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Topic: simple circuit reverse engineering (Read 1 time) previous topic - next topic



cloxart


ted


cloxart

Oh yes! lol
still dont know what the red/white wire is for, for instance.
in the simulator i put a generic op amp (the only choice I have) but the AD706 in my circuit is a DUAL op amp so I guess it must be powered with a dual voltage.... and not as I did

ted


cloxart

opps, sorry I meant BIPOLAR
http://www.analog.com/media/en/technical-documentation/data-sheets/AD706.pdf

ted

Op amp can work in two modes or single mode of power supply.
google - dual supply op amp circuit and single supply

cloxart

#23
May 19, 2018, 08:49 pm Last Edit: May 19, 2018, 08:51 pm by cloxart
here is the schematics i was able to make

ted

post # 1 top drawing, which wire is red and which white ?

cloxart

from top to bottom:

left side:

yellow
white/red
green
red

on the right side:
black

cloxart


ted

From top
IN - to control laser beam
OUT - signal from photodiode
+ voltage supply
- voltage supply
Black
control bias op amp
The circuit is using only one op amp.
Double check your drawing - op amp is in strange configuration


cloxart

great! but red wire is going straight into pin8 (v+) of the ic?? and green into pin1 (v-)... is there something i dont get? obviously there is :(

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