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Search: Posts Made By: Curious.George
Forum: General Computer & Tech Discussion Today, 12:12 AM
Replies: 1
Views: 26
Posted By Curious.George
WD drive "colors"

I typically have "black" WD drives, here. A couple of purple -- but special purposed. I've had bad luck with Green so avoid them.

But, recently offered a box of Blues. As I understand it, these...
Forum: Troubleshooting Game Consoles & Other Weird Devices Yesterday, 05:58 PM
Replies: 34
Views: 783
Posted By Curious.George
Re: Something is short on my van, but what?

You can codify EXACTLY the operating and charging conditions (current, voltage, temperature, time) FOR A PARTICULAR BATTERY (chemistry as well as manufacturer/model) and get a reasonably good idea of...
Forum: Troubleshooting Game Consoles & Other Weird Devices Yesterday, 11:03 AM
Replies: 34
Views: 783
Posted By Curious.George
Re: Something is short on my van, but what?

Wow, your ignorance is really showing. Have you ever sat in a meeting with "Marketing" and "Manufacturing" trying to decide which features -- and at which costs -- to include in a product offering? ...
Forum: Troubleshooting Game Consoles & Other Weird Devices Yesterday, 07:48 AM
Replies: 34
Views: 783
Posted By Curious.George
Re: Something is short on my van, but what?

Yup. Especially important to make sure electrolyte level is "up" to keep the plates COMPLETELY covered.

I used to get 6-8 years out of a (good) battery living in colder climates. So, when I'd...
Forum: Troubleshooting Game Consoles & Other Weird Devices Yesterday, 07:38 AM
Replies: 34
Views: 783
Posted By Curious.George
Re: Something is short on my van, but what?

It increases cost. You do realize the difference in wire lengths required to get a battery into the "trunk"/boot vs. keeping it under the hood, a couple of wire-feet from the starter AND alternator?...
Forum: Troubleshooting Game Consoles & Other Weird Devices Yesterday, 04:39 AM
Replies: 34
Views: 783
Posted By Curious.George
Re: Something is short on my van, but what?

Acid corrodes. The more aggressive the acid, the more aggressive the corrosion.

Batteries are chemistry, not "electronics". So, considerably more sensitive to their operating conditions (you...
Forum: Troubleshooting Game Consoles & Other Weird Devices Yesterday, 04:26 AM
Replies: 34
Views: 783
Posted By Curious.George
Re: Something is short on my van, but what?

How big are the engines? How many CCA required? Note that a van's engine is, already, ALMOST *in* the passenger compartment.

Moving the battery means lengthening the wire to the biggest load in...
Forum: Troubleshooting Game Consoles & Other Weird Devices 09-18-2020, 10:44 PM
Replies: 34
Views: 783
Posted By Curious.George
Re: Something is short on my van, but what?

Yes. Lowering the concentration increases battery life -- at the expense of capacity.

The old-fashioned "emergency lights" (with the big, transparent, lead acid batteries) were used like this.
...
Forum: Troubleshooting Game Consoles & Other Weird Devices 09-18-2020, 07:27 AM
Replies: 34
Views: 783
Posted By Curious.George
Re: Something is short on my van, but what?

Here (AZ, USA) the heat EATS batteries. After about *3* years, encountering ANY starting problems means: "replace battery". Suppliers don't even bother to TEST the battery as they know this to be...
Forum: Troubleshooting Game Consoles & Other Weird Devices 09-17-2020, 11:00 PM
Replies: 25
Views: 353
Posted By Curious.George
Re: What's inside! .. ?: Razor E300 Scooter

Put a cinder block on the scooter; step onto the block.
Forum: Troubleshooting Game Consoles & Other Weird Devices 09-17-2020, 05:05 PM
Replies: 34
Views: 783
Posted By Curious.George
Re: Something is short on my van, but what?

It's not an LED (unless there have been significant changes to VRLA technology that have eluded me!).

Rather, it's a hygrometer. It is providing a visual indication of the specific gravity in ONE...
Forum: Troubleshooting Game Consoles & Other Weird Devices 09-16-2020, 04:39 PM
Replies: 25
Views: 353
Posted By Curious.George
Re: What's inside! .. ?: Razor E300 Scooter

There is a crude (full/low) battery gauge on the throttle. Though I can't recall the trip point for "low" (if it winks while trying to get moving, it would suggest the batter is drooping...
Forum: Troubleshooting Game Consoles & Other Weird Devices 09-15-2020, 06:18 AM
Replies: 25
Views: 353
Posted By Curious.George
Re: What's inside! .. ?: Razor E300 Scooter

A would-be thief who THINKS would realize that having the scooter WITHOUT THE CHARGER makes the theft meaningless; the only value would be if a NONTHINKING "customer" could be found to take it off...
Forum: Troubleshooting Game Consoles & Other Weird Devices 09-15-2020, 01:15 AM
Replies: 25
Views: 353
Posted By Curious.George
Re: What's inside! .. ?: Razor E300 Scooter

Speed control is only obvious for "lightweight" riders. Motor torque drops with speed so heavier riders effectively only have one choice: full throttle (cuz the motor is undersized).

