DIY charger from grandfathers times

[@kensmith5694]

BTW: The bridge makes a full wave rectified shape. The zener flattens the tops. On the tail end of each alternation, the voltage on the trigger circuit falls. This makes the voltage from the resistor divider feeding the base of the transistor fall. This makes the circuit fire more easily late in the alternation so low power settings work well.

[@jiangnanyouzi_6716]

yeah,you're right

[@kensmith5694]

Note: In common English for the US at least: "open" means the connection is not made and no current "closed" means the connection is made and the current flows. Other languages do it very differently. "Open the light" would mean to make the light work much like "open the tap" gets you water.

[@rushb9388]

It's bad translation from Russian "открываются" (opens) and "закрываются" (closes)

[@kensmith5694]

@@rushb9388 Yes, many cultures do "open the light" for making a light to its thing.

[@UpcycleElectronics]

Hey Kasyan, Recently I have been trying to replicate the finish quality of old Fluke circuit boards. If you've ever taken apart an old fluke rack mounted device from the 1980's or older, you will know what I'm talking about. Most of the boards are etched and tinned but are not covered in a solder mask. The tin is super shiny and looks really nice. I tried to copy this finish using Liquid Tin to plate some boards, but this doesn't look anything like the old Fluke boards. It's really a dull finish. I gave up trying to replicate the fluke boards for awhile and just plated my boards with a soldering iron like you did here. A couple months ago I was cleaning up some scrap copper clad and part of it was already tin plated. While cleaning it I noticed my method caused the tin to get much more shiny. When I first clean copper clad I use a ball of stainless steel thick lathe turnings. I don't believe it is actual lathe turnings from machine shop scrap, but these "balls" are sold in the home goods section of grocery stores and other home goods retailers. They are usually in the section with dish soap, sponges, and cleaning supplies here in the USA. I started using the stainless steel balls instead of fine steel wool as a first step for cleaning boards because the stainless steel doesn't create a mess and there appears to be less copper dust afterwards. I don't think the stainless steel removes as much material as fine steel wool. I still use fine steel wool before doing an toner transfer or photoresist, but this is done after the first pass with stainless steel. Anyways, here's how I get perfectly shiny tinned boards that look awesome. Clean the printed circuit board copper until it's perfect and ready to tin. I drench the board in flux, completely covering it. Then with a flat clean chisel tip I place a blob of solder on a scrap piece of copper clad, not on my actual circuit board. Each time I need more solder for tinning I just barely touch this blob of solder on the scrap copper. This prevents me from adding too much solder in any spot on the actual circuit board. After tinning everything I clean all of my flux off and it looks just like your board did here in this upload. If the solder is flat and even at this point the next step will work. I use the stainless steel turnings/ball to lightly clean the tin. This step doesn't take much force or effort. This will remove the haze and very slight discoloration caused by manually tinning the board. It makes the board look much prettier. This is almost as nice as the fluke boards. If the tin is not perfectly even the copper will start to show through the thinner areas. If this happens I cover the board in flux again and tin it a second time. With fresh flux and most of the copper covered, the second attempt will be much nicer as the flux has less oxidation and contamination to deal with. This will also be much more shiny, but I still do the stainless steel polish again. Even after this great improvement in finish quality, I still wanted to try to completely replicate the fluke boards. So, I got some polishing compound for removing scratches from automotive clearcoat paint. After the stainless steel cleaning, I polish the tin by hand using a rag and the polishing compound. This really doesn't take very long. Tin polishes very easily. The end result is a perfect mirror finish. It's actually nicer than the fluke boards. It takes around a week for the tin's perfect mirror finish to dull to the same finish as the old fluke boards I have. I think they must have used a similar process. The results look really awesome. It's the kind of thing that would look really good on camera. Even after the mirror finish dulls, it is an even uniform finish that looks very professional. If you have the right technique and soldering iron settings all of your soldered components will have the same mirrored appearance too. It can look really really good. This looks like jewelry next to a board covered in soldermask :-) -Jake

[@curtisoneill9929]

I just need to find a museum for these parts

[@kensmith5694]

Kapton tape works better than epoxy. If you use epoxy, wait for it to fully-fully harden before any voltage is applied. Wet epoxy conducts slightly and is damaged by conducting.

