Author Topic: EEVblog #1148 - Mailbag  (Read 2310 times)

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Offline EEVblog

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EEVblog #1148 - Mailbag
« on: November 20, 2018, 07:32:12 am »


SPOILERS:
Awesome recreations of the Byte front covers: https://bytecovers.com/
Expanded scale 5V voltmeter
Russian multimeter and calculator
Casio Data-Cal 50 calculator
Nintendo 64 N64RGB upgrade board
Delay line
Battery in-product current measurement

« Last Edit: November 20, 2018, 10:54:58 am by EEVblog »
 
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Online maginnovision

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Re: EEVblog #1147 - Mailbag
« Reply #1 on: November 20, 2018, 07:56:35 am »
1148?
 

Offline Brumby

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Re: EEVblog #1148 - Mailbag
« Reply #2 on: November 20, 2018, 11:05:31 am »
There are some things have have an elegant simplicity about them....

« Last Edit: November 20, 2018, 11:07:06 am by Brumby »
 
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Offline Neilm

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Re: EEVblog #1148 - Mailbag
« Reply #3 on: November 20, 2018, 07:45:11 pm »
That delay line looked as if it was  specified in Semens. (pet peeve excercised)
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Offline johnlsenchak

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Re: EEVblog #1148 - Mailbag
« Reply #4 on: November 20, 2018, 07:49:36 pm »

Analog  delay  lines  can also be found  in  CRT  color  televisions for timing  with the  Chroma.


Sorry, I   don't  care  for that bench  setup .  it just dosn't  look  right to me. Other's here  may disagree  with me on this one.  8)
« Last Edit: November 20, 2018, 07:51:31 pm by johnlsenchak »
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Offline hli

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Re: EEVblog #1148 - Mailbag
« Reply #5 on: November 20, 2018, 08:27:04 pm »
The mystery board from China is a "RGB Video DAC for Nintendo 64". The ID on the board (N64RGB12) gave it away: http://etim.net.au/n64rgb/
 

Offline 5n44p

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Re: EEVblog #1148 - Mailbag
« Reply #6 on: November 20, 2018, 11:18:32 pm »
Where can we get the AA current measurement board?
 

Offline Brumby

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Re: EEVblog #1148 - Mailbag
« Reply #7 on: November 21, 2018, 03:21:21 am »
Do what I did ... use a piece of double sided PCB.  Thinner is easier to use, but 1.6mm can work.
 

Offline HKJ

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Re: EEVblog #1148 - Mailbag
« Reply #8 on: November 21, 2018, 03:49:19 am »
In AA chargers even 0.8mm is often too thick. A very thin solution is to use a piece of Kapton tape with copper tape on both sides, it is possible to solder wires to this.
 
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Online GeorgeOfTheJungle

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Re: EEVblog #1148 - Mailbag
« Reply #9 on: November 21, 2018, 08:52:49 pm »
From that Byte magazine. Look at the über cool Compucolor 8 tracks cartridge "floppy tape memory", it's got 1 MB!. The Compucolors' screens/graphics were simply gorgeous. Sadly, four or five years later, they were out of bussiness. The TRS-80 is nowhere to be seen, because it didn't exist yet. The Commodore PET 2001 came the next month.
« Last Edit: November 21, 2018, 10:49:17 pm by GeorgeOfTheJungle »
 #include <unistd.h>
 int main (void) { while (1) fork(); }
 

Online GeorgeOfTheJungle

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Re: EEVblog #1148 - Mailbag
« Reply #10 on: November 21, 2018, 08:57:12 pm »
More:
 #include <unistd.h>
 int main (void) { while (1) fork(); }
 

Online GeorgeOfTheJungle

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Re: EEVblog #1148 - Mailbag
« Reply #11 on: November 21, 2018, 08:58:19 pm »
The Apple II was new then. Note $600 16k RAM. Apple's been expensive since day one. There's another ad later of 16k RAM for $485, but that's with decoding/glue circuitry and mounted in an S100 expansion board, it's $115 less than Apple's bare chips.
« Last Edit: November 21, 2018, 09:18:52 pm by GeorgeOfTheJungle »
 #include <unistd.h>
 int main (void) { while (1) fork(); }
 

Online GeorgeOfTheJungle

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Re: EEVblog #1148 - Mailbag
« Reply #12 on: November 21, 2018, 09:02:34 pm »
And the Verbatim 5.25 inch mini floppies are in the What's New section :-) Next to the hp9831A, for $7200, ouch!

« Last Edit: November 21, 2018, 09:31:49 pm by GeorgeOfTheJungle »
 #include <unistd.h>
 int main (void) { while (1) fork(); }
 

Online GeorgeOfTheJungle

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Re: EEVblog #1148 - Mailbag
« Reply #13 on: November 21, 2018, 09:09:41 pm »
Mass memory of the time, the bubble memory never really came to be.
« Last Edit: November 21, 2018, 09:20:28 pm by GeorgeOfTheJungle »
 #include <unistd.h>
 int main (void) { while (1) fork(); }
 

Online GeorgeOfTheJungle

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Re: EEVblog #1148 - Mailbag
« Reply #14 on: November 21, 2018, 09:17:08 pm »
More storage
 #include <unistd.h>
 int main (void) { while (1) fork(); }
 

Online GeorgeOfTheJungle

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Re: EEVblog #1148 - Mailbag
« Reply #15 on: November 21, 2018, 09:17:52 pm »
More...
 #include <unistd.h>
 int main (void) { while (1) fork(); }
 

Online GeorgeOfTheJungle

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Re: EEVblog #1148 - Mailbag
« Reply #16 on: November 21, 2018, 09:25:10 pm »
A National Semiconductor RPN calculator !

 #include <unistd.h>
 int main (void) { while (1) fork(); }
 

Online GeorgeOfTheJungle

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Re: EEVblog #1148 - Mailbag
« Reply #17 on: November 21, 2018, 09:25:46 pm »
QRCode, 70's style:
 #include <unistd.h>
 int main (void) { while (1) fork(); }
 

Online GeorgeOfTheJungle

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Re: EEVblog #1148 - Mailbag
« Reply #18 on: November 21, 2018, 11:00:51 pm »
This is a "personal computer" printer that you could buy then :-)
 #include <unistd.h>
 int main (void) { while (1) fork(); }
 

Offline nemail2

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Re: EEVblog #1148 - Mailbag
« Reply #19 on: November 22, 2018, 06:19:55 am »
I'm wondering whether Dave would bother to do a (2 minute?) teardown of my self-made lab psu if I send it to him (which has been inspired by his until now released µSupply schematics) or whether he'd just be disgusted by "yet another self-made lab PSU" and just won't stop ranting about it :-D
 

Offline NivagSwerdna

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Re: EEVblog #1148 - Mailbag
« Reply #20 on: November 22, 2018, 06:22:17 pm »
 

Offline errsu

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Re: EEVblog #1148 - Mailbag
« Reply #21 on: November 22, 2018, 11:19:56 pm »
@11:50, that's the list of warranty repair shops of the thing in the USSR. With city, address and phone number. Back in the days you didn't even think about sending it somewhere with the mail or such. :-) You get an idea how large the USSR was. 
 


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