schematic question

[gost373]

Bonjour,


sur les sch?mas que j'ai joint, o? j'ai cercl? de rouge, j'aimerais savoir o? est la branche ? le (V-) au moins de la batterie ? et concernant le C22 je voudrais savoir s'il n'est pas polaris? ? l'envers ? et si vous avez le temps dites moi si les sch?mas joints n'ont pas d'erreurs. Merci ..

oups sch?mas joints

[Carl-NC]

Please post in English, thanks.

VT6 & VT7 form a charge pump that creates roughly -8V at "V-". Therefore C22 is correctly polarized and R45 is connected to +8V at the top and -8V at the bottom. Everything looks fine.

[Op04]

Hello gost373,

Translated by Google:
on the diagrams I have attached, where? I have circled of red, I would like to know where? is the branch? the (V-) at least of the battery?
the (V-) at least of the battery?
le (V-) au moins de la batterie ?
the (V-) of the battery at least?
le (V-) de la batterie au moins ?
and concerning the C22 I would like to know if it is not polaris? ? upside down? and if you have time tell me if the attached diagrams have no errors. Thank you ..

On the threshold with red circle V- that connect to your circled near 1N4148. The C22 is correct, since the negative capacitor pin goes to V- so the ground is more positive than V- you must learn this kind power supply. There's a lot more complicated than this
add line. While I'm writing Sir Carl just answer your question.hehe

[gost373]

Thank you for your answer, and my apologies for the translation! I have a stupid question the (V-) are connected on which components? and the ( V- ) are generated by which component?

[Op04]

We all learning here, so don’t worry....regards

[Altra]

Not on the schematic. All the op-amps and comparators should be connected to V+ = pin 8 and V-= pin 4 --- LM358, LM393, LF353. On LM308 V- = pin4 and V+ = pin6