Easy peasy
Advanced Member level 5
Find latest posts
View Articles
View Blog EntriesMini Statistics
- Join Date
- 15th August 2015
- Last Activity
- Today 03:38
- Blog Entries
- 0
1 Groups
Join Groups 0 Permission Groups
Easy peasy is not a member of any public groups
Awards
No Awards.
Achievements
No achievements.
Recent Visitors
This page has had 11,167 visits
- Tab Content
- Easy peasy's Activity
- About Me
- Friends
- Experience
- Tab Content
-
Older Activity
-
Today, 03:35Easy peasy replied to a thread Will this ceramic capacitor be damaged by overvoltage spikes? in Analog Circuit DesignMLCC are good for quite a bit of over-volts - the acid test is the leakage current at rated volts - when this starts going up - you have...3 replies | 97 view(s) -
Yesterday, 09:24Easy peasy replied to a thread Differential amplifier measure -32V to +32V with single 3.V supply in Analog Circuit Designfor negative input voltages you need a neg supply for the op-amp unless you level shift the op-amp or the input. assuming the CM i/p range of the...7 replies | 152 view(s)
-
13th November 2019, 01:22turn on your fets slower to reduce radiated noise - try 33 ohm for starters ...23 replies | 794 view(s)
-
12th November 2019, 00:30Easy peasy replied to a thread Scoping the post rectifier DC bus in a 240VAC , 100W PFC'd flyback in Power Electronicsit is not a constant thing - certainly for a flyback entering CCM - high mains and full load will be an issue - the most stress on the o/p ...17 replies | 567 view(s)
-
11th November 2019, 23:19Easy peasy replied to a thread Scoping the post rectifier DC bus in a 240VAC , 100W PFC'd flyback in Power ElectronicsX7R has a worst case dissipation factor ( tan delta ) of 2.5% for HV caps The rms voltage during the noisy periods is about 42V rms at sw...17 replies | 567 view(s)
-
11th November 2019, 09:13Wow - so much helpful supporting information - ckt diagram, part numbers, type of chips used ... don't forget only if an output line is...7 replies | 310 view(s)
-
10th November 2019, 22:19Easy peasy replied to a thread Scoping the post rectifier DC bus in a 240VAC , 100W PFC'd flyback in Power ElectronicsYup - emc is always measured at worst case - so min AC line max current & max AC line - max load both cases ....17 replies | 567 view(s)
-
10th November 2019, 19:32Easy peasy replied to a thread Scoping the post rectifier DC bus in a 240VAC , 100W PFC'd flyback in Power Electronicsrunning CCM is a bad idea for RFI noise, as the o/p diode gets quite the hit - this explains the band of noise in pic #1 ...17 replies | 567 view(s)
-
10th November 2019, 09:23Easy peasy replied to a thread Scoping the post rectifier DC bus in a 240VAC , 100W PFC'd flyback in Power ElectronicsThe first picture is a bit odd, it is almost as if you are going from DCM to CCM for the middle (noisy) part - CCM makes the o/p diodes reverse...17 replies | 567 view(s)
-
10th November 2019, 04:28Easy peasy replied to a thread Scoping the post rectifier DC bus in a 240VAC , 100W PFC'd flyback in Power Electronicssorry - brain fade - of course the ferrite Tx is the boost choke - actually flyback Tx performing same function... your constant off...17 replies | 567 view(s)
-
9th November 2019, 20:30Easy peasy replied to a thread Scoping the post rectifier DC bus in a 240VAC , 100W PFC'd flyback in Power ElectronicsWhat is the boost choke --- ? the PFC flyback is obviously doing more work at higher loads / higher mains, the associated volt ripple on the...17 replies | 567 view(s)
-
9th November 2019, 07:05Easy peasy replied to a thread Scoping the post rectifier DC bus in a 240VAC , 100W PFC'd flyback in Power Electronicsit appears the PFC is somehow going to a lower sw freq once it passes a certain voltage ( or current ) and this is causing the increase in Vripple...17 replies | 567 view(s)
