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ЗАРЯДНОЕ УСТРОЙСТВО с АВТО ОТКЛЮЧЕНИЕМ Своими руками для дохлых АКБ

ЗАРЯДНОЕ УСТРОЙСТВО с АВТО ОТКЛЮЧЕНИЕМ Своими руками для дохлых АКБ

Channel: ДокторCXEM

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КАК ПРОВЕРИТЬ ОПТОПАРУ

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bourgeois equipment, or rather a Japanese

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TV, I found another

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victim of my experiments, this is such a

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detail, an interesting detail on four

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legs, of course it can be mistaken for a

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microcircuit, although in principle it

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is such an attack, well, in Russian,

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it’s an optical pair or an optocoupler is

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also similar to a transistor, similar to a microcircuit with

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only four legs, in principle, you

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can read everything about it in the datasheets in

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my particular case, this is about a pee

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ax 17 l1, so the voltage and the

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operating transistor is 35 volts, the power

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of course on such a case cannot

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dissipate a large power of 150

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milliwatt and I am interested in why I

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decided to become someone to share this experience

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to share with you, that is, I tried to

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conduct a number of experiments with it, but

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before conducting these experiments I

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decided to check this ax and the

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task arose to check the LED and in

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this case there is an infrared one in this pair The

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arsenide LED then

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stands very tightly to this

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transistor. Gallium arsenide allows

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such an LED to operate at very

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high frequencies. It’s just that at terribly

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prohibitively high frequencies

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such an LED is powered by five volts and

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passes through a maximum of 50

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milliamps. I don’t recommend exceeding this

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parameter, but in general it’s better to run

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approximately 20-30 milliamps of this is

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enough for this transistor to open

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almost completely; there is

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one here on the microcircuit.

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it just means this

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diode input on which you should apply a

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plus sign from the battery when we power

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the LED like this, now I’ll try to

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show the optocoupler and this one shines

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near my thumb.

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drawn, that is, inside there is an

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LED and a transistor, here with a

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transistor, it’s a little more complicated, a

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transistor that has an open base and

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its collector-emitter transition is controlled, but this is

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not even a transition, it’s just itself without a

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transistor through an open base with the help of

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light, that is, no bias, no

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check we can do we can’t except

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measure the resistance on these legs,

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but this resistance is the

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same here and there and it’s unknown whether it’s scorched tap tap

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or or not scorched, of course it’s easy to

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solder it into some circuit and by running

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this circuit we can say about grub

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the circuit was working until we soldered it This

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optocoupler, I’m not looking for easy ways, I

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decided to do it somehow, and if

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we say with the first stage, everything

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happens easily, we connect plus

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here minus, or rather, we take a device

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like this diode tester, turn

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it on in diode testing mode and

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observe polarity, as we remember, here the

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dot means plus, observing

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this polarity,

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just use probes on the legs and look, yeah,

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a cleaner has appeared, that is, the LED is not

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short-circuited and not open, that is, in

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fact, it works, we were easily

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convinced of this, but as if with a transistor and

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This is where I want to share with

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you my observations and my experience

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that I have gained floundering with this

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optical pair is quite

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good because its voltage is low and

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you can experiment with safe

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voltages, so we know from

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this point where the advantages and cons and therefore

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we can take and connect our mind meter, it is

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precisely the meter to this transistor,

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also the transistor in most cases is a

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piece of resistance, that is, it behaves

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like a controlled resistance and we

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are going to measure this resistance,

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but the joke is that the resistance of such a

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transistor is very very very high

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when when no optical bias is applied to it,

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it practically

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does not conduct current at all, and by measuring it with

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just one device it is impossible to understand

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working and non-working. So I turned on the

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house with us and I can show you

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and please you that the

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megaohms are too small for it, that is, it

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has a greater resistance

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but you can’t fool us that easily,

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I decided since I connected it as

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a resistor, why don’t I try to

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control the second device using

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this LED, this is a pair of

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manually, that is, we know very well, we

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remember that some of these testers

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when the LEDs ring these

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LEDs make them glow,

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and since they make them glow, it means that

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this light will probably hit this

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phototransistor and something will happen,

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so let’s take it and, observing the

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polarity,

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carefully connect it where .

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we have a plus, here our LED

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lights up, and where there is no point there is a minus,

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and that is, we ring the diode and at

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the same time we see that the resistance

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of the transistor is under the influence of

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even a small little light that

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appeared from the power supply of the device, the transistor

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opened, that is, everything is fine, this from

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the ax it works with it you can

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experiment you can make a

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tick you can make amplifiers you can

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make all sorts of other nonsense which we will

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definitely do and show you and

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I have already made some of this nonsense and

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follow the links in the description the

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thing works well interesting blinks

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and even amplifies the sound that’s mine

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a little know-how on how, with the help of two

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testers, you can ring

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one small optocoupler, interesting

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during the video and the thermocouple, I never

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called all the guys until the next

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meetings

Description:

Предлагаю способ проверки Оптопары с помощью двух тестеров. Один включаем на измерение сопротивления транзистора оптопары, а вторым подаем питание на ИК светодиод оптопары в режиме прозвонки диодов. Используя эффект свечения светодиодов при прозвонке тестером, можно убедиться , что чуть светящийся светодиод оптопары открывает транзистор до значений фиксируемых прибором. Я не отрицаю существования других более продвинутых, правильных, и надежных методик проверки, но мой способ не так уж и плох ;-) ведь проверить оптопару я все таки смог! Удачи всем! ВНИМАНИЕ ! Вы находитесь на вспомогательном техническом канале , тут отрабатываются разные превью, тексты, названия и слоганы и прочие прибамбасы для основного канала! Прошу учесть, понять и Простить! ;-)

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