. ...12 replies | 413 view(s)
-
20th January 2020, 09:25BradtheRad replied to a thread Voltage input to BLDC inverters on tethered drone? in Elementary Electronic QuestionsThis calculates to average 1A current draw, 400 ohms impedance (in round numbers). That amount has to be achieved by reactive impedance (coils with...11 replies | 542 view(s)
-
20th January 2020, 08:32Suppose you pre-charge the capacitors directly from an auxiliary power supply? Install a plain diode and resistor, calculated so caps take a second...12 replies | 413 view(s)
-
20th January 2020, 03:32BradtheRad replied to a thread Testing Amps on rewound microwave transformer in Elementary Electronic QuestionsYes, if your load doesn't change resistance in use. Incandescent lamps increase in resistance when they glow. Normally this throws off your...17 replies | 877 view(s)
-
20th January 2020, 02:54Common base mode is suitable. It's tricky to adjust bias voltage and current, in order to find a good operating point. Simple simulation using...9 replies | 520 view(s)
-
19th January 2020, 08:25BradtheRad replied to a thread Voltage input to BLDC inverters on tethered drone? in Elementary Electronic QuestionsI wouldn't be surprised if the drone has its own step-down converter. High current is needed in R/C aircraft. 25 years ago electric planes typically...11 replies | 542 view(s)
-
18th January 2020, 08:43thannara123 replied to a thread ADC Value gets changed when a Digital output enables in Power Electronicselectrical noise may lead ADC value2 replies | 269 view(s)
-
18th January 2020, 06:05BradtheRad replied to a thread Voltage input to BLDC inverters on tethered drone? in Elementary Electronic QuestionsTether wires appear lightweight and thin, implying low Amperes. I imagine it takes from 100 to 300 watts to lift a drone cam. And it seems convenient...11 replies | 542 view(s)
-
18th January 2020, 04:01BradtheRad replied to a thread Testing Amps on rewound microwave transformer in Elementary Electronic QuestionsSimulation of transformer with various loads. Switches were closed in sequence. Scope trace travels to the left. Notice volt reading drops as current...17 replies | 877 view(s)
-
17th January 2020, 17:17thannara123 replied to a thread Require a Desgin of A MOSFET based Switch , for study purpose . in Power ElectronicsHai sir i don't have confusion as you said . I know ohmic or linear or triode region is the low resistance mode of the MOSFET operation. Where the...20 replies | 1251 view(s)
-
17th January 2020, 12:01thannara123 replied to a thread Require a Desgin of A MOSFET based Switch , for study purpose . in Power ElectronicsThanks , But then Is the MOSFET works on cutoff and Ohmic region ? or cutoff and stauration region?20 replies | 1251 view(s)
-
17th January 2020, 08:20One diode pointing downward provides 0.6V regulated voltage. Two diodes yield 1.2V. (Similar principle to a zener diode.) A safety resistor is...20 replies | 747 view(s)
-
17th January 2020, 07:44BradtheRad replied to a thread Testing Amps on rewound microwave transformer in Elementary Electronic QuestionsOne way is to attach various resistors and measure AC volts. That gives you an idea when the secondary output voltage starts to drop, thus letting...17 replies | 877 view(s)
-
17th January 2020, 04:38thannara123 replied to a thread Require a Desgin of A MOSFET based Switch , for study purpose . in Power ElectronicsHow can i attain in ohmic / Triode region ? As per the data sheet The Vds should be in the range of 2.5volt for the ohmic region. and Vgs is 5volt...20 replies | 1251 view(s)
-
16th January 2020, 15:49thannara123 replied to a thread Require a Desgin of A MOSFET based Switch , for study purpose . in Power Electronicsconfused a little :-? Mesuare the Vds when it ON it gives 12mv and 10.5mv for V1 =12v and V1 = 10 respectively .20 replies | 1251 view(s)
-
15th January 2020, 17:40thannara123 replied to a thread Require a Desgin of A MOSFET based Switch , for study purpose . in Power ElectronicsAnd Comonly what type of protections are required for a MOSFET.20 replies | 1251 view(s)
-
15th January 2020, 15:29I am intrested :thumbsup:11 replies | 808 view(s)
-
15th January 2020, 14:53thannara123 replied to a thread Require a Desgin of A MOSFET based Switch , for study purpose . in Power ElectronicsIf Vgs is 11volt and Vds is 10 volt it saying that Ohmic region . As per the ohmic and saturation region the plots shows no diffrents why so . ...20 replies | 1251 view(s)
-
14th January 2020, 13:16Why should there be a limit on the velocity?1 replies | 307 view(s)
