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Search: Posts Made By: eccerr0r
Forum: Troubleshooting Power Supplies and Power Supply Design Today, 08:23 AM
Replies: 4
Views: 109
Posted By eccerr0r
Re: Samlex SEC-14 linear power supply 13.8VDC 10A repair

Yes it does have short circuit protection, you drew it. The "UVLO logic" indeed is short circuit protection. You probably can easily use that circuitry or even repurpose the components there to...
Forum: General Electronics Technical Discussion Yesterday, 07:59 PM
Replies: 10
Views: 57
Posted By eccerr0r
Re: Decorative Solar Lamp Question

if any of it is in shade, it could drop down to 0.5V, so that could be one thing...
Forum: Troubleshooting Power Supplies and Power Supply Design 05-22-2020, 11:05 PM
Replies: 4
Views: 109
Posted By eccerr0r
Re: Samlex SEC-14 linear power supply 13.8VDC 10A repair

IMHO:
The DNP capacitor should take the other 4.7mF capacitor on the control 22VDC rail, and that now depopulated 4.7mF capacitor can safely go down to 2.2mF. Perhaps this would be slightly cheaper...
Forum: Troubleshooting Power Supplies and Power Supply Design 05-21-2020, 07:00 PM
Replies: 4
Views: 109
Posted By eccerr0r
Re: Samlex SEC-14 linear power supply 13.8VDC 10A repair

At least it has short circuit protection...

Also it should have fairly decent regulation (instead of just having a simple emitter follower regulator. No op amps or LM723 but it does appear to...
Forum: Other Devices with Bad Capacitors 05-20-2020, 10:40 AM
Replies: 3
Views: 132
Posted By eccerr0r
Re: RIFA Class Y Capacitor remedy

These are all noise suppressing capacitors and it may introduce interference to radio/tv devices which may cause unwanted behavior.

The theory is that as a Y-class capacitor it should not fail...
Forum: Troubleshooting Power Supplies and Power Supply Design 05-20-2020, 07:38 AM
Replies: 6
Views: 144
Posted By eccerr0r
Re: Silent APC UPS?

and I thought I was being over sensitive when I can't stand Delta fans...

/me goes back to listening to the computer fan cacophony. Sans Delta fans however.
Forum: General Electronics Technical Discussion 05-20-2020, 07:33 AM
Replies: 51
Views: 841
Posted By eccerr0r
Re: Electric oven tripping circuit breaker after turned on for 3-5 minutes

Thinking about it again, is it really a RCD trip or is it excessive current shorting when hot? The latter is not really likely but still plausible if a large amount of current if the outside shield...
Forum: General Electronics Technical Discussion 05-19-2020, 06:13 PM
Replies: 51
Views: 841
Posted By eccerr0r
Re: Electric oven tripping circuit breaker after turned on for 3-5 minutes

Someone needs to change this thread's index topic from "Circuit Breaker" to "RCD" or "GFCI" or RCCB even ... Ugh... this has been bothering me...

sorry, pet peeve...
Forum: General Computer & Tech Discussion 05-18-2020, 09:36 AM
Replies: 4
Views: 105
Posted By eccerr0r
Re: IBM PC compatible: Who still uses this term?

it's not a big deal anymore because M$ strongarms any potential machine that could run windows. If it could run windows they force that computer maker to sell a copy of windows with it and ensure...
Forum: General Electronics Technical Discussion 05-14-2020, 02:47 PM
Replies: 23
Views: 295
Posted By eccerr0r
Re: Mosfet Power dissipation question

The threshold voltage of the MOSFETs turning on is usually typical and actually is a range hence it's specified as such on the spec sheet. So you typically do have to tweak bias voltages when you...
Forum: General Electronics Technical Discussion 05-14-2020, 01:49 AM
Replies: 14
Views: 289
Posted By eccerr0r
Re: SB315 and SB320 Shottky Diodes Voltages - TV PSU

I wouldn't say SB315=SB3150, but rather SB315 0C40 = SB3150 ...

The board analysis probably would have told me to get at least 60V units but well, if it was all potted it'd be hard to tell...
Forum: General Electronics Technical Discussion 05-13-2020, 04:36 PM
Replies: 23
Views: 295
Posted By eccerr0r
Re: Mosfet Power dissipation question

It appears the NF was supposed to be an "upgrade" to the NE, but these were meant to be run in switch mode. Running them in forward-active analog mode the improved parameters don't matter as much.
...
Forum: General Computer & Tech Discussion 05-11-2020, 08:39 AM
Replies: 58
Views: 1,519
Posted By eccerr0r
Re: New SSD hard drive in laptop computer what a difference in boot time

Well actually for cell phones, cheap is good. I see lots of people toting around phones with cracked screens - this is not fault of the design... but sh*t happens and easier to replace...

