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Search: Posts Made By: Curious.George
Forum: General Computer & Tech Discussion Yesterday, 03:10 PM
Replies: 4,065
Views: 639,142
Posted By Curious.George
Re: best cheap/free scores 1.1

I suspect different folks have different rationales for such "beliefs".

It's not fun getting old(er). Nothing you've experienced prior prepares you for it! (D'uh!) Everything is a new...
Forum: General Computer & Tech Discussion Yesterday, 02:55 PM
Replies: 22
Views: 582
Posted By Curious.George
Re: How ca I use an SPDT 5V relay to reverse NC switch in 3.5mm jack?

Yes, and we love WHINY *ssholes who just repeat stupid questions without rational basis ignoring WORKABLE solutions that have already been posted.

[whiny comments about his dysfunctional school...
Forum: General Electronics Technical Discussion Yesterday, 01:13 PM
Replies: 5
Views: 88
Posted By Curious.George
Re: Substituting PNP with NPN (schematics provided)

Is there a reason you're not just "outsourcing" the design, manufacture and UL certification of the power supply to someone who makes 12V 2A wall warts?

(There's a reason SO MANY devices are sold...
Forum: General Computer & Tech Discussion Yesterday, 01:08 PM
Replies: 22
Views: 582
Posted By Curious.George
Re: How ca I use an SPDT 5V relay to reverse NC switch in 3.5mm jack?

If it "for sure works", then there's no need to answer the question posed, right?

(Or, do you have some nonstandard way of defining "works" that includes "not working"?)
Forum: General Computer & Tech Discussion Yesterday, 01:06 PM
Replies: 22
Views: 582
Posted By Curious.George
Re: How ca I use an SPDT 5V relay to reverse NC switch in 3.5mm jack?

A student that apparently doesn't want to LEARN... :facepalm:



You only have access to THREE signals in any cable that mates with said jack: left, right and return. How are you going to...
Forum: General Computer & Tech Discussion 11-13-2019, 10:27 AM
Replies: 22
Views: 582
Posted By Curious.George
Re: How ca I use an SPDT 5V relay to reverse NC switch in 3.5mm jack?

You've still not indicated what SIGNALS are connected to those pins.

Quoting YOUR reference:



Note that this suggests more than 4 connections to each jack as the switch can not share any of...
Forum: General Computer & Tech Discussion 11-13-2019, 01:27 AM
Replies: 4,065
Views: 639,142
Posted By Curious.George
Re: best cheap/free scores 1.1

It's amusing (demoralizing!) how your attitudes towards age change, as you get older! License plate frame I saw today: "Old age is 15 years older than I am!"

You also begin to more fully...
Forum: General Computer & Tech Discussion 11-12-2019, 11:44 AM
Replies: 4,065
Views: 639,142
Posted By Curious.George
Re: best cheap/free scores 1.1

Six more 2.5" 500G SAS drives -- but they're just 7K2's.

And, a pair of 2T purples that I can move into the DVRs.
Forum: General Computer & Tech Discussion 11-12-2019, 11:41 AM
Replies: 22
Views: 582
Posted By Curious.George
Re: How ca I use an SPDT 5V relay to reverse NC switch in 3.5mm jack?

The motherboard ALSO "makes circuit with the soundcard"; you haven't provided any information of value.

"Help! There's no sound coming from the radio in my car..."
Forum: General Computer & Tech Discussion 11-12-2019, 01:49 AM
Replies: 22
Views: 582
Posted By Curious.George
Re: How ca I use an SPDT 5V relay to reverse NC switch in 3.5mm jack?

How many connections to each jack? If there aren't at least 4 (for a stereo connector) -- and if all of them aren't actually connected to signals, then there isn't a "mechanical switch" incorporated...
Forum: General Computer & Tech Discussion 11-11-2019, 06:53 PM
Replies: 22
Views: 582
Posted By Curious.George
Re: How ca I use an SPDT 5V relay to reverse NC switch in 3.5mm jack?

