Beginner-Friendly Electronic Circuit Layouts: LEDs, Capacitors & Easy Projects for Students

If anyone wants, I can post more articles from Oślej Łączka, because I still have some of them ;)

Added after 3 [minutes]:

Maras3103 if you want to make a simple electronic circuit, I recommend making a simple robot, for example "Waldek Światłolub".

Sory for OT, but I want to know if it is worth buying the first volume of this book.

Here you have a simple circuit simulation program. You can do just such basic layouts in it and check "what happens". Unfortunately you can't set some basic parameters (max capacitor voltage, max diode / transformer amp) but most things are. Come up with a layout, check it on the simulator and then try it in real life (not xD store).

Besides, I also go to 1kl technical school, but for computer science xd.

yyy cant insert a 250-300 kb file. I'll post it on a server soon

http://odsiebie.com/pokaz/4138299---6cd8.html

AVE ...

http://yenka.com/en/Downloads/

It's the same program, only more extensive, free and legal. It even has PIC microcontrollers simulation ...

@U.P. Thanks a lot, this program is 100x better.

+5 points

AVE ...

Trifle. If you ever need something much more advanced, I recommend Proteus ...

Hello and welcome!
My first post on this forum. I decided to put together the flashing LED chip presented in this topic and of course it doesn't work! parts I used:
- 2.2k? resistor
- 1000uF / 10V capacitor
- BC547 transistor
- 9V battery

after connecting everything, the diode burned out - at least that's how I understand it, because first it caught fire, and then it burned less and less until it went out. I replaced the diode and gave it a 220? resistor. Now the LED is on but not flashing. I thought maybe I soldered the transistor upside down, but when the transistor is inverted, the same thing happens. The LED glows barely and does not blink. Anyone have any idea what I could have done wrong?

anesthetized wrote:

Hello and welcome!
My first post on this forum. I decided to put together the flashing LED chip presented in this topic and of course it doesn't work! parts I used:
- 2.2k? resistor
- 1000uF / 10V capacitor
- BC547 transistor
- 9V battery

after connecting everything, the diode burned out - at least that's how I understand it, because first it caught fire, and then it burned less and less until it went out. I replaced the diode and gave it a 220? resistor. Now the LED is on but not flashing. I thought maybe I soldered the transistor upside down, but when the transistor is inverted, the same thing happens. The LED glows barely and does not blink. Anyone have any idea what I could have done wrong?

Make the latter with two LEDs, it will definitely work.

(source: https://www.elektroda.pl/rtvforum/topic1183578.html)

Thanks a lot, but first I would like to understand why the circuit I did not work. Today another three LEDs burned out, I wonder how is it possible since I used a 2.2k? resistor and it seems that a 350? resistor would be enough for 9V?

maybe put it "on a spider" to be sure or check the connections for short circuits etc.

I figured out myself why the system was not working. I soldered everything on a universal board with parallel longitudinal tracks. Of course, I forgot to scrape the copper between the feet of the components so it turned out that the resistor was connected in parallel and not in series.
I corrected this error, but the circuit is still not working, what I noticed is that the diode starts to glow when I touch the base of the transistor with the emitter and if I stretch the protruding resistor foot and touch the emitter with it. The conclusion is that the capacitor does not fulfill its role in the circuit and in fact something may be wrong with it, because when I bring its legs closer together, no spark will jump. Any suggestions?
greetings

Do not play with it with one diode, because I have seen hundreds of posts that it does not work, they had to mess around before they launched it, do it with two diodes, because at least it works right away when done well.

I did and it worked, but only with a 1k resistor and only at 12v at a lower voltage it did not work
proposes to do on pnp and npn transistors (works on a voltage from 1.5v to as much as the transistors will withstand - you only need to change the resistor on the diode)

Piotrek992 wrote:

proposes to do on pnp and npn transistors (works on a voltage from 1.5v to as much as the transistors will withstand - you only need to change the resistor on the diode)

Change how he has it - you forgot about it on the diagram ...
In addition, not from 1.5V because some LEDs are not yet conductive at this charging point.

I was tempted to do Link circuit for BEAMbot Apparently the simplest that can be with a zener diode, two transistors. I used a solar battery from a calculator (gives 1.5V) and a pager motor. I placed the circuit on a universal PCB. Of course it doesn't work I have a few observations, maybe thanks to them you can help me determine the cause.

- When I connect the zener diode with a wire, the motor starts to move for a moment, which proves that the capacitor is charging.

-When I connect a 9V battery to the capacitor feet, the whole circuit works like crazy.

-When I connect a 1.5V battery to the capacitor, the system does not work. It starts working continuously when I shorten the legs of the zener diode for a moment.

do you have any ideas what could be wrong? greetings

You can make a regulated power supply max 20-30v

The diagram is easy to find on the Internet.