Sony ES stelovanje BIAS i BALANCE

[Дане]

Jel moze neko da pomogne?Okacicu ponovo servisno uputstvo, samo da nadjem neki site koji to omogucava....

[Zen Mod]

......Okacicu ponovo servisno uputstvo, samo da nadjem neki site koji to omogucava....

dobio si invite za Dropbox

[Дане]

Hvala Zen.

Evo i servisnog uputstva:

http://dl.dropbox.co...49962/555ES.pdf

ovo je problem:

evo kako taj deo stvarno izgleda

Dakle, kada pipalicama merim napon na mestima za merenje prikazanim u shemi (prva slika), nista se ne desava, instrument pokazuje 0V i ne reaguje na okretanje trimera.

[Ја sam sam]

' си везао једну пипалицу на масу?

[Дане]

Ih bre, kolega ;)P.S. naravno. na sasiju.

[Ја sam sam]

Ih bre, kolega ;)P.S. naravno. na sasiju.

Ма батали шасију, вежи ти на православну масу, тј. на спој два главна електролита напајања.

[Дане]

Vodovi, od tih trimera, vode do IC202 a to je u stvari TL082CP:

DescriptionThese devices are low cost, high speed, dual JFET input operational amplifiers with an internally trimmed input offset voltage (BI-FET II™ technology). They require low supply current yet maintain a large gain bandwidth product and fast slew rate. In addition, well matched high voltage JFET input devices provide very low input bias and offset currents. The TL082 is pin compatible with the standard LM1558 allowing designers to immediately upgrade the overall performance of existing LM1558 and most LM358 designs.These amplifiers may be used in applications such as high speed integrators, fast D/A converters, sample and hold circuits and many other circuits requiring low input offset voltage, low input bias current, high input impedance, high slew rate and wide bandwidth. The devices also exhibit low noise and offset voltage drift.

@StonE_Cold, probao sam - isto je.