Understanding Triglycerides

Posted in Biology, Reflection | Leave a comment

Choosing Power Supply Adapter

To clear the confusion of what Amperage adapter to use, this is a good source to read:

Voltage Rating

If a device says it needs a particular voltage, then you have to assume it needs that voltage. Both lower and higher could be bad.

At best, with lower voltage the device will not operate correctly in a obvious way. However, some devices might appear to operate correctly, then fail in unexpected ways under just the right circumstances. When you violate required specs, you don't know what might happen. Some devices can even be damaged by too low a voltage for extended periods of time. If the device has a motor, for example, then the motor might not be able to develop enough torque to turn, so it just sits there getting hot. Some devices might draw more current to compensate for the lower voltage, but the higher than intended current can damage something. Most of the time, lower voltage will just make a device not work, but damage can't be ruled out unless you know something about the device.

Higher than specified voltage is definitely bad. Electrical components all have voltages above which they fail. Components rated for higher voltage generally cost more or have less desirable characteristics, so picking the right voltage tolerance for the components in the device probably got significant design attention. Applying too much voltage violates the design assumptions. Some level of too much voltage will damage something, but you don't know where that level is. Take what a device says on its nameplate seriously and don't give it more voltage than that.

Current Rating

Current is a bit different. A constant-voltage supply doesn't determine the current: the load, which in this case is the device, does. If Johnny wants to eat two apples, he's only going to eat two whether you put 2, 3, 5, or 20 apples on the table. A device that wants 2 A of current works the same way. It will draw 2 A whether the power supply can only provide the 2 A, or whether it could have supplied 3, 5, or 20 A. The current rating of a supply is what it can deliver, not what it will always force thru the load somehow. In that sense, unlike with voltage, the current rating of a power supply must be at least what the device wants but there is no harm in it being higher. A 9 volt 5 amp supply is a superset of a 9 volt 2 amp supply, for example.

Replacing Existing Supply

If you are replacing a previous power supply and don't know the device's requirements, then consider that power supply's rating to be the device's requirements. For example, if a unlabeled device was powered from a 9 V and 1 A supply, you can replace it with a 9 V and 1 or more amp supply.

Advanced Concepts

The above gives the basics of how to pick a power supply for some device. In most cases that is all you need to know to go to a store or on line and buy a power supply. If you're still a bit hazy on what exactly voltage and current are, it's probably better to quit now. This section goes into more power supply details that generally don't matter at the consumer level, and it assumes some basic understanding of electronics.

