@Choco
My SMPS in idle is +-45VDC, with 10A resistive load it drops to +-38VDC.
I think its going to be good!
SMPS is just missing the final touches!
My SMPS in idle is +-45VDC, with 10A resistive load it drops to +-38VDC.
I think its going to be good!
SMPS is just missing the final touches!
Attachments
Last edited:
Indeed a nice looking SMPS.
But take care. +/-45V is already critical in an unregulated SMPS.
Already +10% of change of your AC mains will bring the supply to the absolute max rating.
Second I assume the smps can only source but not sink, so you have to expect buspumping. The attached SIM shows the effect and the supply goes to roughly 107V from pos rail to neg rail. Defect likely.
Feel free to investigate with values that fit your SMPS.
But take care. +/-45V is already critical in an unregulated SMPS.
Already +10% of change of your AC mains will bring the supply to the absolute max rating.
Second I assume the smps can only source but not sink, so you have to expect buspumping. The attached SIM shows the effect and the supply goes to roughly 107V from pos rail to neg rail. Defect likely.
Feel free to investigate with values that fit your SMPS.
I am planing to make a Synchronous rectified version of the SMPS (Unregulated also). The design is ready to be on PCB later 😉
At the start of the thread it was mentioned that the gain of the amplifier without the gain board would be about 5.
Am I right in thinking that approx 7V is needed from a preamp for full power without fitting the gain board?
Am I right in thinking that approx 7V is needed from a preamp for full power without fitting the gain board?
Yes, depending on your supply voltage you will need something between 6Vp...8Vp to reach clipping. Please also refer to posting #312.
My question focuses on the timing behind the gates signals, independent of gdts or semiconductor bridge drivers.Your link to diysmps homepage is not really helpful to me.
Guys this is not your thread it Is ChocoHolic's and it is about the System D Liteamp.
Any discussion or disagreement over SMPS design should be on another thread in the Power supplies section.
Be nice to each other.
Any discussion or disagreement over SMPS design should be on another thread in the Power supplies section.
Be nice to each other.
ChocoHolic, Toni, having looked at my ideas bridge at 35-0-35 may be better than a single amp at 50-0-50. Are there any problems to be aware of?
I realise that 4R is the lowest load but what other things should I be aware of?
I realise that 4R is the lowest load but what other things should I be aware of?
I'm running my 4 Channel LiteAmp bridged without any problems at 2x37V rails. Running the amplifier modules in bridged mode avoids the bus bumping problem.
Despite of the tuning procedure to get lowest noise and distortions the amps are running very fine and without any problems even with high load ~ 180W@8R
BR, Toni
A bridge driving circuit was posted here http://www.diyaudio.com/forums/showthread.php?t=248447 towards the end of the thread. or there are a few circuits on Rod Elliott's site. Here is one http://sound.westhost.com/project14.htm
Last edited: