Constructing/assembling an amplifier (Guide for beginners)

[rdpzycho]

http://tangentsoft.net/audio/opamp-bias.html

[BhongTech]

As ive said magdistort din yong sakura for sure kaso kung sa midhigh mo sya ginagamit ang volume level mo nun is lower than  bass amp.

I think distort is not the right word for this but CLIP.

Sir tony is right my amp clips earlier than normal and im sure ganun din yong sakura. The only diffrence is their volume level. My amp clips at high volume because of rail drops due to main line low voltage.

Nasabi ko lang dati na nagdistort yong sakin while ang sakura hindi dahil di ko nakausap yong may-ari in personal, kaya nang nagkausap na kami saka ko naintinfihan ang ibig nyang sabihin.

gets ko na sir
T.Y.

[Skyjham]

ok din po ba ito sa CCS mga master?

[tony]

^ano yan?

[Disabled]

ung 100k bilang CCS.

[jiggins20]

mirror din ba yung ltp na yan?

[tony]

^ah, okey lagyan mo ng base stoppers, 100~470ohms at emitter degeneration resistors, 47~330 ohms to linearise the stage...

[Johannah Aleksandria]

ok din po ba ito sa CCS mga master?

gagana at gagana yan.
problema lang inferior ang design na ganito.
di problema ang ganyang design pag hanggang 40watts lang.

[Mhavskie]

info naman po about dito,, nag ka time kasi akong tumutok kay multaysem na ngalikot lang ako.

[Johannah Aleksandria]

info naman po about dito,, nag ka time kasi akong tumutok kay multaysem na ngalikot lang ako.

Mganda yan sis matutunan.
Malalaman mo pala dyan yung DC offset saka THD.
Meron na rin ako ng software na yan eh, Design Suite 11.0, na-install ko na at gumana na yung Mulitisim at Utiliboard, pero wala pa tlaga akong time tutukan.
Matuto ka ng mag-design nyan sis, gudluck!!

[tony]

simulators does not take into account parasitics due to board layout, lead lenghts.........i do not put too much faith in those....results should be taken with a grain of salt...

[Roland]

sa real world mo makikita ang totoong performance.

[_basura_man()]

simulators does not take into account parasitics due to board layout, lead lenghts.........i do not put too much faith in those....results should be taken with a grain of salt...

this is correct basically yung simulators pang check lang at supporting tools pero kapag ulit-ulit na gagawin kaya tawag ay simulators para less tedius at errors,need mo parin talaga ng manual computation at protype testing.

[Johannah Aleksandria]

Someday simulators will be more realistic.
New versions will always come out and will somehow take into account all that you need.
SPICE is where experts still put their trust.

Tingnan ko tong PowerPro Edition ko kung mganda.

[_basura_man()]

Someday simulators will be more realistic.
New versions will always come out and will somehow take into account all that you need.
SPICE is where experts still put their trust.

Tingnan ko tong PowerPro Edition ko kung mganda.

hindi rin talaga, need pa rin input mo to make it smarter parang program sa computer yan nagiging intelligent dahil sa yo din as designer tool lang talaga ang simulators,pag di mo alam yung gagawin mo walang silbi yung simulators,we've doing simulators here to predict worst case scenarios like monte carlo analysis pero in the end yung basic functions ang gamit na gamit, sa building blocks pa din nanggagaling at syempre sa testing,qualifications at performance wise.

[rdpzycho]

Someday simulators will be more realistic.
New versions will always come out and will somehow take into account all that you need.
SPICE is where experts still put their trust.

they may never be, simulators will be simulators, ideal.

one thing I learned way back in SMPS design, is how to make simulators behave like an actual circuit. that is, include the parasitics. hidden schematic 'ika nga. 'yun 'yung oras na parehas 'yung parasitic oscillation ng Flyback test circuit namin sa simulation at sa oscilloscope.

tedious gawin (lalo na sa pag-charactrize ng ferrite core transformer), pero mas malapit sa actual ang result. minsan dahil din sa parasitics na included, inaabot ng oras ang simulation. minsan pati ang details sa loob ng model ng transistors kailangan ding palitan para i-evaluate ang performance ng parallel connections.

sadly, majority doon sa model modification at characterization nakalimutan ko na dahil 'di ko na masyadong nagagamit. 'yung board at wire parasitics na lang ang nagagamit ko ng madalas.

[danny]

Someday simulators will be more realistic.
New versions will always come out and will somehow take into account all that you need.
SPICE is where experts still put their trust.

Tingnan ko tong PowerPro Edition ko kung mganda.

wrong, always remember, it is only a tool to help you out a bit

actual pa din ang mag tatake place
in the end.
you should try doing it sometime 

[tony]

well the one thing going in favor of simulators is that you don't have to build anything, spend money on parts.......tells you where you stand more or less....

[Johannah Aleksandria]

"Someday"
This is not human life, this is technology. There will always be an advancement. How could it be after 2050?
I think it's wrong to put a period.

Pero syempre sa ngayon, gaya ng sabi ni sir Tony, pwede pa rin mag try sa simulation, walang gastos eh.
For simple circuits it will still be a powerful tool, and to think you know the limitations.

[SexyPaint]

Pa subs....