pcb-lorens-5

[nikodimych]

correctly CA3140. TL061 does not work in this scheme

[ashkelon]

thanks #nikodimych
061 is little working but circuit is feeding very fast channel A

Whats the other opamp name for channel A?

[eclipse]

Use generic JFET op amp like TL062/TL072

[kadir6141]

hello lorenz I did pulse 5 and run it. There is a problem with the commutator connections. The low battery led lights up continuously.
https://www.youtube.com/watch?v=t4Nfi9Tt-nM
I am used me60 have schema

[kadir6141]

[ATTACH] 54373 [/ ATTACH]
bağlantı nasıl olacak. bana yardım eder misiniz.

[kadir6141]

Are you know connection ? Can you help me

[YIVANKA]

8 mb RAR http://depositfiles.com/files/gbyc19kc9

sorry，the link is dead.

[MDfanatic]

sorry，the link is dead.

Link works OK.

[kadir6141]

Mdfanatik,Yıvanka thank you very much.
But js2 I am donete know.working but js2 note connect

[kadir6141]

the detector works fine. There is a problem with the main pot and switch connections. Can you help with the links

[ZOUjiarui]

https://www.metaldetectors.de/uk/products_lp5.htm
Excellent detector, I found on the official website that it can automatically match the coil, very few machines have this function.

[eclipse]

There is no such feature in this device. Don't be fooled by marketing tricks.

[eclipse]

The coil connector is a bit different on small coils not an automatic feature or something really smart going on in the circuit except for reducing the delay.

[nikodimych]

Mono coil 25cm stranded wire cross section 0.22mm (14 cores with a diameter of 0.14mm)
resistance 1.2 ohm 23 turns

[nikodimych]

45 cm monocool with a stranded wire with a cross section of 0.22 mm (14 cores with a diameter of 0.14 mm)
16 revolutions