SBG-PID

[Andi68]

I am so glad, so glad, i am glad

Thenk you dbanner

[waltr]

Thread back on track and will be watching for more on how this works.
Thanks everyone.

[dbanner]

top layer hidden in order to show layout more clearly.

[dbanner]

Express schematic. Express PCB. That's the name of software. It's free.
Layout has been completed. I will post be posting in few minutes.

[Andi68]

What are you working on to draw the schematic?
I have no experience with these programs

[dbanner]

I do not know where to start.
I have no program, I have to draw the schematic with pen and paper

I have almost finished with the layout. Will be posting it soon.
I guess I will redraw the schematic too. No problem.

[Andi68]

I do not know where to start.
I have no program, I have to draw the schematic with pen and paper

[dbanner]

I do not know what to think about this

This is NEW schematic, never before posted on geotech. Let's build this detector. you can redraw the schematic, I will design a thru-hole layout. We can work together. Sacho will answer all our questions.
His designs are very good.

[Andi68]

I do not know what to think about this

[dbanner]

1n5819. Diod shotki. Low droup-U in-out is 0,2V.This in 1n4007 is 0.7V.

Thanks very much. Schottky diode, yes.
I am going to make this detector to see it's performance.
I will have to make a through-hole PCB layout. I will share my layout when completed.
Sacho, please pay attention to your topic. I will have more questions soon. I need few days to assemble the device.

[kt315]

https://www.geotech1.com/forums/showthread.php?12761-Metal-detector-with-double-tone-and-reject-discriminator

https://www.geotech1.com/forums/showthread.php?13074-Pulse-IB-discriminator-(by-Sasho-Varna)

[scs]

1n5819. Diod shotki. Low droup-U in-out is 0,2V.This in 1n4007 is 0.7V.

[kt315]

Is this a completely new development, how many have this circuit already built?

i did see 'sasho varna discriminator' topic in russian forum and i still remember this schema... just can not find it here in geotech1.

[dbanner]

Received If the speaker field matches the CD4066's strobe.

Thanks for explaining that.
What component is D2. Is it a 1A fuse?

[Andi68]

Is this a completely new development, how many have this circuit already built?