901

(1,528 replies, posted in Fantasy/Magic & Sci-Fi)

njc wrote:

Okay, the problem with the head amp is that I'm only getting a gain of 2 instead of 20.  I'm feeding the thing through an attenuator cable so I can turn the input down far enough, and it's easy to forget that the attenuator is 1/100, not 1/1000.

That's why I didn't see the problem.  Now, what's causing it?  Maybe my voltage stabilizing network.  If so, I think I know how to fix it ... but I'll have to find room on the circuit boards.  I need to test it on the breadboard.

First sleep, then the first set of shelf mods.  The second set I can do or hold, but I'll need to see if I need the third set.  If so, it's a trip to Lowes or Home Depot to get some melamine-covered board cut -- and get some 8d common nails, hoping they're the right diameter to cut for pegs on those shelves.

This is what I was guessing too! (who am I kidding?). Hope the fix is easy as! Has the inspection been done yet?

902

(1,528 replies, posted in Fantasy/Magic & Sci-Fi)

njc wrote:

And I just had a talk with my brother.  I need to find a way to visit my mother soon and regularly.  The doctors say that they don't have anything more to help her weak heart.   They are guessing weeks to months.

Oh no njc. All the best and my thoughts are with you too.

903

(520 replies, posted in Fantasy/Magic & Sci-Fi)

amy s wrote:

Sorry for automatic spell check. First sign is usually a temperature and then big redness, cellulitis and then pus collection.

LOL, yeah, that made no sense! smile

I have the women keeping an eye out, but she'll leave before they know for sure whether she has an infection - I can't have her hanging around Dacre Tower for 3 days. But for now, I think she might just be at Norwood Castle, so Matthew can (organise) to have it picked up again when she's there.

Thanks!!!

904

(14 replies, posted in Cop Shop)

John Cusack (for the extra credit wink )
First - America's Sweethearts
Fav/crime - Identity

Jack has included two of my all time favourite movies - Ocean's Eleven and US Marshals.

I would also add The Vanishing for Jeff Bridges.

Wished the list could include Keanu Reeves - then Point Break will feature heavily as a favourite with Speed also worthy of a mention!

905

(520 replies, posted in Fantasy/Magic & Sci-Fi)

Amy, I also have a quick (I think so at least) question. Catherine was shot just after midnight. They eventually arrive at Dacre Tower at dawn. Only then is her wound cleaned and slathered with honey before being stitched up. And now I have no idea how soon you'd be able to tell if someone has infection ie when the first symptoms will start showing. I have it as nightfall, the same day, at the moment ...

Thanks, you're a dear! smile

906

(520 replies, posted in Fantasy/Magic & Sci-Fi)

amy s wrote:

Wait until I repost for points tomorrow. New Jersey gave me an entire rewrite worth of material and I'm making my way through that tonight.

I missed the deadline. sad I'm still going to read the rest - let me know if you're still interested in a review because I think you've mentioned you didn't just write it for the contest ... Next week looks good.

907

(11 replies, posted in TheNextBigWriter Premium)

I miss having you around Linda, but family comes first. All the best with your new challenges in life and you are in my thoughts. Janet

njc wrote:

Okay, here's the current circuit work--a version of W. Marshall Leach's two-sided common-base head amp.  Two needed, one each for left and right channel:

http://i1065.photobucket.com/albums/u394/njGreybeard/Schematic_zpsi5iig6ie.png

The parts that carry DC and that involve bias setting the operation point are in blue.  The red parts carry only signal.

Neither end of the battery is referenced to ground.  The two amplifier transistors (stacked at left) have their bases referenced to AC ground through capacitors.  Much smaller capacitors serve as high-frequency (radio-frequency noise) bypasses between the input on the emitters of the transistors and the transistor bases.

The transistor alone near the center is in a voltage-regulating circuit.  Unfortunately, so simple a circuit working by itself can't hold the voltage stable enough against supply variations (as the battery runs down) so a second trick works against it.  It tries to hold a steady voltage between its two ends; each end draws from the adjacent supply rail through an 820K resistor and feeds the amplifying transistor base through a 750K resistor ... but the 750K resistor forms one side of a voltage divider.  The other side is 10x larger, 7.5M, to the opposite supply rail.  The 10% pull from the opposite rail opposes the imperfect regulation, improving the control several times over, keeping the collector current in the resistors within about 0.6% of its center value.  The highest collector current occurs with the battery a little more than half depleted, so the low-current extremes are at new-battery and exhausted-battery.

I haven't plotted the curve, but here are the test values: 7.99 volts, 97.8 microamps; 7.60, 99.0; 7.18, 100.6; 6.78, 101.8; 6.41, 102.7; 5.98, 103.3; 5.59, 103.2; 5.19, 102.7; 4.80, 101.2; 4.41, 98.5 .  You'll notice that although it's a 9v battery (9.6v when absolutely new) I start at 8.0 volts.  That's because I'm supplying the amplifier through a pilot-light LED, which produces a small but visible glow even at fifty microamperes, while dropping only 1.6 volts.  (At its rated 20 mA, it's very bright, but a small dot that doesn't actually illuminate much.)