-
7th November 2019, 20:28try running off 6V initially - this xtor does not have a high Vce, class E will ring the collector up to 2 x Vin...12 replies | 415 view(s)
-
6th November 2019, 21:24Easy peasy replied to a thread NPN having its VBE protected against reverse voltage....but unecessary? in Analog Circuit DesignI have never seen a BJT fall to un-useable levels of gain through being OCCASIONALLY used as a zener, when it is used as a zener - the gain...21 replies | 698 view(s)
-
6th November 2019, 18:17Easy peasy replied to a thread NPN having its VBE protected against reverse voltage....but unecessary? in Analog Circuit Designyou seem to be allowing my point - which is - by far most of the B-E junction is buried - away from any oxides ... ?21 replies | 698 view(s)
-
6th November 2019, 10:44Easy peasy replied to a thread IFC TG179 TO-92 (transistor) in Service Manuals, Requests, Repair Tipslikely npn - as the base is in the middle, Collector on the left ( flat down, pins towards you ) emitter on right - but this is just...6 replies | 1105 view(s)
-
6th November 2019, 06:05Easy peasy replied to a thread NPN having its VBE protected against reverse voltage....but unecessary? in Analog Circuit Designsurely in a BJT the metallisation goes straight onto the Si, then if you want to protect the Al metal, you form an oxide on that, any non...21 replies | 698 view(s)
-
6th November 2019, 02:53Easy peasy replied to a thread Symmetric Source + 10V and -10V - help me !! in Hobby Circuits and Small Projects Problemsthe 12V to +9V could be done with a TLC555 IC and a sepic power stage ( to allow for dips when starting ) - easy for 800mA the 12V to...4 replies | 432 view(s)
-
5th November 2019, 21:30Easy peasy replied to a thread Longer deadtime or blanking time between two mosfets of one leg phase U or v or w in Power ElectronicsCan the longer dead time cause distortion in output waveforms? YES And as a result torque ripple?? YES - but usually quite small And...4 replies | 266 view(s)
-
5th November 2019, 21:28Easy peasy replied to a thread Reverse recovery losses in synchronous rectifier in Power ElectronicsDear smazzer, you asked several questions, which in particular do you consider was not answered ? - - - Updated - - - surely this was the...7 replies | 335 view(s)
-
5th November 2019, 10:19Easy peasy replied to a thread Reverse recovery losses in synchronous rectifier in Power ElectronicsWell, yes, as you must have a finite dead time - the losses in the bottom fet are related to the dead time - too long a dead time and the...7 replies | 335 view(s)
-
5th November 2019, 10:09Easy peasy replied to a thread NPN having its VBE protected against reverse voltage....but unecessary? in Analog Circuit DesignAre there many oxides in a BJT ...? I would have thought not - in CMOS maybe ...21 replies | 698 view(s)
-
5th November 2019, 02:41Easy peasy replied to a thread NPN having its VBE protected against reverse voltage....but unecessary? in Analog Circuit DesignDear std_match, assuming the junction remains below 115 deg C how EXACTLY does zener operation reduce the gain of the device? natural drift...21 replies | 698 view(s)
-
4th November 2019, 23:08above ~ 100 watt, layout, RFI, and transformer construction issues tend to dominate and need an experienced power electronics designer - the...4 replies | 206 view(s)
-
4th November 2019, 23:01Can your 3v3 source supply enough power ...? - - - Updated - - - At 900Hz you'll need a larger storage cap on the boost .. - - - Updated - -...7 replies | 259 view(s)
-