[@jandouda7802]

I love these oldschool construction with transformer and thyristor. Your all SCR battery chargers are great, i want a make too a some this charger. Do you know make car battery charger from ATX power supply? 🙂

[@electronic7979]

Very good video

[@jamest.5001]

I heard pulse charging helps desulfate lead acid batteries, as long as the peak voltage is high enough, with the average around 16-18v or so. But who knows, surely if the voltage is higher, it will push current to the battery, I have a project similar, not bear as complex, I just used a DC converter to deliver adjustable voltage!

[@blg53]

When doing an English language video on electronics I recommend you do not use the "open or closed" terminology, but use the "switch on or switched off" one. A native English speaker would interpret "open" and "closed" in exactly the opposite way that you, me or any bi-lingual means. Bear that in mind.

[@rushb9388]

It's a bad translstion

[@MCsCreations]

Really, really interesting!!! 😃 Looks like a great circuit!!!

[@CMarkulis]

Very interesting, especially the effeciency. In my old elctric car they hab build a charger with thyristor, too, but it only switches on and off on two voltages. If this would be intetesting for you, i can send you the original description. Thank you.

[@r0_]

i think you mean silicon controlled diodes because thyristors let trough power in both ways when powered on

[@ruimvp]

and triac?

[@EdelSM]

scr and triac are both thyristors

[@ocayaro]

Rick graphite You are incorrect. You mean triacs. Thyristors are actual silicon controlled rectifiers (SCR) or diodes. That’s basic.

[@ocayaro]

Edel SM Wrong.

[@EdelSM]

actually this is subjective. some called scr or triac thyristors, but the correct way to address them is by calling scr (if it is scr), or triac if the device is a bidirectional thyristor. the term thyristor is now "generic" which refers either scr or triac - a four layer device controlled by a trigger. calling a triac or scr a thyristor is not wrong. it is similar to calling fet/mosfet/bjt a transistor. of course, if you want to be specific and you want to address a unidirectional thyristor, you would call it scr.

[@sonalinaldurgkar4384]

Diy solar charge controller pwm or mppt

[@jamest.5001]

Yes, a high current, mppt would be nice, 50-100 amps!! 100-150v input!

[@juliusparker3039]

Can two anode transformer be use and how

[@electroniquepassion]

Nice 👍👍

[@dimitriosvlamis8696]

Where can I find Soviet Union electronic components?

[@r0_]

try aliexpress

[@rushb9388]

They are very rarely found outside eastern Europe, try looking on eBay or look up modern equivalents. You can use thyristor 2N6509 or similar.

[@ninethirtyone4264]

There are western equivalents to all of them just look up the specs

[@jiangnanyouzi_6716]

The transistors and thyristors don't have to be the same,you can easily replace them with what you can get.

[@DolezalPetr]

I like it, very interesting

[@parthoprotim5212]

Everything you build with the project is not available everywhere

[@kensmith5694]

Many other places have other suppliers. Getting creative is often needed.

[@parthoprotim5212]

@@kensmith5694 thanks for reapply me

[@dan2800]

Russians dont have stable voltage at the outlet😨😵😭

[@kensmith5694]

In China I saw voltages from 150 to 250 on the same outlet. In the US the mains is between 110 and 130 almost all the time.

[@Qaiserhayatkhan]

Nice🙌🙌🙌🙌🙌🙌🙌

[@sonalinaldurgkar4384]

Diy solar charge controller

[@jimpyu]

Is that a real person or an advance text to voice application?

[@yagneshpatel1183]

Real person bro . Voice narrator

[@shoumikahmed6373]

😊😊😊😊

[@MichaelVx]

it's very complicated and not easy

[@subigirlawd_7307]

It gets easier the more you learn 👍

[@kensmith5694]

This is not a good first project but a quite good later one.

[@dragon98940]

The way you explain the working is great. But you are always telling open circuit and closed circuit oppositely. That is when the thyrister is conducting it is actually closed. When the thyrister is not conducting it is called open circuit. But you are telling the other way around. In all of your videos open and close are oppositely told. ___/___ is open. _______ is closed.

[@jimpyu]

Is that a real person or an advance text to voice application?

[@rushb9388]

text to voice and bad translation

[@kensmith5694]

@@rushb9388 I think it is a real person trying to work in a language. The accent on words would not be like that it a text to speech system.