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Old 27th November 2010, 07:05 AM   #911
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Quote:
Originally Posted by andrewlebon View Post
hi engel dela pena
greetings mytlo 72 step driver
thanking you
andrew lebon
please show i.c. pin clearer
please clarify tlo72 pin supply.
thanks
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Old 27th November 2010, 07:16 AM   #912
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hi engel dela pena
greetings yes its tested working on real 1000 watt speakers
1 tlo 72 step driver ic gets supply from 15 volt zeners on b500 pcb
2 i use IRF2807 MOSFETS GET WARM MY HEAT SINK IS THICK SO make heat
sink thicker
3 check amp with tlo72 step regulator with 100 WATT BULB IN SERIES
thanking you
andrew lebon
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Old 27th November 2010, 07:58 AM   #913
Mamak is offline Mamak  Malaysia
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Default b500

Quote:
Originally Posted by engel dela pena View Post
thanks guys
the amp is working well
two days of testing no overheating
very good sounding amp
what transformer u use?its hard to find -+90v.what speaker u use?
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Old 27th November 2010, 08:18 AM   #914
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Quote:
Originally Posted by Mamak View Post
what transformer u use?its hard to find -+90v.what speaker u use?
mamak,
b500 supply is 40-0-40ac
torroid,
i bought it from a surplus shop w/o coil,
and recoil it,
only using locally made speaker,but sound is clear amp is clean,many builder already testify
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Old 27th November 2010, 08:24 AM   #915
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Default tlo

Quote:
Originally Posted by andrewlebon View Post
hi engel dela pena
greetings yes its tested working on real 1000 watt speakers
1 tlo 72 step driver ic gets supply from 15 volt zeners on b500 pcb
2 i use IRF2807 MOSFETS GET WARM MY HEAT SINK IS THICK SO make heat
sink thicker
3 check amp with tlo72 step regulator with 100 WATT BULB IN SERIES
thanking you
andrew lebon
andrewlebon
one last thing mate.
w/c of this two is your pin 1?
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File Type: jpg 2.JPG (140.3 KB, 802 views)
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Old 27th November 2010, 08:33 AM   #916
Mamak is offline Mamak  Malaysia
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Quote:
Originally Posted by engel dela pena View Post
mamak,
b500 supply is 40-0-40ac
torroid,
i bought it from a surplus shop w/o coil,
and recoil it,
only using locally made speaker,but sound is clear amp is clean,many builder already testify
i want to try build this amp and want drive pioneer car subwoofer.this amp enough to drive about 400watt amps?and my problem is build car smps.u have any circuit high power smps?
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Old 27th November 2010, 08:41 AM   #917
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mamak,
try this site
diysmps
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Old 27th November 2010, 08:49 AM   #918
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hi engel dela pena
greetings well -15 VOLTS NEGATIVE GOES TO PIN NO
1 PIN NO 8 GETS 15 VOLTS POSITIVE once u use step driver u really feel the power

thanking you
andrew lebon
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Old 27th November 2010, 09:08 AM   #919
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Quote:
Originally Posted by andrewlebon View Post
hi engel dela pena
greetings well -15 VOLTS NEGATIVE GOES TO PIN NO
1 PIN NO 8 GETS 15 VOLTS POSITIVE once u use step driver u really feel the power

thanking you
andrew lebon
thank you mate,
kindly attach here your answer to my previous post 915
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Old 27th November 2010, 09:34 AM   #920
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Location: Serbia
Default TL072 Step

TL072 classH Step Driver: Pcb and Component Layout.
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Last edited by apexaudio; 27th November 2010 at 09:42 AM.
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