That's exactly what I did from the beginning, but it turned out more convenient to have amplifiers and protection on separate boards. Mainly because he forgot to place the triac protection, and management of air had somewhere to go, and it will control a single fan on the heated channel.
Understood Your idea, but I want to do it in different way: Put together everything, which are important for the sound, but not make worse sound:
Main pcb:
- input stage
-power amplifier
-protection relay+relay drivers+protection
-clip detector+limiter
Psu pcb:
- rectifier
- capacitors
- fan driver
- connectors (cabling between Main pcb and Display pcb)
Display pcb:
- LEDs+drivers
- inrush current limiter
I found this solution as a best to eliminate the spaghetti like cabling.
Sajti
quick consult
hi all!.. Let me introduce to you; I am a new member in this wonderful forum. I am from Venezuela. I reply this thread because I will soon build my first Class H amplifier based on the RMX2450 of QSC. I congratulate the russian boy who created this thread; Good job!.. I hope you help me if required. I think it is not easy to build this kind of amplifier.. God bless you
hi all!.. Let me introduce to you; I am a new member in this wonderful forum. I am from Venezuela. I reply this thread because I will soon build my first Class H amplifier based on the RMX2450 of QSC. I congratulate the russian boy who created this thread; Good job!.. I hope you help me if required. I think it is not easy to build this kind of amplifier.. God bless you
hi all , any body home ??? mr waso how is your project going on ?? did you manage to make the three step version??
why is it unusable sir ?? i wanted to try class h 3steps and i wanted to use es1d , lm 311, irfz44 , (4pairs) c3856 , a1492 , mur860 , voltage to be used dc +135 , +90 , +45 0 -45 , -90 , -135 dc i wanted to use 2ohms and 4ohms loads😕😕
It's have no prototype, but the scheme is available, it is theoretically possible. About 2kW is possible.
o.k then can i use irfz44 and (4pairs) c3856 , a1492 instead of c5200,a1943??
but my voltage to be dc +135 , +90 , +45 0 -45 , -90 , -135 dc , by the way i wanted a 3step in order to use a smaller heatsink
hi waso .! i have failed to register in the russian vegelab forum .
i wanted to use irfz44 or irf1010 n channel mosfets only without complimentary . will this circuit work the one you posted using 3 steps using only tlo84??
i wanted to use irfz44 or irf1010 n channel mosfets only without complimentary . will this circuit work the one you posted using 3 steps using only tlo84??
Attachments
TL084 is not a best variant. More better-LM339 with minor corrections.
For your power voltage - yes.
Well dear....google is your friend:
Audio Amplifier Classes (A, A/B, D, G, and H): What are the Differences? | Audioholics
Audio Amplifier Classes (A, A/B, D, G, and H): What are the Differences? | Audioholics
Yeah, ive read that in mean time, no worries. I was just surprised I didn't know what they were and that they were a thing.
Oh deer.
can replace lm339 directly without any modifications . on 3tier class h +/-45,90,135 in the above schematic ??
Attachments
Last edited: