Step driver with TL072 can't be use for 3 step class H driver,
Regards
waso has designed a tl074 3steps class h 😉
http://www.diyaudio.com/forums/solid-state/254656-900w-class-h-power-amplifier-12.html#post4946539
diysmps
Attachments
Exactly,
But tell the procedure to the guys who don't even have an oscilloscope, all they have is a multimeter.
A simple solution:
Feed a 50-100hz sine at input and measure the voltage at output with your DMM and see its more than Low rail voltage and touching the high rail voltage or near to it. Its just an approximation of its working.
Thanks kanwar very useful information right there .

waso has designed a tl074 3steps class h 😉
http://www.diyaudio.com/forums/solid-state/254656-900w-class-h-power-amplifier-12.html#post4946539
diysmps
hi all still continuing with the 2step and 3step pcb but i have the below smd package opamps.
will they work in the step stage with this opamp ic 4550, cct8002 , 4558 😕😕
Attachments
Use the opamp, which was planned by the designer. Slew rate is very important factor in this application.
Sajti
Sajti
Last edited:
hi mr.rizqi
can you tell me, how do you drawing part symbol on top side pcb
look private messege send 😀😀😀
hi Guys,sir apex, working on this apex h900 tef,,,amp section is ok now,,,but have a problem in dc protect even applied with 3vdc in output...over heat protect and fan speed is working...did anyone encounter this problem regarding on the dc protect ckt??can i ask for some test point on this protection circuit that is working already?Thank you!!Regards
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
i have some pieces of IR2117, if any body want to buy so, contact me its cost is INR230.00
contact me gunjaudio@gmail.com
contact me gunjaudio@gmail.com
pregunta
hola grupo soy nuevo y quiero agradecer a todos por aceptarme
estoy armando el amplificador apex h900 pero tengo inconvenientes con el diodo bav 21 ¿puedo remplazarlo por un diodo 1n4936?
hola grupo soy nuevo y quiero agradecer a todos por aceptarme
estoy armando el amplificador apex h900 pero tengo inconvenientes con el diodo bav 21 ¿puedo remplazarlo por un diodo 1n4936?
Attachments
-
IMG-20171003-WA0027.jpg77.2 KB · Views: 171
-
IMG-20171003-WA0026.jpg66.1 KB · Views: 156
-
IMG-20171003-WA0025.jpg68.1 KB · Views: 215
-
IMG-20171003-WA0024.jpg93.7 KB · Views: 200
-
IMG-20171003-WA0023.jpg84.3 KB · Views: 817
-
IMG-20171003-WA0022.jpg81.5 KB · Views: 838
-
IMG-20171003-WA0021.jpg87.6 KB · Views: 854
-
IMG-20171003-WA0020.jpg78.8 KB · Views: 889
-
IMG-20171003-WA0019.jpg71 KB · Views: 978
-
IMG-20171003-WA0028.jpg96.8 KB · Views: 206
- Home
- Amplifiers
- Solid State
- 900W H-class PA Amp with Limiter