I got...
Forum: Troubleshooting Power Supplies and Power Supply Design 05-09-2020, 04:09 PM
Replies: 11
Views: 3,356
Posted By eccerr0r
Re: Fun with a new 100W power supply...

Well, got more "power supplies" to play with. Hoping to play with voltage instead of current...

except now found a new concern: voltage too high for the power supply itself :(

Looks like I...
Forum: General Electronics Technical Discussion 05-09-2020, 04:02 PM
Replies: 14
Views: 289
Posted By eccerr0r
Re: SB315 and SB320 Shottky Diodes Voltages - TV PSU

I suspect that the real part number is "SB3150 C40" :D
In any case yes, 15 V part for 13V is way too low. 20V part is still too low.

I'd think that Schottky diodes are extremely sensitive to...
Forum: General Electronics Technical Discussion 05-09-2020, 03:56 PM
Replies: 51
Views: 841
Posted By eccerr0r
Re: Electric oven tripping circuit breaker after turned on for 3-5 minutes

how about this, all the attachment points of the heater element and the oven, put in a mica or something insulator there that isolates the shell from ground. Then connect one end of the power to the...
Forum: General Computer & Tech Discussion 05-07-2020, 09:17 PM
Replies: 58
Views: 1,519
Posted By eccerr0r
Re: New SSD hard drive in laptop computer what a difference in boot time

Yep, the flimsy machines is indeed designed obsolescence in of itself. The fun is that the consumer *wants* the flimsiness so two birds killed in one stone.

I still use a 10 year old...
Forum: General Electronics Technical Discussion 05-02-2020, 07:30 PM
Replies: 95
Views: 1,596
Posted By eccerr0r
Re: Sending PWM through a relay

Nice thing about freeze drying is that it's pretty much put in and forget, much like desiccant, except you just need to power it. "Cold" is relative, you can do it at 20C just fine, no need to go...
Forum: General Electronics Technical Discussion 05-02-2020, 05:55 PM
Replies: 95
Views: 1,596
Posted By eccerr0r
Re: Sending PWM through a relay

From the constraints you put, freeze or otherwise cold drying is the ideal way to get rid of the water if you don't want to deal with the desiccant...
Forum: General Electronics Technical Discussion 05-02-2020, 12:19 AM
Replies: 95
Views: 1,596
Posted By eccerr0r
Re: Sending PWM through a relay

drying... filament... of... what compound? There are other ways to do a liquid-solid separation?
Forum: Troubleshooting Power Supplies and Power Supply Design 04-27-2020, 02:19 AM
Replies: 8
Views: 236
Posted By eccerr0r
Re: Corsair GS800 fan spinning only on boot

In the EU you can cut a mains cable and use an AC ammeter.

Can't do the same in the USA... since there's no requirement for USA computer equipment to have high power factor... BOOO...have to get a...
Forum: General Electronics Technical Discussion 04-24-2020, 08:36 AM
Replies: 150
Views: 3,776
Posted By eccerr0r
Re: Running a microcontroller in car - power supply aspects

I was caught off guard when working with a Variac where this statement is wrong or at least must be carefully revised...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 04-24-2020, 12:12 AM
Replies: 8
Views: 407
Posted By eccerr0r
Re: Chipquik substitutes - Rose's Metal, Roto136F

not sure how good the used solder is. Yes it's a base mixture of leaded (60Sn40Pb / 63Sn37Pb), really leaded (50Sn50Pb), and leadfree (97Sn+) solder... I'd not be surprised it's back to being close...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 04-21-2020, 09:38 PM
Replies: 8
Views: 407
Posted By eccerr0r
Re: Chipquik substitutes - Rose's Metal, Roto136F

I thought as distributed, Chipquik is wire?

Well a rod would work but that's basically a wire. I just wonder how "clean" it is to use a pellet especially if that pellet is much more than...
Forum: General Capacitor Questions & Issues 04-21-2020, 07:50 PM
Replies: 19
Views: 813
Posted By eccerr0r
Re: Fake Rubycons?

I'm still using the Foxconn board as a PVR with an E6700 and it's down to 3GB RAM. I wonder if getting a Qxxxx is worth it if I can't get 4GB to run in it anymore (Linux 64-bit rustc/gcc/llvm is...
Showing results 1 to 25 of 500

 
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