You'll notice that the currents are lower than the 120 uA to 150 uA I need for 20x amplification.  I have to drop the 820k, 750k, and 7M5 resistors by about 30%, and I might need to drop the 3M0 and 13M resistors on the regulating transistor to keep the curve centered.

Since the curve changes direction, it must represent a function of at least second-order (quadratic).  I suspect it's something close to a cosh (hyberbolic cosine), but I'm not going to try to combine three Ebers-Moll models with the network algebra.  My algebra muscles aren't flaccid, but they're not ripped either, and it would take me several days to get it right.  (This is something you do in full-sized notebooks, not half-sized.)

I've had to layer this on top of the work I'm doing, so I have a very messy workbench.

The layout isn't quite what it will be in the final package because of the limitations of the breadboard.  If you look very carefully on the left, you can see the regulating transistor behind its resistors in a kind of outrigger.

The amplification and phase relationships are nice and flat from a little under 20Hz to about 33 kHz.  Leach has a very nice design.  My big concern is how much extra noise my voltage regulation introduces.

I had to re-read it a couple of times (and I didn't read much of the grounding stuff - all I know, and want to know, is that I never want to be the easiest path for current to find earth ever), but I think I now understand most of it. I must admit, I have an advantage over most of you ... AC/DC (the rock band that made AC and DC famous) is from Aus. smile

Thanks for the sketch - and yeah, your bench looks even busier but I have to admit I didn't think it was possible, so I will never doubt your ability ever again njc!

So here comes the dumb questions that may or may not also expose my tendency to go the path of least resistance that may or may not indicate that I'm really lazy sometimes.

Why do you have to use batteries i.e. can't connect to a power outlet? That way you don't have to account for different voltages. And is there any specific reason why you're building one from scratch? I'm guessing it's because you can't buy already built head amps anymore. Not sure if it has ever been a stock standard item that could've been bought.

I grew up with vinyls and turntables, my dad used to have one. But when I left home, CDs were already in play and I never owned one, so I know very little about them. And yes, I'm using ignorant as a valid excuse! smile

Norm d'Plume wrote:

NJC, I recognize a 9-volt Energizer battery in your pictures. If I put that on my tongue it hurts. Besides that, is there anything else I need to know for tomorrow's exam? :-)

Dirk

Surely you recognised a pen here and there too?

Norm d'Plume wrote:

Okay, fess up. You both googled it, didn't you?

I googled it. Purely for research purposes of course. *rubs sulphuric acid into eyes* I wish I got porn.

I think "writing what I read and know" is probably closer to the truth for me. There are some similarities between my current MC's in Northern Skies and me as well as people close to me (like a certain dark hair, green eyed hubby), but that's where it ends - the rest is truly all made up and the next books will probably be based on pics on the internet or actors or some such. Hubby might look like dream material, but he doesn't have one drop of romance in his 6ft+ frame ... Still love him though, for all his other redeeming qualities of course! smile

912

(1,528 replies, posted in Fantasy/Magic & Sci-Fi)

njc wrote:

Want a scope photo?

It would be nice, but only if it's not too much trouble! (you have enough as it is!)

913

(1,528 replies, posted in Fantasy/Magic & Sci-Fi)

njc wrote:

My housing crisis is turning into a chronic clean-up, which means things will be a mess for a long time.  I've gotten a few dollars for about forty pounds of books, and I'll always second-guess myself on what I let go.  I probably need to clear out another four to ten shelf-feet of papaerbacks (besides those I'm shopping around now), but I may not be able to find buyers for them.

Okay, so now I'm trying to get back to business.  In the next two or three days I want to start to catch up on reviewing, and to start writing again.  It may take me some time to pick up where I left off.

Meanwhile, I'm having my electronic design skills challenged.  See users.ece.gatech.edu/mleach/headamp , first design (dual-ended common-base amp, no current mirrors).  A very nice design, but a long start-up (settling) time because of the extraordinarily low-frequency limit on its input side.  The output side's low-frequency limit appears to be a decade higher (but still below  the stock 20 Hz).  And the floating battery means that powering two of them off a common supply requires some trickery.  (The article tells of a manufacturer who did it with an incandescent lamp and photovoltaic cells--the sort of exotic excess that Truly Impresses audiophiles.)

I know your pain njc - we've only managed to find the last few things a final spot this weekend and I think what you're doing is worse than just moving to a new place in some regards.

Our collection of books that will never work in a digital format ranges from wildlife photo books to Asterix books before we had kids. The trick is not to buy more ... sounds easy, but it's really hard. But good luck, I hope you find the space you need for the ones you want to keep!

