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осциллограмма

диммер

своими руками

крутая схема

простая схема

собрать диммер

легкий пуск

снаберная

помехи

плавный пуск

супер самоделка

не собирайте

как эксплуатировать

00:00:01

so another purchase

00:00:05

made in China, such a small, pretty

00:00:08

saw, light, has small dimensions, good

00:00:12

speed on the chain, 12 meters per second, everything

00:00:16

seems to be good, but it’s annoying, only one

00:00:19

thing is missing: soft start,

00:00:22

now I’ll do a few

00:00:24

short-term starts to

00:00:26

demonstrate how it starts for

00:00:47

me, starting without a soft start is

00:00:49

It’s uncomfortable, in principle, not all

00:00:53

models of power tools, including the

00:00:55

well-known branded ones, come without a

00:00:58

soft start circuit,

00:01:00

but still there is a soft start and a display for the

00:01:03

tool,

00:01:04

so you need to do something about it, so I’ll

00:01:08

start upgrading this

00:01:10

power saw dimmer circuit for a soft

00:01:13

start

00:01:15

first we need to find a place where this

00:01:18

tent can be placed; we disassemble the

00:01:22

control handle in which the

00:01:25

start button is located; the electrical circuit

00:01:53

inside is nothing special; the circuit is banal;

00:01:57

it consists of two filter buttons; there are

00:02:00

chokes and a capacitor;

00:02:14

you can insert an electrical

00:02:17

soft start circuit of any size, this is what I will

00:02:21

use, the

00:02:24

preliminary circuit will be like this,

00:02:29

in my opinion, when assembling and debugging this

00:02:32

circuit, there will be no difficulties in assembling and

00:02:36

this soft start circuit is based on a

00:02:38

specialized microcircuit in 2010, there is

00:02:42

a link with examples of printed circuit boards and

00:02:45

examples of ratings

00:02:46

I I’ll attach it in the description of this video, I’ve already

00:02:52

made this circuit for other

00:02:54

power tools,

00:02:55

so it was time to make sure it

00:02:58

works well and reliably for this

00:03:01

chain saw, and in the same way, based on

00:03:04

previous experience, I’ll assemble this circuit

00:03:07

specifically in this case of modernization, everything

00:03:11

will be assembled like this

00:03:13

schematic diagram and so

00:03:20

my circuit is already assembled on a printed circuit

00:03:24

board and this is how it looks in its natural

00:03:26

form, I can say that the price of such an

00:03:31

assembled board is not at all stupid,

00:03:33

the price for the main components is

00:03:36

25 cents for this microcircuit and 15

00:03:40

cents for the thyristor, but in general, of course, it’s an incomprehensible

00:03:44

commercial move why such electrical

00:03:46

tools are not equipped with a soft start,

00:03:48

since on an industrial scale the price of

00:03:51

such a function will be very small

00:03:53

in the process of manufacturing, setting up a circuit

00:03:57

based on a microcircuit in 2010 b, they did

00:04:00

some research on the operation of a soft

00:04:02

start,

00:04:03

so I can show a video with a power gram of

00:04:05

how it works when power is supplied to

00:04:07

electric saw engine

00:04:09

with soft start and without soft start,

00:04:12

for starters, let's look at the process of starting an

00:04:15

electric motor without soft start, for

00:04:17

example, I will do several

00:04:18

short-term starts with a stop

00:04:27

[music]

00:04:32

here we see what happens instantly

00:04:34

and the supply of full voltage to the

00:04:36

electric motor and accordingly

00:04:38

we get an instant start

00:04:40

like me I already said that I don’t really like

00:04:43

starting up in this mode

00:04:46

using the adjustment knobs, we stretch

00:04:49

the oscillogram

00:04:50

visually from this oscillogram you can see

00:04:53

that the voltage is supplied to the engine

00:04:55

instantly, the only thing you can

00:04:58

additionally see here is that during the

00:05:00

first three network periods there is a

00:05:03

drawdown of the mains voltage by about

00:05:06

5 percent

00:05:07

Then, when the electric motor is operating, we observe a

00:05:10

normal pure sinusoid of the mains

00:05:12

voltage. After the

00:05:15

homemade dimer board for a soft

00:05:18

start was assembled, I also tested it using an oscilloscope

00:05:21

and debugged the

00:05:25

oscilloscope readings and took a video.