  • Regulated versus UnregulatedUnregulatedVery basic DC power supplies, called unregulated, just step down the input AC (generally the DC you want is at a much lower voltage than the wall power you plug the supply into), rectify it to produce DC, add a output cap to reduce ripple, and call it a day. Years ago, many power supplies were like that. They were little more than a transformer, four diodes making a full wave bridge (takes the absolute value of voltage electronically), and the filter cap. In these kinds of supplies, the output voltage is dictated by the turns ratio of the transformer. This is fixed, so instead of making a fixed output voltage their output is mostly proportional to the input AC voltage. For example, such a "12 V" DC supply might make 12 V at 110 VAC in, but then would make over 13 V at 120 VAC in.Another issue with unregulated supplies is that the output voltage not only is a function of the input voltage, but will also fluctuate with how much current is being drawn from the supply. A unregulated "12 volt 1 amp" supply is probably designed to provide the rated 12 V at full output current and the lowest valid AC input voltage, like 110 V. It could be over 13 V at 110 V in at no load (0 amps out) alone, and then higher yet at higher input voltage. Such a supply could easily put out 15 V, for example, under some conditions. Devices that needed the "12 V" were designed to handle that, so that was fine.RegulatedModern power supplies don't work that way anymore. Pretty much anything you can buy as consumer electronics will be a regulated power supply. You can still get unregulated supplies from more specialized electronics suppliers aimed at manufacturers, professionals, or at least hobbyists that should know the difference. For example, Jameco has wide selection of power supplies. Their wall warts are specifically divided into regulated and unregulated types. However, unless you go poking around where the average consumer shouldn't be, you won't likely run into unregulated supplies. Try asking for a unregulated wall wart at a consumer store that sells other stuff too, and they probably won't even know what you're talking about.A regulated supply actively controls its output voltage. These contain additional circuitry that can tweak the output voltage up and down. This is done continuously to compensate for input voltage variations and variations in the current the load is drawing. A regulated 1 amp 12 volt power supply, for example, is going to put out pretty close to 12 V over its full AC input voltage range and as long as you don't draw more than 1 A from it.Universal inputSince there is circuitry in the supply to tolerate some input voltage fluctuations, it's not much harder to make the valid input voltage range wider and cover any valid wall power found anywhere in the world. More and more supplies are being made like that, and are called universal input. This generally means they can run from 90-240 V AC, and that can be 50 or 60 Hz.
  • Minimum LoadSome power supplies, generally older switchers, have a minimum load requirement. This is usually 10% of full rated output current. For example, a 12 volt 2 amp supply with a minimum load requirement of 10% isn't guaranteed to work right unless you load it with at least 200 mA. This restriction is something you're only going to find in OEM models, meaning the supply is designed and sold to be embedded into someone else's equipment where the right kind of engineer will consider this issue carefully. I won't go into this more since this isn't going to come up on a consumer power supply.
  • Current LimitAll supplies have some maximum current they can provide and still stick to the remaining specs. For a "12 volt 1 amp" supply, that means all is fine as long as you don't try to draw more than the rated 1 A.There are various things a supply can do if you try to exceed the 1 A rating. It could simply blow a fuse. Specialty OEM supplies that are stripped down for cost could catch fire or vanish into a greasy cloud of black smoke. However, nowadays, the most likely response is that the supply will drop its output voltage to whatever is necessary to not exceed the output current. This is called current limiting. Often the current limit is set a little higher than the rating to provide some margin. The "12 V 1 A" supply might limit the current to 1.1 A, for example.A device that is trying to draw the excessive current probably won't function correctly, but everything should stay safe, not catch fire, and recover nicely once the excessive load is removed.
  • RippleNo supply, even a regulated one, can keep its output voltage exactly at the rating. Usually due to the way the supply works, there will be some frequency at which the output oscillates a little, or ripples. With unregulated supplies, the ripple is a direct function of the input AC. Basic transformer unregulated supplies fed from 60 Hz AC will generally ripple at 120 Hz, for example. The ripple of unregulated supplies can be fairly large. To abuse the 12 volt 1 amp example again, the ripple could easily be a volt or two at full load (1 A output current). Regulated supplies are usually switchers and therefore ripple at the switching frequency. A regulated 12 V 1 A switcher might ripple ±50 mV at 250 kHz, for example. The maximum ripple might not be at maximum output current.
Posted in Technical | Leave a comment

Is it sinful to Use Cuss Words

Plenty of articles out there trying to justify that the Bible speaks against curse/cuss words. I'm not talking about making profane statements or speeches which are made up of a bunch of words. I'm referring to singular word like: Fuck, Shit, Damn, etc. Of course, in other languages, they have their own set of "accepted" cuss words.

Another term for this is "dirty words".

I don't think the Bible ever teaches against this. Profanity, swearing, yes, but not specific words that somehow the majority of society has collectively accepted as "dirty words". These "dirty words" are not vain, they have meanings assigned to them. Fuck means having intercourse. Saying "having intercourse" is acceptable, but not the word "Fuck" in the social norm. Why is that? They both designate the same meaning.

So instead of shit, kids are taught to say "poo" instead. "Making love" instead of "fuck". Of course, one may even get so uncomfortable saying any of these culturally accepted substitutions and turn the whole language very general: "Going to toilet/ Taking number 2" instead of saying poo, "sleeping together" instead of fuck. The less specific the better it is. Hence, sacrificing details in speech. I think this is treading on sinful ground as well - not making clear statements.

True, there are times and places we don't just say anything we want, even if they are the truth, just like we would hide our nudity in public. So I'm not talking about such cases. Yet, often times, we hesitate in our speech to find a less offensive terms despite of non-offensive intention. I think it is not necessary.

That doesn't mean that we should now start using these "dirty" words. We should speak truthful and contently. Some people use these "dirty" words sinless, I must say, because of their own background, the kind of people they grew up with, but their hearts are purer than those who even refused to use the word "poo". Some of us have trained ourselves to use our own substitute words or languages, that is fine too, as long as we do not take those "dirty" words as if they have some bewitching essence (Idolatry/lies) nor having some unclean property (lies/calling God's creation unclean). It is the heart that is unclean, not the words. Words are just words. How we use them matters as they communicate our hearts, but the culprit would always be us, not the words themselves. So for the sake of others, we do control our speech and the choice of words we use.

