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Search: Posts Made By: stj
Forum: Troubleshooting Game Consoles & Other Weird Devices Today, 03:03 PM
Replies: 3
Views: 29
Posted By stj
Re: Speed controller for golf trolley

damn, i though you meant little electric cars.
so it's a motorised bag?
golfers are lazy bastards! :D
Forum: General Electronics Technical Discussion Today, 12:59 PM
Replies: 21
Views: 216
Posted By stj
Re: Has anyone had any sucess with HHO as a fuel source?

you shouldnt let so-called laws of physics stop idea's or research.
not unless you want to see an end to discoveries.
tesla warned against such behaviour.
most of those "laws" are based on...
Forum: Troubleshooting Game Consoles & Other Weird Devices Today, 09:10 AM
Replies: 3
Views: 29
Posted By stj
Re: Speed controller for golf trolley

sounds fun.
what are the motors like? single phase brushed, or 3/5phase brushless??
Forum: Troubleshooting Power Supplies and Power Supply Design Today, 09:08 AM
Replies: 2
Views: 49
Posted By stj
Re: please help identify IC, repairing supermicropPSU

seconded,
LM324 quad op-amp.

btw, it may be better to replace it with LM224 if it's failed.
LM224 is the higher temperature version.
Forum: General Electronics Technical Discussion Yesterday, 08:39 PM
Replies: 18
Views: 161
Posted By stj
Re: Need help to "convert" a washing machine

pictures are terrible - what the hell did you use??
Forum: General Electronics Technical Discussion Yesterday, 08:31 PM
Replies: 27
Views: 278
Posted By stj
Re: What do you think about this meter Feedback need

sort-of,
the alternator is a rectified (but not smoothed) 3phase generator.
the dips in the output should be evenly spaced, if not then a diode or winding may be bad.
Forum: General Electronics Technical Discussion Yesterday, 10:56 AM
Replies: 18
Views: 161
Posted By stj
Re: Need help to "convert" a washing machine

what's the crystal frequency on the microcontroller??
if they are fucking around, it may be configured by a jumper - but your pics are too low-res to zoom into.
Forum: General Electronics Technical Discussion Yesterday, 09:20 AM
Replies: 27
Views: 278
Posted By stj
Re: What do you think about this meter Feedback need

no, not logging.
if you put a standard meter on a car supply, it will say 12-14v
but if you put a meter with a waveform display you can see if the alternator is failing because you can see the dips...
Forum: Troubleshooting Game Consoles & Other Weird Devices Yesterday, 07:59 AM
Replies: 40
Views: 422
Posted By stj
Re: Leader lbo 508 oscilloscope help

that hook is for setting the trimmer in the probe.
Forum: General Electronics Technical Discussion Yesterday, 07:57 AM
Replies: 18
Views: 161
Posted By stj
Re: Need help to "convert" a washing machine

a 20% difference in frequency may mess timing up - but unlikely as they usually use a switching psu running an atmel microcontroller with internal rtc,
but it shouldnt stop the machine starting up!
Forum: General Electronics Technical Discussion Yesterday, 07:52 AM
Replies: 27
Views: 278
Posted By stj
Re: What do you think about this meter Feedback need

the point of the feature is to see if the power is stable, or if it's being effected by something.
it's actually very good in some situations.
Forum: General Computer Discussion 01-21-2019, 05:20 PM
Replies: 3,403
Views: 579,330
Posted By stj
Forum: General Computer Discussion 01-21-2019, 03:27 PM
Replies: 3,403
Views: 579,330
Posted By stj
Re: best cheap/free scores 1.1

damn, i would have loved that mac, it's the last of the candy-coloured ppc clamshell ones isnt it!!
btw, common fault is bad soldering on the charging socket.
Forum: General Electronics Technical Discussion 01-21-2019, 03:21 PM
Replies: 26
Views: 213
Posted By stj
Re: LED Backlight Tester model A : The world first battery TV led tester

i think a zener can be tested at <5ma

the highest voltage zener i come across is 145v,
the meter i will use (DT830) has a 200v scale.
Forum: General Electronics Technical Discussion 01-21-2019, 11:52 AM
Replies: 26
Views: 213
Posted By stj
Re: LED Backlight Tester model A : The world first battery TV led tester

no ozone generator,
i need a very compact 200vdc psu that runs from 9v or less for my zener diode tester project :)
Forum: Custom Tweaks, Modifications, and Revisions 01-21-2019, 11:12 AM
Replies: 2
Views: 128
Posted By stj
Re: TV160 LCD controller tester: Self-powering mod

why not just tape a powerbank to the back of it??
Forum: General Electronics Technical Discussion 01-21-2019, 08:05 AM
Replies: 26
Views: 213
Posted By stj
Re: LED Backlight Tester model A : The world first battery TV led tester

i need that for something else,
where do you get the bug zapper things?

can you show the other side of the pcb?
Forum: Troubleshooting Power Supplies and Power Supply Design 01-20-2019, 02:24 PM
Replies: 8
Views: 149
Posted By stj
Forum: Troubleshooting Power Supplies and Power Supply Design 01-20-2019, 11:08 AM
Replies: 8
Views: 149
Posted By stj
Forum: Troubleshooting Power Supplies and Power Supply Design 01-19-2019, 05:48 PM
Replies: 6
Views: 92
Posted By stj
Re: How to easily remove silicon from board/components?

silicone rubber is resistant to just about anything - that;s why it's used for washers and o-rings.
Forum: Troubleshooting Power Supplies and Power Supply Design 01-19-2019, 02:45 PM
Replies: 6
Views: 92
Posted By stj
Re: How to easily remove silicon from board/components?

small flat ended screwdriver works for me.
Forum: General Computer Discussion 01-19-2019, 11:00 AM
Replies: 25
Views: 558
Posted By stj
Re: reset password windows 10

you see how much trouble win10 is!!
it even gets people who dont use it to attack each other! :group:
Forum: General Electronics Technical Discussion 01-18-2019, 09:43 PM
Replies: 21
Views: 216
Posted By stj
Forum: General Electronics Technical Discussion 01-18-2019, 02:45 PM
Replies: 21
Views: 216
Posted By stj
Re: Has anyone had any sucess with HHO as a fuel source?

actually water is fuel - chemically it is perfect, hydrogen and oxidizer.
we just need to learn how to break the molecular bonds more easily.

a lot of research is going on with high voltages and...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 01-18-2019, 08:22 AM
Replies: 2
Views: 97
Posted By stj
Re: BMW i-drive

2015 cic.
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