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Old 26th November 2010, 05:13 PM   #891
sekhar is offline sekhar  India
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hey aman whr do u get ur toriadal tf made ................


regards
sekhar
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Old 26th November 2010, 11:47 PM   #892
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apex,
irvynejay,
a closer look at the schematic
i.c. pin 1 goes to bf 422.So neg supply must be pin 4 where signed as +15.
somebody must check my observation
pin 7 goes to 423,pin 8 must be positive where signed as -15
TLO72
pin 4 neg supply
pin8 pos supply
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Old 26th November 2010, 11:52 PM   #893
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Default ?

?
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Last edited by engel dela pena; 26th November 2010 at 11:57 PM.
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Old 26th November 2010, 11:59 PM   #894
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andrewlebon,
you already built this step don't you?
how is it?
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Old 27th November 2010, 12:20 AM   #895
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hi engel dela pena
greetings yes it is working fine only use last schematic of tlo72 step driver the 10uf and 10 volt zener wrong orientation corrected driver
stage from diysmps 1200 watt works fine 10 output pairs used it good if
IR2117 NOT AVAILABLE but i think coolets pcb is best if u use tlo 72 step driver
no wiring more compact will try coolets pcb in a few days and post pictures
weather here really cold use IRF2807 instead of IRF540
THANKING YOU
andrew lebon
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Old 27th November 2010, 12:23 AM   #896
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Quote:
Originally Posted by andrewlebon View Post
hi engel dela pena
greetings yes it is working fine only use last schematic of tlo72 step driver the 10uf and 10 volt zener wrong orientation corrected driver
stage from diysmps 1200 watt works fine 10 output pairs used it good if
IR2117 NOT AVAILABLE but i think coolets pcb is best if u use tlo 72 step driver
no wiring more compact will try coolets pcb in a few days and post pictures
weather here really cold use IRF2807 instead of IRF540
THANKING YOU
andrew lebon
@andrew

diysmps 1200 have fault on placement of parts or just ok. hows the amp did it sounded good?
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Old 27th November 2010, 12:42 AM   #897
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hi rhodrich
greetings no it is correct came on first time sound very nice mids
silky highs i use it for mid tops for more base use 10uf as told by erhan
thanking you
andrew lebon
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Old 27th November 2010, 12:47 AM   #898
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@andrew

how u adjust the bias? it 10uf ceramic or mylar? i would like to try that one coz going to try with higher voltage.
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Old 27th November 2010, 12:52 AM   #899
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Quote:
Originally Posted by andrewlebon View Post
hi rhodrich
greetings no it is correct came on first time sound very nice mids
silky highs i use it for mid tops for more base use 10uf as told by erhan
thanking you
andrew lebon
Andrewlebon pls check your in-box im still waiting for you reply ty
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Old 27th November 2010, 12:54 AM   #900
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hi rhodrich
greetings just keep preset in middle ehran says 10uf ioo volts NP
even the maxter looks promising havent tried it WILL try it soon
thanking you
andrew lebon
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