00:05:27

Now you can see how

00:05:29

electrical voltage is supplied to the motor of an

00:05:31

electric saw with a soft start for

00:05:33

demonstration. I make several short

00:05:35

starts with a stop, let it happen

00:05:46

smoothly; the

00:05:53

oscillogram also shows that the

00:05:56

voltage rises smoothly

00:05:58

and, accordingly, a smooth start occurs,

00:06:10

so I’ll take a screenshot of the oscillogram so that

00:06:13

later I can return to it again and

00:06:15

look at the time intervals of the

00:06:17

voltage increase using the

00:06:24

adjusting control knobs,

00:06:27

I stretch the horizontal scale in

00:06:29

steps of one. the cell is again milliseconds, this

00:06:33

will allow us to examine in more detail the

00:06:35

operation of the dimer within one period of

00:06:37

alternating voltage, it is

00:06:42

clearly visible how the regulation occurs

00:06:49

from zero to one hundred percent, we can

00:06:56

visually see a smooth increase in

00:06:58

voltage, the

00:06:59

opening of the semester occurs steadily,

00:07:02

regulation from zero to one hundred percent of the

00:07:04

power is smooth, such a stable

00:07:12

power regulation is ensured in

00:07:15

Due to the use of a specialized microcircuit in the circuit

00:07:16

of the 2010b,

00:07:33

the functions built into this

00:07:35

microcircuit by manufacturers cannot but rejoice at its

00:07:37

benefits, and now I will not delve into the

00:07:40

properties of the functions of the u2 10b microcircuit, you

00:07:43

can read about this in the form

00:07:45

The main nuance is the construction of a

00:07:48

soft start circuit for a certain power

00:07:51

power tools, using this oscillogram,

00:07:58

you can also make a comment about the

00:08:01

tail that you see at the end of the village of the

00:08:04

frame, this is what noise occurs when the

00:08:07

engine is forced to brake, in a nutshell, how the

00:08:10

manufacturer implemented accelerated

00:08:13

braking for the electric saw motor,

00:08:15

this was done electrically

00:08:18

using a 3-pin starting

00:08:21

switch and it provides after

00:08:24

turning off accelerated braking of the

00:08:25

engine and the saw chain,

00:08:27

if we consider the electrical circuit of the

00:08:30

pin, then in it the start button has three

00:08:33

outputs and 2 contacts,

00:08:36

one is normally open, after pressing the

00:08:40

start button it closes and through

00:08:43

it the power supply is supplied to

00:08:44

the motor

00:08:46

after disconnection, through the second contact,

00:08:49

normally closed, the

00:08:51

motor windings are bypassed and

00:08:53

it turns out accelerated braking,

00:08:56

it has become a frame, we see such a tail in the

00:08:59

form of noise,

00:09:03

let’s see what we have here with time

00:09:06

periods, braking is equal to two

00:09:09

cells and each cell is 250 milliseconds,

00:09:13

which means that the engine braking and the

00:09:15

chain stops approximately in half a second,

00:09:21

and by the way, the acceleration time if you set it once

00:09:24

temporary markers then in general we get

00:09:26

about one second

00:09:29

you see how easy it is with the help of an oscilloscope

00:09:31

you can see the whole picture as a whole it’s

00:09:35

like in that proverb it’s better to

00:09:36

see once than to hear a hundred times so I

00:09:46

soldered everything to the tray and installed it in the case like this

00:09:50

now it’s all located and This is what the

00:09:52

scarf looks like with all the parts, it has

00:09:55

very little weight and it is connected on

00:09:58

rigid conductors, so the masonry

00:10:01

is located in its own compartment without any fastenings,

00:10:04

nothing will happen to it there, and

00:10:18

so we will

00:10:20

connect the body in place, just in case,

00:10:23

before assembly, I checked the operation of the

00:10:25

start button so that there are no surprises after

00:10:27

Assembling the electric saw,

00:10:29

everything is fine, you can tighten all the screws,

00:10:50

we connect the case with the start button,

00:10:53

the case or with the electric motor of the electric saw,

00:10:56

now we connect the electric saw to

00:10:59

the mains power supply, we don’t check how the

00:11:07

soft start occurs, to check,

00:11:11

I do a few short starts

00:11:13

of the electric motor, this mode of operation is fine,

00:11:30

I like it better with the help of

00:11:42

a video editor, I can do it again

00:11:44

demonstrate the difference as it was and

00:11:46

how it became holidays work visible

00:11:56

unarmed take again modernization

00:12:00

took place successfully everything turned out great

00:12:07

and see the link to the description of my version in

00:12:13

2010 b in the description of this video

00:12:16

thanks for your attention

Description:

Ссылка на форум с файлами https://sxem.org/forum/skhemo-temy/693-byt-elektroinstrument-plavnyj-pusk-zashchita-ot-peregruzki-i-obratnaya-svyazyu-po-toku#48669 Регулятор оборотов двигателя с поддержкой мощности U2010b, на алиэкспресс http://got.by/50y46t

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