Again, using of the words in itself is never a sin, just like being strong is not a sin, it is the choice of words out of our hearts and motives that would result in sin.

As a conclusion, I would not use some words if they would cause my brothers to sin, as they lack faith. I would not be sinning by merely using these words.

Posted in Theologization | Leave a comment

Pope Francis Changes the Lord's Prayer Translation

Source: https://www.foxnews.com/world/pope-francis-lords-prayer-our-father-change

The Catholic leader changed the phrase "lead us not into temptation" to "do not let us fall into temptation," as mentioned in the gospel of Matthew 6:13, because the original translation implies that God induces temptation. The change, officials said, is closer to the original intent of the prayer.

"I am the one who falls; it’s not Him pushing me into temptation to then see how I have fallen," Francis explained to Italian broadcasters about the phrase change. "A father doesn't do that, a father helps you to get up immediately. It's Satan who leads us into temptation, that's his department."

This is a no brainer: The Roman Catholic theology does not admit the noetic effect of sin. So, they presupposed that we walk not in sin at some level until we walked into the hole of temptation. But then they contradicted themselves when they say: We are all sinners. Secondly, because of such lousy theology, they could only conclude the alternative being God "pushing" me into temptation, as if I was holy to begin with.

Posted in Theologization | Leave a comment

Do the American Fundamentalists reject other churches as churches on their pulpit?

Often times I hear American pastors in the pulpit demanding that congregants should follow their leaders. As if blindly. Obviously, they are not saying that this includes heretic leaders or blindly follow incompetent leaders. They are saying this under the umbrella of trusting and obeying Christ. However, the lack of expounding the other side of the truth is always lacking among these preachers. As if they inherited a sort of intellectual shallowness from the fundamentalists in the 20s, the Bible college camps.

The lack of "go out and experience more", consideration of various problems of diverse Christians, from these preachers are deafening. I imagine if I were to ask them: What about following leaders in those charismatic churches, liberal churches, etc. I can bet that their responses would be: Those are not churches because they aren't Bible believing churches.

On the contrary, I see Joel Osteen's church as a church, I see many problem churches as churches. If there's a church that's not a church, it would be that of the Mormon's, Jehovah Witnesses', etc. These strident fundamentalists just somehow lack something beyond their comfortable never growing American inheritance to perceive a bigger picture. I see a female pastor's church as a church while many of these fundamentalists would just say: everyone is disobeying God for calling this a church.

It's as if they are moving towards legalism: mandatory family Bible study, no work on Sundays, etc. They preach all these on the pulpit but when they are facing these issues from the congregants' mouth, they would treat it as if they never preached what they preached, as if there' some exceptional clause in their preaching against these things, like doctors have to work on Sundays since Jesus heals on Sabbath; but if there are exceptional clauses, why aren't they mentioned during the sermon? Either way, somehing is wrong.

This is of course, due to lack of evangelism, outdoor preaching. Something they have educated themselves against today.

A good preaching to me is always one:
After hearing, the congregants are moved to love, praise and study God even more.

Any other kinds of preaching, are in error with God. No matter how much they claim they are of God. I can write notes against it, during these sermons, thereby still satisfying it being beneficial to me through God's blessing, but I will not refrain myself from criticising.

Posted in Theologization | Leave a comment

Vocab: Perspicacious

Kathy’s Word of the Week 2019-06-24

Weekly Brain Food brought to you by our VP of HR

perspicacious

Pronunciation:
pur-spi-key-shuhs

Definition:
having keen mental perception and understanding; discerning

As used in a sentence:
It offers quite a few facts to the perspicacious reporter.

Posted in Vocabularies | Leave a comment

My Folding Floor Chair & Desk Idea

Basically, this folds into a briefcase. I don't think this idea is out there yet. But it's not very complicated. It's meant to be very portable. The hinges on the desk allows the desk board to be swivel open, to allow user to get into the chair. The base of the chair has a decent height at the same time providing storage room for back rest and desk as they fold into storage position.

