DC Servo MOSFET Amplifier

[apexaudio]

Fan can be activated with this circuit if there is signal present on amp outputs.

 

[QQ12e5k1]

1 Replace 1,5k/5w with 330R/2W for relay
2 Replace 0,1R/5W with 0,22R/5W for short-circuit detect
3 Replace 220k with 47k for DC detect
Rest will work with 35V DC, 6k8/1W for LED can be replaced with 3k9, but not necessary.
Regards

Is this same if I use 32 VAC or 28VAC???

Regards

 

[QQ12e5k1]

For class H step driver fets is better use IRFP140/IRFP9140. This step driver can be add on amplifiers with BJT outputs also.

can I use that step driver for AX-14???or B500??

Regards

 

[apexaudio]

Is this same if I use 32 VAC or 28VAC???

Regards

Yes...

 

[apexaudio]

can I use that step driver for AX-14???or B500??

Regards

Yes, but you must use 4 pairs of mosfets for 4 pair of outputs transistors.
Regards

 

[QQ12e5k1]

Yes, but you must use 4 pairs of mosfets for 4 pair of outputs transistors.
Regards

Thank you Sir.........

How about this step driver???can I use for B500???

Regards

 

[RSK]

PSU+Protect Schematics

Hi Miles,
I want to use the PSU+Protect+clip.
Please show, for different voltages, which resistor and how to calculate?
That is for various voltages.

Thank you

 

[nikolayms]

Hi Apex!I use a similar topology.The soundis very nice.But about you ramp, I learned only today. Ishowed your diagram.Why do you use IS servos, alongwith a capacitor C6. C6 is not required if there is a servo. Or the servo is not necessary,if there is a C6?

 

[AndrewT]

C6 is RF attenuator.

 

[nikolayms]

C6 in the picture that I showed RF attenuator. I asked about the C6 in the scheme of the author of this topic.

 

[apexaudio]

F100 by 'nikko'

 

[apexaudio]

F100

 

[rizqi]

Apex pls check.

how abaout its mr Mile?...

 

[rizqi]

Redesign from PA HH profesional HH.Vx series

Hi Sir Mile,... How about this SERVO? this like F100 Design,... my design not Finish Yet, are this work?...

 

[apexaudio]

Hi Sir Mile,... How about this SERVO? this like F100 Design,... my design not Finish Yet, are this work?...

Schematic from post #18?

 

[rizqi]

Abaut HH like F100

yes sir? (M900) .. and I drew back from HH vx450/650 with version 4set sk135 mosfet. I have burned on botom pcb of HH vx900. and I plan on turning it on again. I seem to see any similarities in the scheme of Hitachi F100. if the path is correct pcb, I will soon be printed along with the F100 MK2.
regards..

 

[rizqi]

@Mr. Mile
Please give me your schema of H100
Thanks

 

[apexaudio]

@Mr. Mile
Please give me your schema of H100
Thanks

Shema is in post #56

 

[rizqi]

Part List H100

Shema is in post #56

any part?...

 

[apexaudio]

any part?...

Parts without notification is same as F100.