Delta Pulse

[jeep6789]

Can anyone provide a very sensitive voltage-frequency conversion circuit? Higher accuracy than 555

[kt315]

good video and right test on kaska WWII https://www.youtube.com/watch?v=GbI7GBm5-L4

[kt315]

thank you for attention to my layout. yes, its best, no doubts. i suggest you to do turkish layout that onesided and free.
russians do turkish and sell.
in price of my board is laid my constant consultation. sometimes it's at huge nerves wasted, as with the pakistani. that part, consultations,
is unfortunately invisible for outsiders but really engages 80% of the price.

pleasure
Anatloy

[HAPPY]

Hi guys，anyone have this pcb file，lay and BOM？Thank you very much！

[ypartal]

What setup did you have for testing ?

So it's very easy. If you have got oscilloscope and power supply.
My test configuration is like attached picture.
Regards.

[6666]

Today I found old stock lf357 at local dealer in my city.
So I'm happy.
I did slew rate test it with my scope and results are :
60V/uS (H to L)
88V/uS (L to H) so perfect results.
My fake opamps slew rates are 8-12V/uS.
After I will share detector sensitivity with orginal and fake opamp.

What setup did you have for testing ?

[ypartal]

Today I found old stock lf357 at local dealer in my city.
So I'm happy.
I did slew rate test it with my scope and results are :
60V/uS (H to L)
88V/uS (L to H) so perfect results.
My fake opamps slew rates are 8-12V/uS.
After I will share detector sensitivity with orginal and fake opamp.

[kt315]

buy old LF356 and compare your 357's with it. there is not a way to check and to answer you sure right.
what chineses put in the IC housing is unknown. take old TL081 from trash boards and compare. TL081
has to work good.

https://www.ebay.com/itm/TDB0156DP-L...gAAOSwcLxYKeFw

[ypartal]

Hi frends.

My corona project finished but tests ongoing not on site (inside home).
I'm using test coil diameter 11cm and 450uH. Freq=300hz.
I have got two pcs LF357 but different brand.
I was attached T1 (output of LF357) signal.
Anybody can explain to me which one is correct and other fake opamp?
Thanks.

[kt315]

1. i double all tracks on both sides. this way raises reliability of pards, not so much but does.
2. it gives better view checking of the tracks. you SEE the connections by eyes.
3. nobody does the duplication because thinking that is a redundancy. 1 oz is thin copper layer.
4. i have probably to add viases on sockets pads - some people break metalization of the holes resoldering sockets (freaks).

[ypartal]

Board quality is perfect. Thanks Anatoli
First one I will use with small coil and setting to 300Hz. After I will add switch for big and small coil selection.

When I was changed C1=10n, R1=180K frekans has been 500-600Hz.
So, I did R1=270K and C1=15n. Now working between 250-350Hz.
Because our astable oscillator working with 1N4148.
Frekans calculation..... f=1/0.7x(R1+R2)xC1
just info.
Ref.Below link.

https://electronicsclub.info/555astable.htm

[kt315]

covid project LOL! fine... just last step... you can connect a coil and tune 100Hz, or 120, depending on your country 50 or 60Hz.

[ypartal]

My covid days DP/XR-71 project %90 finished

[Sinaparsaeei]

Delta Pulse Files Collection

Merhaba, ben indirdim, l?tfen gerber dosyalarını da koyun. ?ok teşekk?r ederim
Hi, I downloaded this, please put the gerber files as well. thanks a lot

[RS_Phil]

[QUOTE = RS_Phil; 222995] New mode of Delta Pulse [/ QUOTE]


Thank you kt315

What is the schematics diagram?

It is moded of old Delta Pulse if you have not made Delta Pulse try the original version either Turkish or from master KT315 version, it works the same what I like
of Kt315 version is the fewer POTS will be used. hoping to build it soon when I found the the file.