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I translate the text on the circuit.I cann't find the opamp K544ÓÄ2À and diode kd213a in my books,well on the internet but not a comparable
type of this one. Somebody help me ??
type of this one. Somebody help me ??
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Re: PI project
For diode KD213A you can try with normal 1N4148,for O.P. i dont know. -
Re: PI project
Opamp is LF357 analog.Comment
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Re: PI project
KD213's are much powerfull diodes for the circuit and low current 1N4148's are best.
you can find out a full analog list here http://metaldetector.bratsk-city.ru/spravka/Analog.pdf
yours
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Re: PI project
Somebody knows the purpose of S1!!!Comment
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Re: PI project
there is a some necessity to tune a level as temperature drift existing, that slightly may be changed. so or the circuit automatically tunes the level, but a sensitiveness will low, or we get a maximum sensitiveness with a manual tune sometimes. you can also change R 5 MOhm choicing a degree of the feedback.
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