I agree. The original current dumping concept from QUAD includes a very smart feedback network that changes it's feedback factor depending on whether the dumpers are on or not. It's a bridge type circuit with two arms formed by an inductor and a cap that have precise values.
There are many amps that have an unbiased output stage and a fast class A driver that that are also called current dumping amps. While as far as the English language is concerned they may be regarded as 'dumping current' they are NOT the same as the QUAD cd amplifiers.
Whether that is important to you is your call, of course.
Jan
Sorry for the late response, but I've been out of the hobby for some time and am unable to spend any time on it for now. I just saw the posting now, just stopping by.
I am using Eagle for pcb design, along with sketchup for 3D visuals and eventually move this into solidworks for full mechanical design integration.
Also using LTSpice along the way.
PCB BX100
Hello DIYers
I am a just beginner in layout drawing, I try to draw the layout of Apex BX100 attach below, but can't avoid some jumpers, How to drew layout with a minimum jumper in single layer PCB.And can anybody give me some advice in PCB design with good component placement.All suggestions welcome.
Hello DIYers
I am a just beginner in layout drawing, I try to draw the layout of Apex BX100 attach below, but can't avoid some jumpers, How to drew layout with a minimum jumper in single layer PCB.And can anybody give me some advice in PCB design with good component placement.All suggestions welcome.
Attachments
My first advice is that the power supply three wire connection should arrive at the amp PCB as a closely spaced three terminal connection that are VERY close together.
The three traces carrying power currents to the output transistors should be kept close together to minimise the interference they will emit.
If you try to implement that you will find your PCB looks completely different from your first proposal.
You will find that 90% of the PCBs on this Forum do not meet that requirement.
You have a choice, do as nearly every other Member does and accept the emi created, or try to do it right.
Now choose.
The three traces carrying power currents to the output transistors should be kept close together to minimise the interference they will emit.
If you try to implement that you will find your PCB looks completely different from your first proposal.
You will find that 90% of the PCBs on this Forum do not meet that requirement.
You have a choice, do as nearly every other Member does and accept the emi created, or try to do it right.
Now choose.
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.