Hi Eddietoni
greetings can you share your 12 volt source with mosfet and TL431 what mosfets you used any pics of amp to share
warm regards
andrew lebon
greetings can you share your 12 volt source with mosfet and TL431 what mosfets you used any pics of amp to share
warm regards
andrew lebon
thanks eddietoni i desperately needed a circuit which uses fets for aux drive . does the irfp240 heat like using bjt e.g tip 41 or mje 15032
Hi Edietoni,
thank you for using my schematic, you can use any high voltage N-MOSFET like IRF630,IRFP250,etc.. and it is very cool on 1A little heat on 2A load
Manoj
thank you for using my schematic, you can use any high voltage N-MOSFET like IRF630,IRFP250,etc.. and it is very cool on 1A little heat on 2A load
Manoj
hi manojtm thanks for a wonderful circuit. i once replaced the tip 41 with irf740 fet and it was cool and dropped 2voltages e.g when you want 12volts you needed a 15volts zeener diode . but now thanks for this standard version i will implement it on my aux voltages for class d applications.
triell test 2 r load 1 pair no sink 75-/+ negative side early clips hehehe
triell 3.2k test 100hz sine wave like gun shot LOL 2 r load 75vdc - YouTube
music test
triell3.2k audio test 2r load no sink 1 pair 75+/- - YouTube
http://www.youtube.com/watch?v=-bu4rxsXksA&feature=youtu.be
triell 3.2k test 100hz sine wave like gun shot LOL 2 r load 75vdc - YouTube
music test
triell3.2k audio test 2r load no sink 1 pair 75+/- - YouTube
http://www.youtube.com/watch?v=-bu4rxsXksA&feature=youtu.be
Attachments
how long have you used your schema? is it noise free and cool at +/-85vlts?
Attachments
😱😎wow irvy very impressive are you using irfp250 and ir2110?
after watching the video i am very impressed at +/-75volts no heat sink and 2ohm load pls post schematic.😎😎
litle mistake
Chesta the diode near the bd136 ist be, not ce, look the pcb tanks a lot for you effort in this forum (sorry my spanglis)
Chesta the diode near the bd136 ist be, not ce, look the pcb tanks a lot for you effort in this forum (sorry my spanglis)
1 pair IRFP90N20D
for information this amp is similar to UDC by jetagle with modifacation it has hissing sound even volume is off adding volume on input is not recommended high freq will be gone unless its full gain,, with 2 pairs 90N20 LOL ir2110 temperature raises and not good driver to be stress out and protection is working good but need to be adjust
Sound is fine and clear but compare clarity and details audio ill go for IRS900 hahhaha
For schematic look Chestap Posted
Peace
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Hi stewin,
This design based on a self oscillating type PWM modulator for the lowest component count.This topology is basically 2nd order sigma delta modulation,noise (error in audible freq.) range is shifted away into the upper freq. range
see IRAUDAMP1 rev.A notes
Regards
MANOJ
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http://www.4shared.com/rar/FFE3-yZ4/...DE_3200_W.html
clone corrected 220k no yes 22k capacitor 10n no yes 100n
Back to the basic.
Has anyone seen the performance of this amp with 20Khz input signals ?
its giving me problem when I Use 20Khz as input or mix 20Khz with 1Khz signal. the circuit stops oscillating.
Has anyone seen the performance of this amp with 20Khz input signals ?
its giving me problem when I Use 20Khz as input or mix 20Khz with 1Khz signal. the circuit stops oscillating.