I still owe you a review as well - amy has a deadline, so she's top of the list later this week, but your latest chapter is blinking brightly like 500 LEDs on my radar. Lucky for me, at the rate I'm writing these days, I'm able to keep up with reviews! (it's actually not a good thing at all, I'd still take more time to write any day even if it means falling further behind with reviews). This is just a long way of saying I'll get to it soon-ish. smile

What's this head-amp thing? Is this something you need for the telephone gadget or does this mean the telephone gadget is done or does this mean the electronics "laboratory" (with questionable fire safety as deemed by pencil pushers in a city office somewhere) is being/has been moved and is working again or is not working at all or has been fixed to be deemed adequately safe by the esteemed council officers? Worst case is that you've just added another thing that needs to be built to your list before you have to dismantle your work-bench. Or did I miss something important again?  sad

914

(520 replies, posted in Fantasy/Magic & Sci-Fi)

amy s wrote:

Bandages can shift and shoulders are hard to dress unless you know how to do them. If the lac is in an awkward place, then it could start/ stop. Also, when people relax and the adrenaline wears off, sometimes the bleeding will restart. Have M think that the bleeding is done and over with and then notice her shoulder wound is  still dripping onto the ground as he talks to Henry and Davie.

This is good enough for me! Average readers wouldn't know and will take it on face value whereas more knowledgeable readers will go, yeah, it's possible. Either way, Catherine is on the same horse as Matthew.  who-hoo!

Chapter 2 is slowly ticking along. I really hope to post it this coming weekend. But at least it gives me time to return the favour to those who have reviewed my n-th Chapter 1! smile

I'll get to your latest Collin story and Cop contest short story hopefully sometime this week!  Thanks!

915

(520 replies, posted in Fantasy/Magic & Sci-Fi)

amy s wrote:

You asked: Amy, the trustworthy (sic) internet indicates that roughly 6+ mm deep would probably need stitches, and I think an armour piercing arrow if it hit her just right (or rather, wrong), would be able to do that - some had tips that were wide enough. Please let me know if you disagree

I agree that the arrow slice could need stitches. She would be able to ride, but the use of the arm would be limited. If you want her on the horse with M, then have the bleeding be severe. He'll need to hold pressure on the wound to make sure it stops. Make the cut on the back of her arm so she can't reach it to hold pressure.

Got your back, mate!

A

Ah thanks for this Ames! I didn't yell or scream to get your attention this time, because I know you are really busy with criminal activities! smile

So the next question is, if the wound is bandaged tightly, would he still need to apply pressure? Because as it is at the moment, he is busy talking with Henry and Davie and every man's dog to get the runner while this would mean Catherine is sitting there bleeding to death. It will make K very happy, but not so much my target audience. So I'm thinking just to have her adrenaline rush to come to an end (the bleeding too), so she's shaky, Matthew is concerned and he also doesn't like the idea she should ride on her own because that would cause the bleeding to start again.

Then, once she is over the worst of the shock, it's gloves off and Matthew will ask a few hard, yet pertinent questions while she can't run away ...

Mmm, this is coming together nicely, not sure I'm trusting this given the history with this part of the story?!

916

(520 replies, posted in Fantasy/Magic & Sci-Fi)

KHippolite wrote:

PS: I want my name on the inside jacket with this goes to #1 on the charts

Your name is on the inside, the outside, top and bottom of this one K, whether it hits #1 or not! The money on the other hand is all mine! I'm nice like that. hehehe

917

(520 replies, posted in Fantasy/Magic & Sci-Fi)

Norm d'Plume wrote:

Janet, be sure to spell it correctly: Lady Kay.

Not sure all of that is enough to allow me to use the Lady Kay TM ... yet. Challenge accepted! wink

918

(520 replies, posted in Fantasy/Magic & Sci-Fi)

Challenge accepted! Now to make Catherine's knees wobbly without her losing face. 'Tis but a scratch!

*googles* Sounds like a good idea to avoid grape juice in your state! Either way, I hope it went well with the live ones and you managed to get out safely!

Oh, and Matthew is a gentleman ... *scowls some more*

I still need to check out the updated Part I ... not our best collective moment LOL

920

(520 replies, posted in Fantasy/Magic & Sci-Fi)

Skip wrote:

So, to cut my early morning ramblings short (WAY too early ... 4:00 a.m.) if I were playing a game of Medieval Clue ... I'd pick the shady gameskeeper employed by Anthony

That's A LOT for two cents! LOL Nice deflection at the end there mate, but there's not a soul that would read your spiel and not suspect you ... So much for keeping that a secret?! *scowls at Skip and start looking for a new suspect*

All very true and accurate. As to the why and who, you'll just have to read to the end, the villian shall remain mysterious until the author deem otherwise. hehehe *evil laugh* Nice  try though! wink But trust me, he or she is bad, angry, systematic, and not stupid. Has to be if you want to match him or her against Matthew. I love a good villain. And hopes I can pull it off.

