A game proposal as 1st Newbie topic - Page 1
Forum section: electronics / beginners

author: Egzoset
author_rank: Newbie
timestamp: July 23, 2020, 08:07:41 am
content: Salutations,As a 1st post i thought i'd need to write an "intro" but maybe it's not required after all, yet just in case i might happen to be mistaken please allow me to include one anyway, although it's actually published in here under the form of a single image (*)...It should suffice to inform the audience about what my hobby is all about and why i'm now posting here.To clarify even further here's some additional hint which should evoke an idea of what i've been investigating more recently, in a most eye-catching manner i hope:Feels familiar?...So lets now proceed with what i had in mind when i chose my announced title: it's an invitation to play finding schematic errors present in the hypothetical circuits submitted below... Just a matter of read, interpret and comment for a relaxing launch!Good day, have fun!!

author: Egzoset
author_rank: Newbie
timestamp: July 24, 2020, 11:37:28 am
content: Hi there, again!Here's some hints to help break the ice, in hope that's possible.Mazzilli relied on a diode to cross-connect the gate of power transistors to their ouputs for direct feedback, m'well with a bleeding resistor as "shunt", that is. Apparently his "ZVS" circuit involved a center-tapped induction device (transformer or IH "workcoil") with one single capacitor (or capacitor bank)...If it's still on-line somewhere i truly need to see a schematic drawn by the hand of Vladimiro Mazzilli himself, with its accompanying text ideally. Meanwhile i can only assume the parallel addition of a Zenner diode to gate shunts became an early necessity after further experimentation(s). Euh...At least Mazzilli's D.C. gate bias resistors as duplicated seem original in principle, but then where's RF Bypass and/or A.C. Decoupling?? Go wonder, might such absence actually contribute to a Mazzilli's topology! I'm puzzled.Anyway, i hope my 1st relay idea was received with almost as much playful sense as i used to invest in my own drawings... Imagine that thing (marked "locked") in a low-voltage situation: no joy there IMO! Quite honestly it's not even clear in my mind that a "sweet spot" can be found to render this functional, but it certainly illustrates my initial motivation, which is to activate a relay's coil when some over-current event occurs. Yet, good luck working out the magic, not to mention a requirement to keep some valid choke around.As for my most patriotic conclusion it should be evident neither of both opto-coupler LEDs is ever allowed to light up with a schottky diode across these and their respective current-limiting resistors. What's even more amusing now is that the correction to perform appears just as evident if one pays sufficient attention.Too bad i feel too lazy to illustrate the rest as well!...Good day, have fun!!

author: mc172
author_rank: Frequent Contributor
timestamp: July 24, 2020, 12:20:28 pm
content: Figuring out the point of this was more difficult than figuring out whether it's best to go to Specsavers or drive to Barnard Castle.

author: Egzoset
author_rank: Newbie
timestamp: July 24, 2020, 02:19:54 pm
content: Salutations,Quote from MC172:>Figuring out the point of this was more difficult than figuring out whether it's best to go to Specsavers or drive to Barnard Castle.Or vice-versa, especially when considered from the other side, euh...M'well, here's something to set things straight, supposing it's OKay under the circumstances:Japan Analytical Industry Co., Ltd. -Curie Point PyrolyzerYou see, "it's already been done before, but just not yet!", euh...Imagine, 21 Curie temperatures ready-made and commercially available! Sold as "PyroFoil":1040, 920, 764, 740, 670, 650, 590, 500, 485, 445, 423, 386, 358, 333, 315, 280, 255, 235, 220, 170, 160.Which target temperature(s) do you need??Ah, and the best part of it is this i believe:[http:// [url=http://www.jai.co.jp/english/company/history.html]www.jai.co.jp/english/company/history.html]Nov.1969-- Released the first Curie point pyrolyzer JHP-1.So, we're practically back to the Apollo era, all the sudden!!Oh well, the link to be made here was that an IH driver is going to be required in order to benefit from such unique characteristics as just mentioned.As far as i'm concerned all necessary details on my eventual susceptor have been providedalready, in case anyone cares to have a look. It's only a matter of injecting some ~100 Joules "Heat Charge" within 2 ~ 3 seconds, possibly on current high-density batteries technology as from the e-Cig realm...Good day, have fun!!