Polish Pi

[etznab]

[ATTACH]54603[/ATTACH]
[ATTACH]54603[/ATTACH] Green [ATTACH]54603[/ATTACH] Pin 10 4011
Yellow pin 5

Hi.

Im have a same scope hantek 6022BE. I have not put my probe at the output of the irf630 because it may be more than 400v, and I am afraid of burning my scope. Test leads are up to 10x. Have you put the tip on that exit? before the zener diode?. Is it safe to do it?. Thanks

[etznab]

What values can be used for R1?
I made the changes you said and it works very well ..
I would like to try the exchange of R-1 to have a further improvement. Another problem I am having is instability. the tec .tec noise. tec. gradually gets accelerated. Someone has already managed to solve this problem.

Have you managed to solve the problem of gradual acceleration? Is it instability? The same thing happens to me, it accelerates little by little "the tec tec tec...".
Tell us how to solve it. Thank you

[Emersonpaz]

I made the project VCO from mickstv I'm using it on the Polish pi https://youtu.be/RDV93ZdeGhk

[dik]

because the Polish PI changes its oxylator or pulse rate over time, having to keep adjusting it all the time. It could be the quality of the parts or some assembly error

[Emersonpaz]

https://youtu.be/1c2JO8Wyc5U

[pustareka]

[sbalio1]

This is the circuit diagram. You need to add a capacitor of 10uf .pin 1-8 lm386.

https://www.geotech1.com/forums/show...&highlight=Vco

[ZOUjiarui]

Hi Zoujiarui,

can you upload a circuit diagram for the PCB you posted in post #259 as well?

thanks.

I don't have the circuit diagram of this PCB, this diagram is the only information.

[GeoMax]

Hi Zoujiarui,

can you upload a circuit diagram for the PCB you posted in post #259 as well?

thanks.

[ZOUjiarui]

I didn't. I had a little PCB that was added to the original polones. There were a lot of videos, and they deleted it.

[bernte_one]

This circuit is the simplest and most powerful, and it is the commercial pi in China.

do you have the pcb layout file?

[ZOUjiarui]

I forgot. I don't know if it's useful, but the only useful information is this picture.

[Anoersakho]

[ATTACH]56853[/ATTACH]

where you see this project

[Anoersakho]

where you see this project???

[ZOUjiarui]