Floor chair also benefits those who prefers to stretch their legs while sitting.

Posted in Authoring, Projects, Technical | Leave a comment

Vocab: Erudite

Kathy’s Word of the Week 2019-06-17

Weekly Brain Food brought to you by our VP of HR

erudite

Pronunciation:
er-yoo-dahyt

Definition:
having or showing great knowledge or learning

As used in a sentence:
Kathy could turn any conversation into an erudite discussion.

Posted in Vocabularies | Leave a comment

Getting 1199SEIU to correct DOB is a pain

So I called this morning (646-473-9200), as instructed by my chiropractor clerk, who was instructed by the insurance company when she tried to file claim after having my DOB corrected. I was supposed to call a Mr. Harkless, but it's just to reach their COB (coordination of Benefits) department, for my National Benefit Fund as a secondary.

All this call is just to verify myself. They better cover 100% as promised, for up to 20 sessions / year, not that I plan that many visits.

Posted in General | 1 Comment

Jesus lied?

After listening to Rev. Paul Murphy's latest sermon: The Truth about Lying, I definitely have a bone to pick, because it is unexpectedly serious. It's quite an err. WHY?!?!? I'll get to it at the end of this.

I would have never thought Murphy would go this shallow. First, he watered down the definition of lying, to the point where withholding the truth is also considered lying, as well as telling a different truth, trickery in battle fields, concealment of facts, etc. in order to justify his message: lying for the greater good, viz. to preserve lives. Thus "lying" in some situations is not only permitted but required at times.

Then he compared the commandment against lying to the 6th: Thou shalt not murder. If killing is permitted and can be justified, then the 6th commandment has an exception, he said. Has he not heard of some exposition on the differences between murder and killing? I think the theory behind murder vs. killing could use more work, but it's far better than diluting the differences all together.

Then he raised about 9 biblical passages to support his claim. I'd just touch a couple of them because Murphy's basically just justifying himself with these verses by 1. muttering the definition of lying (i.e. anything more than telling or doing something you know is contrary to the truth), and, 2. committing a logical fallacy: Propositional fallacy - affirming the consequence (i.e. If I don't get burned, then my lying is justified).

Murphy's definition of lying includes tricking your opponent in games, etc. This is not lying as they are called tactical maneuvers or stratagems in games or battles. As both sides should expected their opponents to play in the rule of games. It is different than witnessing in the manner of a contractual relationship.

1 Samuel 16:2: Where God told Samuel to say he has come to sacrifice to the Lord, instead of anointing a new king. While Murphy justifying this as a lie, God's "lie", one can easily find multiple reformed answers against such online: i.e. here. My personal lesson from this passage is that God is rebuking Samuel indirectly. The type of rebuke only a true man of God would recognize. That the sacrifice is more important. The line of David will come to The Paschal Lamb! So, to conclude God lies or tricks from this, one would definitely fail to see this.

Luke 24:28: ...He "acted" as if he were going farther (ESV) The Greek word being προσποιέομαι (G4364), which is similar but not the same as ὑποκρίνομαι (G5271) = hypocrite/feign, see Luke 20:20. Just because someone called his wife's ex-career (actress) a liar, doesn't mean Murphy should fall for it. There really is no issue despite the omniscient of his divine nature, Jesus would have gone farther otherwise. There's no purpose nor ignorance to be a lie, if one were to insist it being a lie.

I don't know why Rev. Paul Murphy would preach such message, for it is very very contrary to the reformed image that he has been exhibiting. I have a guess...that he probably got caught telling a lie recently, probably even a white lie, and got offended. Hence, this sermon. As for misdirection in the code of sports and battles, that's just a test of agility, wits, etc. Nobody will complain about that before the judgment seat. I guess Murphy's not much of a sports person all his life.

Trust God. Murphy was essentially saying that God is powerless at times without the help of lies and deceptions. There's a serious theology failure the West is committing today, among the reformed, which is why they cannot evangelize properly. That is why God does not bless them with numbers. Because they trust their own calculators more. They lack faith in God to do the impossible.

I shall pray for him. This is a weakest point of his character I believe. I fear...no...I should praise God, should it be a time, an opportune time, God wants to use me to do to the West what he's done in Dr. Tong's ministry.

Posted in Theologization | 4 Comments