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Search: Posts Made By: stj
Forum: General Electronics Technical Discussion Today, 08:04 AM
Replies: 3
Views: 29
Posted By stj
Re: 120vdc motor question

look at the ones on ali-express
if you have the money - look at the Bafang - it fits in front of the pedals and links there.
Forum: General Electronics Technical Discussion Today, 08:03 AM
Replies: 3
Views: 11
Posted By stj
Re: Can I convert the head of a 250v plug to 110v?

you can chop it, but if the device is just a heater it will take longer to heat up at 110v
Forum: General Capacitor Questions & Issues Yesterday, 03:37 AM
Replies: 24
Views: 548
Posted By stj
Re: Macintosh polymer recap & ESR considerations

well 13mm is wrong, the official size is 12.5mm,
if your trying to size-match there is nothing wrong with increasing the voltage to 16 or even 25v

have you seen this chart?
Forum: Troubleshooting Audio Equipment Yesterday, 03:31 AM
Replies: 110
Views: 15,368
Posted By stj
Re: Yamaha Electric Piano CLP550 no keyboard output

you backup everything you can, because right now there is very little dumped.
Forum: Equipment Usage, Soldering, Techniques, and Reviews 09-13-2019, 08:17 PM
Replies: 32
Views: 3,875
Posted By stj
Re: Using my CH341A.

no, it supports 5v chips, it's not intended for large chips like serial-flash
Forum: General Capacitor Questions & Issues 09-13-2019, 08:15 PM
Replies: 24
Views: 548
Posted By stj
Re: Macintosh polymer recap & ESR considerations

damn, well i think YXF is still sold.
Forum: General Capacitor Questions & Issues 09-13-2019, 03:24 AM
Replies: 24
Views: 548
Posted By stj
Re: Macintosh polymer recap & ESR considerations

i meant the YXA,B,F series :)

you obviously speak japanese - why not email Rubycon and ask them if they have old datasheets or compatability tables?
Forum: General Capacitor Questions & Issues 09-13-2019, 03:13 AM
Replies: 24
Views: 548
Posted By stj
Re: Macintosh polymer recap & ESR considerations

well get the datasheet and see if the size you want even exists i suppose.
Forum: Troubleshooting Audio Equipment 09-13-2019, 03:11 AM
Replies: 110
Views: 15,368
Posted By stj
Re: Yamaha Electric Piano CLP550 no keyboard output

i have a parallel port programmer,
it runs fine on a dell optiplex755 dual-core i found in the street.
i use freedos with it. and it runs an ftp server to get the files from the other machines....
Forum: Troubleshooting Audio Equipment 09-12-2019, 12:25 PM
Replies: 110
Views: 15,368
Posted By stj
Re: Yamaha Electric Piano CLP550 no keyboard output

if you have an electric desoldering station i recommend you desolder and backup the roms.
if you search this forum there are a number of yamaha threads - all relating to roms failing!!
Forum: General Electronics Technical Discussion 09-12-2019, 12:22 PM
Replies: 40
Views: 818
Posted By stj
Re: Getting into PLCs

still waiting for the board shots - i'm genuinly curious whats in these.
Forum: General Capacitor Questions & Issues 09-12-2019, 03:41 AM
Replies: 24
Views: 548
Posted By stj
Re: Macintosh polymer recap & ESR considerations

check YX range, YXA is highest esr, YXF is probably good for the job.
Forum: General Electronics Technical Discussion 09-11-2019, 03:24 PM
Replies: 40
Views: 818
Posted By stj
Re: Getting into PLCs

open it then :)
maybe it uses seperate memory and you can recover the password & stuff.
Forum: Troubleshooting Power Supplies and Power Supply Design 09-11-2019, 03:04 AM
Replies: 2
Views: 53
Posted By stj
Forum: Equipment Usage, Soldering, Techniques, and Reviews 09-10-2019, 02:18 PM
Replies: 32
Views: 3,875
Posted By stj
Re: Using my CH341A.

just use 5v from usb or ps2 connectors.
Forum: Equipment Usage, Soldering, Techniques, and Reviews 09-10-2019, 09:03 AM
Replies: 32
Views: 3,875
Posted By stj
Re: Using my CH341A.

or get 5v from a usb port.
Forum: Equipment Usage, Soldering, Techniques, and Reviews 09-10-2019, 09:02 AM
Replies: 32
Views: 3,875
Posted By stj
Re: Using my CH341A.

you need the voltage regulator, the serial port outputs 12v.
well it should but modern stuff is closer to 9v but it will still fry your chip!
Forum: Equipment Usage, Soldering, Techniques, and Reviews 09-10-2019, 02:52 AM
Replies: 32
Views: 3,875
Posted By stj
Re: Using my CH341A.

you only need what will be used, so really just 5v
Forum: Equipment Usage, Soldering, Techniques, and Reviews 09-09-2019, 04:52 PM
Replies: 32
Views: 3,875
Posted By stj
Re: Using my CH341A.

maybe you should look at PONY PROG,
Forum: Troubleshooting Audio Equipment 09-09-2019, 08:07 AM
Replies: 2
Views: 40
Posted By stj
Re: CLP-50 Yamaha Clavinova keyboard

CR1
green digital board.
dead center - just left of the 64pin yamaha ym2405's :)
Forum: General Capacitor Questions & Issues 09-09-2019, 08:04 AM
Replies: 12
Views: 303
Posted By stj
Re: Component ID and Replacement

good, another fix complete. :)
Forum: Equipment Usage, Soldering, Techniques, and Reviews 09-08-2019, 08:17 AM
Replies: 196
Views: 6,755
Posted By stj
Re: Soldering station thoughts and guidelines

most ali sellers offer shipping options.
avoid u.s. gangsters(couriors) like UPS or TNT or FEDEX like the plague.
those fucking gangsters hold your item till you pay them import tax and handling...
Forum: General Electronics Technical Discussion 09-08-2019, 05:10 AM
Replies: 9
Views: 142
Posted By stj
Re: One 120V grid tie inverter on 240V split phase system?

well your power meter wont be happy!!!
Forum: General Electronics Technical Discussion 09-08-2019, 05:09 AM
Replies: 5
Views: 73
Posted By stj
Forum: General Electronics Technical Discussion 09-08-2019, 05:07 AM
Replies: 13
Views: 182
Posted By stj
Re: Is there anyone that is very familiar with VFD Drive

if you have a digital scope, you could get some inductive probes and record it over usb/ethernet with LXI software.
Showing results 1 to 25 of 500

 
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