A couple of points on the choice of weapon and ammo. All true, but slightly different on the border at the turn of the century. They remained true to their longbows for much longer than the rest of Britain, because they were bloody good using those things (and they were isolated from London - and Edinburgh). Firearms did become more common, but wasn't preferred in damp weather as one may loose a hand far more than getting your target, and they were expensive, so it all depends on the villain's budget. Crossbows were also used of course.

Also, on the border they didn't use any of the heavy plated armour (some of the higher class did to show off that they could afford it, but never for practical reasons). They used brigandines and jack of plate (or just jacks). Very good at keeping one's skin entact for a fraction of the cost. Chapter 2 will get into what Matthew was or wasn't wearing a little bit.

Bodkin point is an excellent choice, but again, there were a variety of arrow heads to choose from that would pierce armour and depending on the sniper's purpose, would inflict different grades of injury although the wound inflicted would be similar. Catherine was lucky in that the arrow didn't go through her arm, but rather nicked it deeply on the edge of her arm.  6mm to the right would have had her getting away unharmed. 6mm more to the left would have made for a very short and sad romance novel. Fiction gives one that kind of selective power - not at all costs though, it must be possible and or believable still.

But I for one am glad to see Skip joining our ranks, looks like he's going to keep us on our toes! I can do woth more of that always!

But I'm no closer to knowing whether readers will believe me when I have Matthew insist Catherine should ride with him and not on her own ...

ps - Skip, I left some more replies in my in-line review for you ... Hope it helps!

921

(520 replies, posted in Fantasy/Magic & Sci-Fi)

njc wrote:

Adrenaline tends to overcome both pain and injury, with a high price to be paid later.  But if Catherine is worried and doubting the injury will overcome her sooner.

Can she be lashed to her horse?

Now where would the romance be in that when Matthew's strong, wide chest is right there?!

In all seriousness, the wound isn't that traumatic, she was in a bit of shock, but although still shaken, good to go again (unless Amy indicates otherwise, then all bets are off). She needs stitches, but the wound has been bandaged tightly until she gets to an old village woman who can finish the job (treating the wound, not the bad ass's half baked effort). It's just that I don't think she'd be able to ride a horse using one arm given the terrain, there's a lot of hills in the way as well as many streams of various sizes to ford. Matthew will also take a roundabout way just to be safe, he's uneasy about the whole thing and not stupid, but careful, so Catherine won't know the route as well too.

922

(520 replies, posted in Fantasy/Magic & Sci-Fi)

Quick question (I hope) before I get too far with the next chapter for nothing! And then we all can kill lady Kay again. wink

So Catherine has a cut high up on her arm close the her shoulder. It's deep enough to need stitches.

side note - Amy, the trustworthy (sic) internet indicates that roughly 6+ mm deep would probably need stitches, and I think an armour piercing arrow if it hit her just right (or rather, wrong), would be able to do that - some had tips that were wide enough. Please let me know if you disagree ...

So I would like to get some opinions on Catherine's ability to ride on her own horse over rugged, relatively unfamiliar terrain and with darkness increasing/storm clouds gathering for roughly 3 hours if they keep their horses to a walk with this kind of wound. And or would it be reasonable/believable that Matthew would take her with him on his horse so that they can get back to his tower quicker? He can also use the excuse that she's not wearing any armour and it would be much safer his way ...

I'd appreciate any and all suggestions/opinions and pointing of flaws in my reasoning. Thank you!

923

(520 replies, posted in Fantasy/Magic & Sci-Fi)

PByrd wrote:

Glad you're back to posting again! You've made some really good changes to your manuscript. Stepping back, reading others work, then picking up the MS again really does work. I'm stuck in semi-edit mode and haven't moved forward yet.

Thanks Philisha, this means a lot to me and gave me a little skip in my step! But never underestimate all the great support and suggestions from everyone on this site that got me to this point - gives me the strength to go on too knowing that I'm not by myself. I can only hope to return a fraction of the favour!

If you don't get going soon again, I'm sending you to Australia! smile But in all seriousness, hope you get through it and to see you back soon! Let me know if there is anything I can do to help. xx

924

(520 replies, posted in Fantasy/Magic & Sci-Fi)

amy s wrote:

He just vents explosive atmospheres into space.

I'm making a goal. I need to cough up the second part of my K story so that I can fix it before the end of the contest!

*pulls out pom-poms*  you know the drill ...

925

(520 replies, posted in Fantasy/Magic & Sci-Fi)

njc wrote:

Just stay a safe distance from K ...

I'm pretty sure 8 miles from the Canadian border does not meet that criteria ... smile