Delta Pulse - Take 2

[pechkata]

Hi GeoMax
I use the same components as in the schematic R5=2.2k / 1W.
40cm coil =2.7ohm------ 1.2m coil = 1.9ohm

[GeoMax]

Hi,

"Filter 1&2" is already there... The names are only dirrerent in XR71. I think the name is DELAY and REJECT.

[Ali06]

Hello, I have sniffer xr7. Can someone help me to make filter1 and filter2 keys on xr71 model?

[kt315]

I share the link on the archive and you get my email address. somebody evil intruder did harm me and subscribed on VIOLITY spam messages.
LOOK - this is NOT my phone number, i am NOT living in Ukraina. what going with YOU there??? you answer me by mud on my good!

[kt315]

yes, i sort files constantly and put RAR again.

https://drive.google.com/file/d/1P4atLdztmLnGb4zYEgfWnOvloMzEtmPc/view?usp=drive_link

[anas,ru]

reloaded.
just DP files https://drive.google.com/file/d/1EIo...ew?usp=sharing
whole archive https://drive.google.com/file/d/1zyQ...ew?usp=sharing

[anas,ru]

What do your oscilloscope images look like at the output op-amp for each connected coil?

Unfortunately, I don't have an oscilloscope.
I'll try to work on software that uses the computer's microphone input.

[GeoMax]

What do your oscilloscope images look like at the output op-amp for each connected coil?

[anas,ru]

Large coils act as antennas, make sure you are far enough away from the power line to do this test. And as suggested by GEOMAX, check the coil's damping resistor.

Hi Emersonpaz
I had the same problem with Felezjoo Pi..... so I made Delta Pulse2 and I got the same problem.

[anas,ru]

is your country with 50Hz or 60Hz standart in the power lines? with 300Hz you will have in 300/100 = 3 times much consumption of your batt Amper clock value.
while... thinking with atomic batt on isotopics using you can sure increase the freq to 3000-10000Hz.

thanks for reply kt315
The frequency on the power lines is 50 Hz.
My question about the (300Hz) is to ensure my project is operating normally

[anas,ru]

Hi Anas,ru

probably you need to adjust the damping resistor and match it with your bigger coils.

Hi GeoMax
I use the same components as in the schematic R5=2.2k / 1W.
40cm coil =2.7ohm------ 1.2m coil = 1.9ohm

[kt315]

Hello
I've completed the Delta Plus 2 project, but when measuring the frequency between the coil terminals, I get a range of 108 to 139 Hz.
I've seen some posts here talking about 300 Hz.
Another problem: The device is stable on small coils and detects a coin at a distance of 30 cm, with 40cm coil but the large coil is unstable.

is your country with 50Hz or 60Hz standart in the power lines? with 300Hz you will have in 300/100 = 3 times much consumption of your batt Amper clock value.
while... thinking with atomic batt on isotopics using you can sure increase the freq to 3000-10000Hz.

[Emersonpaz]

Large coils act as antennas, make sure you are far enough away from the power line to do this test. And as suggested by GEOMAX, check the coil's damping resistor.

[GeoMax]

Hi Anas,ru

probably you need to adjust the damping resistor and match it with your bigger coils.

[anas,ru]

Hello
I've completed the Delta Plus 2 project, but when measuring the frequency between the coil terminals, I get a range of 108 to 139 Hz.
I've seen some posts here talking about 300 Hz.
Another problem: The device is stable on small coils and detects a coin at a distance of 30 cm, with 40cm coil but the large coil is unstable.