4th November 2019, 10:12For ER28 with 2.5mm centre pole gap ( or 1.25mm right thru ) for 55uH and 25Apk the Bpk = 459mT which is too high, the gap needs to...23 replies | 794 view(s)
-
4th November 2019, 05:53Easy peasy replied to a thread NPN having its VBE protected against reverse voltage....but unecessary? in Analog Circuit DesignOh yes - the 431 could control the npn directly producing the 8v3 @ 10mA ....21 replies | 698 view(s)
-
4th November 2019, 01:26Easy peasy replied to a thread NPN having its VBE protected against reverse voltage....but unecessary? in Analog Circuit Designthe emitter base will zener at 6 - 7 volts the current limited by the 100E resistance and the output Z of the op amp assuming the emitter is...21 replies | 698 view(s)
-
4th November 2019, 00:05do you have cell balancing for the 4 "cells" i.e. if one "cell" goes too high or low you can shift current to the other cells or stop the...2 replies | 630 view(s)
-
4th November 2019, 00:01Easy peasy replied to a thread [SOLVED] Ohm's Law and Power calculation problem in Elementary Electronic QuestionsYou can calculate instantaneous power at a single point in time - then integrate, then average over larger portions of time but the simple...30 replies | 1107 view(s)
About Easy peasy
Basic Information
Areas of Interest
- Area of specialization:
- Power Electronics
Optional Info
- Biography:
- founder MagnetPowerNZ Ltd
- Location:
- Melbourne
- Occupation:
- engineer
Statistics
Total Posts
- Total Posts
- 1,878
- Posts Per Day
- 1.21
General Information
- Last Activity
- Today 03:38
- Join Date
- 15th August 2015
Helpful Postings
- Has Rated
- 152
- Post Rated
- Rated helpful 693 out of 693 times
4 Friends
Showing Friends 1 to 4 of 4
Experience
Points
- Points
- 11,536
- Level
- 25
Level up completed
- Level up completed
- 77%
- Points required
- 214
Activity
- Activity
- 86.0%
- Activity last 30 days
- 99.7%
- Activity last 7 days
- 91.0%
Points
All Points for user
- Points for User
- 2,184
- Points for Reputation
- 1,396
- Points for every day since registration
- 776
- Points for Friends
- 12
All Points for threads
- Points for threads
- 360
- Points for Threads
- 3
- Points for tagging threads
- 354
- Points for replies
- 3
All Points for posts
- Points for Posts
- 8,991
- Points for Posts
- 5,523
- Average Posts per Day
- 1.00
- Helpful Answers
- 3,465
- Solved Threads
- 3
All Points for miscellaneous
- Points for Misc
- 0
Activities
15th November 2019
- 03:07 Easy peasy has earned 3 Points for Posts points
- 03:07 Easy peasy has earned 1 Points for User points
13th November 2019
- 03:07 Easy peasy has earned 7 Points for User points
- 03:07 Easy peasy has earned 18 Points for Posts points
12th November 2019
- 03:07 Easy peasy has earned 9 Points for Posts points
11th November 2019
- 03:06 Easy peasy has earned 12 Points for Posts points
- 03:06 Easy peasy has earned 1 Points for threads points
- 03:06 Easy peasy has earned 1 Points for User points
10th November 2019
- 03:07 Easy peasy has earned 4 Points for User points
- 03:07 Easy peasy has earned 16 Points for Posts points
- 03:07 Easy peasy has earned 1 Points for threads points
9th November 2019
- 03:06 Easy peasy has earned 1 Points for User points
8th November 2019
- 03:07 Easy peasy has earned 3 Points for Posts points
7th November 2019
- 03:07 Easy peasy has earned 7 Points for User points
- 03:07 Easy peasy has earned 27 Points for Posts points
- 03:07 Easy peasy has earned 1 Points for threads points
6th November 2019
- 03:07 Easy peasy has earned 20 Points for Posts points
- 03:07 Easy peasy has earned 2 Points for threads points
- 03:07 Easy peasy has earned 2 Points for User points
5th November 2019
- 03:07 Easy peasy has earned 20 Points for Posts points
Show Activities from all Users