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1
Thanks for clairifying that for me Bugi ,
I was coming to the realisation the buck stopped with me ,and either way Im stuck with the charge . :horse: ;
I was expecting  for Feeltech to cover any costs associated ,which I think is only fair really ,looks unlikely at this stage though.
Maybe the next package Fed-ex delivers I can produce the invoice and pay them on the spot in cash. :D

2
EEVblog Specific / Re: eevBLAB #53 - Beware of Trademark Scams
« Last post by EEVblog on Today at 12:15:09 am »
The one I'm seeing most of right now is companies making genuine-looking 'invoices' for domain name registration, which are actually just disguised offers for search engine optimisation.

I used to get those a few years back, but haven't had one for a long time now.
3
If you are OK working with static-sensitive devices, you may try to assemble my phono stage. It is also FET only, passive EQ circuit  ;) . To my ear it is better than the Pacific and you can get the FETs from a reputable source, like Mouser or Digikey. You can replace M4 with a 10 Ohm resistor for simplicity.

Cheers

Alex
4
Yep it is a current shunt. The whole idea behind it is that the battery ground and the supplied circuit ground will remain separate.

Measuring the charging current with a low-side resistor is therefore easy and practical (you just measure its voltage referenced to ground).
5
The 87V is ideal for the regular poky proddy work. It's very quick and though there aren't many features, those features work well.
6
AFAIR, PCLKT* inputs are "true" clock inputs and PCLKC* are "complementary". Not 100% that it matters when dealing with single-ended clocks, but I would connect your 40 MHz oscillator's output (which I assume is single-ended) to a PCLKT* input instead of PCLKC0_1. This is what I've always done with single-ended clocks on those FPGAs. You may check in the datasheet if it really matters or not.
7
Circuit Studio / Re: How's CS progressing? Is it no longer "beta"?
« Last post by trevwhite on Today at 12:10:16 am »
My experience is the same as others. It does the job but has its qwerks. For the money I am happy with the product itself.

My one gripe is that support is a layer removed from Altium. I believe Farnell are supposed to support the product but if you have any difficult questions that require a response from the actual company, they pretty much are not interested. They do not reply to emails regarding CS issues. It leaves a slighlty bad taste in the mouth and is the reason I have stuck with V1.4 instead of paying the yearly figure to upgrade.
The software does work and import of step files for library parts is a great feature. I just wish they woul emply someone to handle customer support.

Trev


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Test Equipment / Re: Test Equipment Anonymous (TEA) group therapy thread
« Last post by bd139 on Today at 12:08:09 am »
I'm going to review it next to the BM867s and the U1241C so will see who gets beaten. It's going to be a tough match :)

Bored so browsing aliexpress. These look like a cheap bit of time nuttery fun .... https://www.aliexpress.com/item/Constant-temperature-crystal-OCXO-ENE3311B-ENE3311A-10MHZ-5V-square-wave/32829489181.html
9
Buy/Sell/Wanted / Re: Wanted budget power supply
« Last post by coromonadalix on Today at 12:07:30 am »
Well  if you do build, repairs things  etc ...  the current limiter is an obligation to have ...

It depends of the psu you find,  some of them as i said can be safely hacked of can be made variable ...

The Ebay links i gave you are enough for a start ...


Here's an link to an variable current and voltage DIY psu

http://electronics-diy.com/30v-10a-variable-bench-power-supply.php


You have an thread here : https://www.eevblog.com/forum/projects/lm723-and-variable-current-control-technique/

The circuit 3 design is very good, and doesn't cost a fortune in parts, but you have to get an ammeter with an shunt in it ??? around 0.47 - 0.5 ohms i think, to be in the 3 amp current range,   (for the current limit, pins 2 and 3 of the lm723)
10

Hameg 8122 Universal Counter - teardown, repair and test
Kaizer Power Electronics
Published on Sep 24, 2018
The Hameg 8122 is a programable universal counter / timer that has 3 inputs. Channel A and B from DC-150 MHz at 300 Vp-p and channel C from DC-1.6 GHz at 5 Vp-p.

I accidentally broke a knob off the instrument when moving and while I wanted to repair it, I might as well give a teardown of the unit. Finding a replacement part was not easy, but a cheap alternative solution was found.
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