-
14th January 2020, 13:10With the PFD in there, you cannot do it. Period. What I used to do was create a linear model for the components. PFD ==> VCVS with a gain of...6 replies | 490 view(s)
-
14th January 2020, 10:17BradtheRad replied to a thread Earth leakage Detection "positive" as well as "Negative" >30mA. in Professional Hardware and Electronics DesignOrdinary multimeters like I've used detect current as DC only. Here's a handy trick to measure AC current: Insert a resistor inline, and measure AC...5 replies | 582 view(s)
-
14th January 2020, 09:14BradtheRad replied to a thread [SOLVED] Need very basic R-C "delay off" circuit in Hobby Circuits and Small Projects ProblemsSimple diode-resistor-capacitor networks create a gradual ramp-wave when you input a sudden transition. The principle behind the downward ramp...7 replies | 468 view(s)
-
12th January 2020, 05:50A voltage doubler can provide your step-up ratio, almost 2x. Two voltage doublers acting symmetrically provide AC to the load. Simulation using...5 replies | 539 view(s)
-
11th January 2020, 13:41thannara123 replied to a thread Require a Desgin of A MOSFET based Switch , for study purpose . in Power ElectronicsThen is correct My aproximation?20 replies | 1251 view(s)
-
11th January 2020, 12:59thannara123 replied to a thread Require a Desgin of A MOSFET based Switch , for study purpose . in Power ElectronicsConsider this only for learning purpose . I am Choosing N Channel MOSFET 90NF03L https://www.st.com/resource/en/datasheet/stp90nf03l.pdf As...20 replies | 1251 view(s)
-
11th January 2020, 04:49thannara123 started a thread Require a Desgin of A MOSFET based Switch , for study purpose . in Power ElectronicsI am stauding the MOSFET caharcterstics , May I get a Desgin for a MOSFET based Switch for ON and OFF . with least resistance and maximum...20 replies | 1251 view(s)
-
10th January 2020, 13:45thannara123 replied to a thread [SOLVED] Technique behind the Charging and Inverting Function of an Inverter in Power ElectronicsIt charges ,The Boost coil is the secondary of the Transformer ,That is the Tehniuqe6 replies | 516 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
- 13,060
- Posts Per Day
- 4.06
General Information
- Last Activity
- Today 06:02
- Join Date
- 1st April 2011
Helpful Postings
- Has Rated
- 347
- Post Rated
- Rated helpful 2589 out of 2589 times
85 Friends
Showing Friends 1 to 10 of 85
Experience
Points
- Points
- 53,520
- Level
- 56
Level up completed
- Level up completed
- 52%
- Points required
- 930
Activity
- Activity
- 90.0%
- Activity last 30 days
- 72.0%
- Activity last 7 days
- 79.0%
Points
All Points for user
- Points for User
- 8,169
- Points for Reputation
- 5,282
- Points for every day since registration
- 2,632
- Points for Friends
- 255
All Points for threads
- Points for threads
- 2,237
- Points for Threads
- 26
- Points for Social Group Discussions
- 17
- Points for tagging threads
- 2,141
- Points for replies
- 53
All Points for posts
- Points for Posts
- 43,114
- Points for Posts
- 30,103
- Points for Social Group Messages
- 20
- Points for uploading Attachments
- 11
- Average Posts per Day
- 3.00
- Helpful Answers
- 12,980
All Points for miscellaneous
- Points for Misc
- 0
Activities
23rd January 2020
- 03:06 BradtheRad has earned 6 Points for Posts points
- 03:06 BradtheRad has earned 1 Points for threads points
- 03:06 BradtheRad has earned 1 Points for User points
22nd January 2020
- 03:06 BradtheRad has earned 4 Points for User points
- 03:06 BradtheRad has earned 13 Points for Posts points
21st January 2020
- 03:06 BradtheRad has earned 5 Points for User points
- 03:06 BradtheRad has earned 2 Points for threads points
- 03:06 BradtheRad has earned 19 Points for Posts points
20th January 2020
- 03:05 BradtheRad has earned 2 Points for User points
- 03:05 BradtheRad has earned 11 Points for Posts points
- 03:05 BradtheRad has earned 1 Points for threads points
19th January 2020
- 03:06 BradtheRad has earned 3 Points for User points
- 03:06 BradtheRad has earned 11 Points for Posts points
- 03:06 BradtheRad has earned 1 Points for threads points
18th January 2020
- 03:06 BradtheRad has earned 6 Points for Posts points
17th January 2020
- 03:06 BradtheRad has earned 1 Points for User points
15th January 2020
- 03:06 BradtheRad has earned 6 Points for Posts points
- 03:06 BradtheRad has earned 1 Points for threads points
- 03:06 BradtheRad has earned 1 Points for User points
13th January 2020
- 03:06 BradtheRad has earned 3 Points for Posts points
Show Activities from all Users