I've...
Forum: Troubleshooting Game Consoles & Other Weird Devices 09-14-2020, 08:54 PM
Replies: 25
Views: 353
Posted By Curious.George
Re: What's inside! .. ?: Razor E300 Scooter

It's a PWM controller. The throttle controls speed by altering the duty cycle. As the MOSFETs are eitehr full on or full off, the amount of power dissipated there is "manageable".



60AHr *...
Forum: Troubleshooting Game Consoles & Other Weird Devices 09-13-2020, 06:35 AM
Replies: 34
Views: 783
Posted By Curious.George
Re: Something is short on my van, but what?

It's possible that you have a short (to chassis) upstream from the fuse block.

BUT... in the event that the fault lies DOWNstream from the fuse block, it (the fuseblock) gives you an easy way to...
Forum: Troubleshooting & Designing Networks 09-12-2020, 02:01 AM
Replies: 1
Views: 806
Posted By Curious.George
Re: Synology DS412+ no signs of life

Now you'll have to trace foils to see how far into the circuit your deliberate over-voltage has damaged things.
Forum: General Electronics Technical Discussion 09-11-2020, 07:39 PM
Replies: 21
Views: 276
Posted By Curious.George
Re: Remote pump control ideas.

Ethernet is a particular hardware communication scheme.

*An* "Internet" is an interconnected group (typically of) computers.

THE Internet is the global network of interconnected computers.
...
Forum: General Electronics Technical Discussion 09-09-2020, 04:40 PM
Replies: 29
Views: 350
Posted By Curious.George
Re: Current flowing through transistor even when base is shunted to ground.

The V-I characteristics of the base-emitter junction are those of a diode. I.e., at low voltages (very close to 0), there is no current flowing. Once you get to about 0.6-0.7 volts, current flows. ...
Forum: General Electronics Technical Discussion 09-09-2020, 04:12 PM
Replies: 13
Views: 352
Posted By Curious.George
Re: help with home a/c and circuit breaker

You may find that you actually have TWO 20A circuits -- if it's a duplex breaker. It's not uncommon to run a 3-wire "240V" feed around a small apartment and wire half of the loads to "one leg" with...
Forum: General Electronics Technical Discussion 09-09-2020, 02:01 PM
Replies: 29
Views: 350
Posted By Curious.George
Re: Current flowing through transistor even when base is shunted to ground.

It's not important if you are SATURATING the transistor -- i.e., using it as an ON/OFF switch.

If you fail to deliver enough base current, then the collector current will be reduced. This can...
Forum: General Computer & Tech Discussion 09-08-2020, 04:32 PM
Replies: 4,665
Views: 723,006
Posted By Curious.George
Re: best cheap/free scores 1.1

If you want to convince yourself that the "photo files" have been recovered, you DON'T need to call all your buddies over (including the customer who just walked in the shop -- me!) to giggle and...
Forum: General Electronics Technical Discussion 09-08-2020, 04:25 PM
Replies: 29
Views: 350
Posted By Curious.George
Re: Current flowing through transistor even when base is shunted to ground.

That would just serve to limit the current through the BE junction. Presumably, the output impedance of the MCU is high enough that the "resistor" is actually part of the MCU.

(The OP would note...
Forum: General Electronics Technical Discussion 09-05-2020, 08:21 PM
Replies: 13
Views: 352
Posted By Curious.George
Re: help with home a/c and circuit breaker

Most breakers are relatively easy to replace. The first hurdle is almost always FINDING a replacement as panels are often older than "spares supplies"!

Usually, the hot ends of the breaker will...
Forum: General Computer & Tech Discussion 09-05-2020, 01:42 AM
Replies: 8
Views: 281
Posted By Curious.George
Re: Backup advice needed

That assumes you have a spare drive and system (along with the backup/restore software) available "offsite", as well.

It's much easier to use a more ubiquitous medium (disk) and a *portable* file...
Showing results 1 to 25 of 500

 
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