Recent Posts

1

Repair / Re: Rigol DP712 Output Shorted; Fuse? / I Screwed Up

« Last post by zanfar on Today at 09:07:16 pm »

I believe it is an On-Semi MBR10100G Schottky Diode.

https://www.onsemi.com/download/data-sheet/pdf/mbr1080-d.pdf

2

Test Equipment / Re: frequency displayed in Hz

« Last post by Pin240 on Today at 09:06:33 pm »

It's my own fault. I read the documentation. Several times everything went well.

His experiments killed the apparatus.

Maybe you wanted to mean YOUR experiments and lack of reading killed the apparatus?

platform-tools gives an error message

ERASE PARTITIONS...
Erasing 'boot'                                     FAILED (remote: 'invalid NAND device')
fastboot: error: Command failed

Failed to erase the memory!

3

Beginners / Re: Bulk input caps and impedance

« Last post by Zero999 on Today at 09:04:52 pm »

Most components can handle power spikes without a problem.

A MOSFET and zener diode can be used to make a crude current limiter.

4

Projects, Designs, and Technical Stuff / Re: digital RGB LED question

« Last post by glenenglish on Today at 09:04:32 pm »

I didnt delete anything.
The fundamental freq at 800kHz was a problem . Yu cant meet CISR25 with a transmitter running inside the AM broadcast band
never mind the harmonics.
The problem for the devices was the lack of harmonics (IE being not square waves, IE without necessary fast risetimes to ensure the transition between 0 and 1 is fast enough to avoid the chip toggling states internally as it passes through the threshold band.),

5

Test Equipment / Re: Siglent SDS3000X HD and upgraded SDS1000X HD

« Last post by Martin72 on Today at 09:04:02 pm »

It would be great if performa01 would contribute to the manuals.
The documentation is something that, in my opinion, is not yet running smoothly at Siglent.
Be it that the manuals are not updated after various feature upgrades.
Or that certain special functions are not sufficiently explained.
If there are application notes for this, it would be nice if there was at least a reference to this.

6

Test Equipment / Re: frequency displayed in Hz

« Last post by DavidAlfa on Today at 09:03:07 pm »

His experiments killed the apparatus.

Maybe you wanted to mean YOUR experiments killed the apparatus?

Who has a backup using dsoflash For DSO 2C10?

Because this question demonstrates absolute lack of reading and reckless behavior, there's a HUGE FAQ explanign virtually everything.

»  What not to do  «
»  Screwing up your system because you thought you were smarter than anyone, so no reading of any kind was needed.
»  Coming here to blame us for your fuck-up because of the above.

7

Projects, Designs, and Technical Stuff / Re: PC74hct4046ap Replacement

« Last post by dj_holmes on Today at 09:01:12 pm »

I hate maths 

8

Projects, Designs, and Technical Stuff / Re: digital RGB LED question

« Last post by tooki on Today at 09:00:30 pm »

Right, that’s how I understood it.

So why would your triangle waves be worse for EMI than the clean square waves described in the now-deleted post you replied to?

9

Repair / Re: Rigol DP712 Output Shorted; Fuse? / I Screwed Up

« Last post by Harry_22 on Today at 09:00:11 pm »

please specify the name of this part

10

Other Equipment & Products / Re: Filter advice please on home made fume extractor

« Last post by tooki on Today at 08:57:19 pm »

Is he using any HEPA filtration at all? Didn't see it.
I would be tempted to use an off the shelf hepa filter and not some sheet because they are pleated which will increase the surface area. But if you have a really large surface you can drape it across maybe it would be fine.

I second this suggestion: you want a commercial pleated filter with a quite dense, deep pleating. Rosin clogs up filters (and can be sticky, trapping other dust), so a flat filter would probably clog very quickly. Look for “deep pleat HEPA filters”.