I don't understand. Some jacks have mechanical switches usually to open the "default" circuit connection when an inserted plug is physically detected. E.g., the "audio output" often is routed...
Forum: General Computer & Tech Discussion 11-10-2019, 02:27 PM
Replies: 4,065
Views: 639,142
Posted By Curious.George
Re: best cheap/free scores 1.1

Wait until you start finding folks YOUNGER that you passing away! I've had a few friends die in their 50's from heart attacks. We've had three neighbors pass away in the past few months...
...
Forum: General Electronics Technical Discussion 11-10-2019, 02:18 PM
Replies: 19
Views: 450
Posted By Curious.George
Re: Connecting Neutral/Earth together

You might want to rethink that; what do you do when your VoIP service (or ISP) goes down? Having a fallback PSTN connection -- AND A CONVENIENT WAY TO ACCESS IT -- can be a cheap bit of insurance.
...
Forum: General Computer & Tech Discussion 11-08-2019, 07:16 AM
Replies: 10
Views: 195
Posted By Curious.George
Re: What TRULY Renders an Operating System Obsolete?

No, the function of an OS is to provide services to applications.

Note that some OSs aren't used with "human" users.

And, most provide only partial isolation of hardware from application (e.g.,...
Forum: General Computer & Tech Discussion 11-08-2019, 06:49 AM
Replies: 10
Views: 195
Posted By Curious.George
Re: What TRULY Renders an Operating System Obsolete?

Android is a bigger f*ckup than Windows! Jeez, you've got a change to "start over" and you make many of the same screwups??

Why is there a single, unified "asset space" instead of one that is...
Forum: General Computer & Tech Discussion 11-08-2019, 06:25 AM
Replies: 10
Views: 195
Posted By Curious.George
Re: What TRULY Renders an Operating System Obsolete?

But, those are only important if the machine operates in an environment where it can be exposed to threats. Remove that exposure and the need for "security updates" goes away -- the emphasis then is...
Forum: General Computer & Tech Discussion 11-07-2019, 11:06 PM
Replies: 10
Views: 195
Posted By Curious.George
Re: What TRULY Renders an Operating System Obsolete?

I think that depends on what your plan/need of using the OS.

I rarely use a Web browser on any of my "non routed" (i.e., airgapped) machines -- despite the fact that many of the appliances that...
Forum: General Electronics Technical Discussion 11-06-2019, 11:48 PM
Replies: 17
Views: 202
Posted By Curious.George
Re: High resistance measurement

Did I say it was "new to you"? :>

As to the OPs motivation... <shrug> Maybe he's limited to the tools he has available?

These are the sorts of questions I use to quiz job applicants (techs...
Forum: General Electronics Technical Discussion 11-06-2019, 10:18 PM
Replies: 17
Views: 202
Posted By Curious.George
Re: High resistance measurement

The meter is part of the circuit and has an effect on the measurement.
The characteristics of the meter are (typically) only NOMINALLY known (what's its tolerance? does it vary with temperature? ...
Forum: General Electronics Technical Discussion 11-06-2019, 07:43 PM
Replies: 17
Views: 202
Posted By Curious.George
Re: High resistance measurement

Exactly. But, if you know (for sure) one of the resistor values, you can make OTHER measurements to determine the effect of the meter on the circuit. I.e., get a set of linear equations that you...
Forum: General Electronics Technical Discussion 11-06-2019, 04:07 PM
Replies: 17
Views: 202
Posted By Curious.George
Re: High resistance measurement

When you're dealing with impedances this high, the "instrument" becomes part of the measurement -- it can no longer be considered as an approximation of an ideal meter (infinite input impedance). ...
Forum: General Electronics Technical Discussion 11-03-2019, 05:03 AM
Replies: 2
Views: 59
Posted By Curious.George
Re: How to use a SCS not a SCR

An SCS is (effectively) just an SCR with all four layers bonded out -- instead of just the three for an SCR.

[You can also use a GTO or sensitive gate SCR -- though with considerably more hassle]...
Forum: General Computer & Tech Discussion 11-01-2019, 05:59 AM
Replies: 3
Views: 93
Posted By Curious.George
Re: 2-dimensional barcodes

[stuff elided]



Assume you can create a grid "template" that just needs "squares" that are white or black (that may not be possible, depending on the code you are using), you could create a...
Forum: General Computer & Tech Discussion 11-01-2019, 02:15 AM
Replies: 4,065
Views: 639,142
Posted By Curious.George
Re: best cheap/free scores 1.1

Three 2408's (with the usual problems).

Plus three CNAs! Cool!
Forum: General Computer & Tech Discussion 11-01-2019, 02:13 AM
Replies: 4,065
Views: 639,142
Posted By Curious.George
Re: best cheap/free scores 1.1

Actually, if you haven't totally abused your body and start treating it a bit better/safer, it's not too bad. You just have to change your expectations, a bit (e.g., the all-nighters are fewer and...
Showing results 1 to 25 of 500

 
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