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900W H-class PA Amp with Limiter
900W H-class PA Amp with Limiter
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Old 23rd February 2019, 02:51 AM   #3691
ialvega is offline ialvega  Venezuela
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hello how are you, can you please give me the pcb of the h900 that you did, thanks my email iavg1976@hotmail.com I thank you
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Old 24th February 2019, 04:47 PM   #3692
neojie is offline neojie  Iraq
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Quote:
Originally Posted by apexaudio View Post
Nice work, I like your idea to use car fuses,
Regards
Thank you Sir.

I found some discrepancies on my schematic/layout and I'm rectifying it.
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Old 24th February 2019, 04:48 PM   #3693
neojie is offline neojie  Iraq
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APEX TD1800
Wow another ONE! This well make me busy again. Thank you Sir Mile.
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Old 24th February 2019, 05:36 PM   #3694
dorel is offline dorel
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Mackie SWA1801?(TD part).

Last edited by dorel; 24th February 2019 at 05:48 PM.
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Old 24th February 2019, 07:36 PM   #3695
apexaudio is offline apexaudio  Serbia
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Quote:
Originally Posted by dorel View Post
Mackie SWA1801?(TD part).
TD1800 use HCPL3120 igbt mosfet gate driver.
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Old 24th February 2019, 07:44 PM   #3696
neojie is offline neojie  Iraq
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Originally Posted by apexaudio View Post
TD1800 use HCPL3120 igbt mosfet gate driver.
Hello Sir Mile,

Can I use HCPL-3130 instead of 3120 & IRFP4110 in IRFP250N?

Kind regards.
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Old 24th February 2019, 10:40 PM   #3697
moore4889 is offline moore4889  Philippines
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Quote:
Originally Posted by apexaudio View Post
TD1800 use HCPL3120 igbt mosfet gate driver.
hi sir mile..was the schem tested?this is another great project to build..thank you sir..
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Old 25th February 2019, 06:14 AM   #3698
apexaudio is offline apexaudio  Serbia
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Quote:
Originally Posted by neojie View Post
Hello Sir Mile,

Can I use HCPL-3130 instead of 3120 & IRFP4110 in IRFP250N?

Kind regards.
HCPL3130 can be use but you must use 200V mosfets.
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File Type: jpg apex td1800.jpg (729.0 KB, 135 views)
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Old 25th February 2019, 11:12 AM   #3699
NMOS is offline NMOS  Germany
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Quote:
Originally Posted by apexaudio View Post
HCPL3130 can be use but you must use 200V mosfets.

Dear Sir,

is circuit description available ?

1...only 5 (10) Toshiba 2 Sc 5200 / 2 SA 1943 Output devices Rail 140 V +/- ?

.. 140 V rail with Toshiba 2 Sc 5200 / 2 SA 1943

how can this amp work stable if Vceo max. 230 V for this ttransistors ?

Vceo is 230 V for this transistors, rail should be max 115 V


How is it possibile this amp can work stable and not violate SOA from output devices and not get second breakdown?


sorry, for this question, but long time before have import from China 50 pcs. PA Amp with similar rail +/- 145 V

60% amplifier fail within few weeks after sold. second breakdown
Toshiba 2 Sc 5200 / 2 SA 1943
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Old 25th February 2019, 11:25 AM   #3700
NMOS is offline NMOS  Germany
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I see 2 Rail

18V

and 140V

Is is correct to say.... in standby mode amp running with separate 18 V Rail protect with MUR 420 from High Voltage Rail ?

if outpower required HCPL Mosfet driver add Voltage after MUR 420 ?

Is it corrcet, .....this amp need only 1 big Rail to work ,

the 18V standby Rail can be small PSU


In this case 18V standby rail,...the amp have very high efficiency

but can this design work stable with only 5 output devices and drive big 18 inch subwoofer @ 140 V rail ?

I remeber, old classic class AB have already 5 output devices for 400 W RMS @ 4 Ohm 80V Rail and 50 % energy convert to heat


sorry my english not so good
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