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Search: Posts Made By: stj
Forum: Equipment Usage, Soldering, Techniques, and Reviews Yesterday, 04:41 PM
Replies: 89
Views: 1,328
Posted By stj
Re: DPS5020 dual power supply build

actually rectifiers can short out - i'v seen it a number of times.
Forum: Equipment Usage, Soldering, Techniques, and Reviews Yesterday, 04:40 PM
Replies: 171
Views: 6,007
Posted By stj
Re: Soldering station thoughts and guidelines

the function of small tips is not to solder fine parts, it's to avoid other stuff nearby.
Forum: Equipment Usage, Soldering, Techniques, and Reviews Yesterday, 12:43 PM
Replies: 89
Views: 1,328
Posted By stj
Re: DPS5020 dual power supply build

just remember that unlike fuses, most circuit breakers only work on AC - or atleast they only trip where they say on AC.
Forum: Equipment Usage, Soldering, Techniques, and Reviews Yesterday, 12:41 PM
Replies: 171
Views: 6,007
Posted By stj
Re: Soldering station thoughts and guidelines

not a problem, mine came in a pack of 3 :tongue:
Forum: General Electronics Technical Discussion 08-19-2019, 06:54 PM
Replies: 18
Views: 179
Posted By stj
Re: Upgrading my E-bike. Building a battery pack

ii bet they charge them like a bastard to get them back in service asap.
Forum: General Electronics Technical Discussion 08-19-2019, 11:04 AM
Replies: 18
Views: 179
Posted By stj
Re: Upgrading my E-bike. Building a battery pack

https://www.youtube.com/watch?v=BjDEY5Hh-_o
lol
Forum: General Electronics Technical Discussion 08-19-2019, 10:59 AM
Replies: 11
Views: 424
Posted By stj
Re: Will this work?

any transistor will do - the current is pretty low.
and a 555 timer.
Forum: General Electronics Technical Discussion 08-19-2019, 03:54 AM
Replies: 18
Views: 179
Posted By stj
Re: Upgrading my E-bike. Building a battery pack

hey yourself some lockpicks and come to london for a day, there are bikes with big battery-cases dumped all over the fucking place.
take the power-packs and run!! :D
btw, have a big aluminium box...
Forum: General Electronics Technical Discussion 08-19-2019, 03:50 AM
Replies: 11
Views: 424
Posted By stj
Re: Will this work?

i think he wants a pwm speed controller.
Forum: General Electronics Technical Discussion 08-18-2019, 12:43 PM
Replies: 18
Views: 179
Posted By stj
Re: Upgrading my E-bike. Building a battery pack

or samsung sleeves on trustfire cells???
Forum: General Electronics Technical Discussion 08-18-2019, 06:22 AM
Replies: 18
Views: 179
Posted By stj
Re: Upgrading my E-bike. Building a battery pack

get yourself some "705" silicone from ali, you dont want rain in those connectors or any other parts.
Forum: General Computer Discussion 08-18-2019, 02:55 AM
Replies: 3,876
Views: 625,795
Posted By stj
Re: best cheap/free scores 1.1

something else you obviously got that i dont - a lot of storage space!! :(
Forum: General Electronics Technical Discussion 08-18-2019, 02:52 AM
Replies: 11
Views: 424
Posted By stj
Re: Will this work?

why??
why are you trying to switch both poles????
Forum: Troubleshooting Game Consoles & Other Weird Devices 08-18-2019, 02:51 AM
Replies: 16
Views: 555
Posted By stj
Re: Sega mega driveII AV problem

well we are stabbing in the dark here.
we know what a tv expects,
but we have no idea what voltages are coming out of the console.
testing should really be done with short wires too - for the...
Forum: Troubleshooting Game Consoles & Other Weird Devices 08-17-2019, 02:41 PM
Replies: 16
Views: 555
Posted By stj
Re: Sega mega driveII AV problem

this is interesting:
http://members.optusnet.com.au/eviltim/gamescart/gamecube.png
using a cap to change the sync level
Forum: Troubleshooting Game Consoles & Other Weird Devices 08-17-2019, 02:34 PM
Replies: 16
Views: 555
Posted By stj
Re: Sega mega driveII AV problem

that's close, but also put a resistor in series with the sync wire to lower the voltage.
Forum: Equipment Usage, Soldering, Techniques, and Reviews 08-17-2019, 02:30 PM
Replies: 35
Views: 13,379
Posted By stj
Re: [FAQ] Atten 858d problem S-E (or 5-E) or stuck in 498'C.

so what - you hold both buttons and it uses the set temp as default?

i'm pretty sure mine holds the last setting until you change it again.
Forum: General Electronics Technical Discussion 08-17-2019, 04:25 AM
Replies: 42
Views: 454
Posted By stj
Re: Delay on-instant off with 555 timer

schuko is 16A?? or are you using CEE/IEC60309 plugs??
Forum: Equipment Usage, Soldering, Techniques, and Reviews 08-17-2019, 03:03 AM
Replies: 35
Views: 13,379
Posted By stj
Re: [FAQ] Atten 858d problem S-E (or 5-E) or stuck in 498'C.

the replacement formware thing is interesting, but i have not tried it - my unit works fine as it is.
although i did think about changing it so i could use an oled display! :D
Forum: Troubleshooting Game Consoles & Other Weird Devices 08-17-2019, 02:56 AM
Replies: 16
Views: 555
Posted By stj
Re: Sega mega driveII AV problem

https://pinouts.ru/Home/Scart_pinout.shtml

replace the 75ohm resistor with something higher,
and put the 75 ohm resistor between sync and ground at the scart end.
Forum: General Electronics Technical Discussion 08-17-2019, 02:50 AM
Replies: 42
Views: 454
Posted By stj
Re: Delay on-instant off with 555 timer

24A is too much, european outlets are only about 12A.

the resistor has to start high - to limit the inrush, then slowly go down in value so the voltage rises to the full level.
so you need an NTC...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 08-16-2019, 01:24 PM
Replies: 89
Views: 1,328
Posted By stj
Re: DPS5020 dual power supply build

strip the chuck and clean and grease it.
it's just 2 halves with the jaws seperated by springs in it.
maybe a spring cracked.
Forum: Equipment Usage, Soldering, Techniques, and Reviews 08-16-2019, 01:22 PM
Replies: 35
Views: 13,379
Posted By stj
Re: [FAQ] Atten 858d problem S-E (or 5-E) or stuck in 498'C.

only a software function - try picking it up, putting it back, then waiting.
they do have a delay.
Forum: General Electronics Technical Discussion 08-16-2019, 01:19 PM
Replies: 42
Views: 454
Posted By stj
Re: Delay on-instant off with 555 timer

NTC value would have to be calculated based on the load current so it operates at a reasonable speed and doesnt just sit there not heating up, or worse yet - go nuclear on you!

as for switch and...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 08-16-2019, 11:49 AM
Replies: 35
Views: 13,379
Posted By stj
Re: [FAQ] Atten 858d problem S-E (or 5-E) or stuck in 498'C.

if the cpu pin is changing between 5v and 0v when you put the handle on the holder then the cpu is bad i imagine.
otherwise you need to check the reed isnt cracked etc.
Showing results 1 to 25 of 500

 
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