I've made wires to 5200 and 1943 shorter(about 3cm), and VAC on negative rail is dissapear, but on positiv still 80vac
I trying to check it with osciloscope, but found nothing - line is straight as arrow(
Please help me!
Add 100pF base to colector on TIP31/32
Thank you, Sir Mile!!!
I'll try it today.
And I thank you for sharing that great schematic with us!
Sir Mile, thank you again for you advice!
My problem was in crappy multimetr)
When i reverse polarity of probes VAC is gone😕
Then i connect it to my temporary chip amp(TDA9273 with t-form NFB) and it works well. Audible improvment is MUCH less 50Hz noise in speakers compared with unreg psu with two 22000uF.
Next step is 4 channels SR200
My problem was in crappy multimetr)
When i reverse polarity of probes VAC is gone😕
Then i connect it to my temporary chip amp(TDA9273 with t-form NFB) and it works well. Audible improvment is MUCH less 50Hz noise in speakers compared with unreg psu with two 22000uF.
Next step is 4 channels SR200
Sir Mile, thank you, for that reg psu design!
I finish psu for 4 channels. It realy improve dynamics of bass region. Bass became more elastic and punchier.
I finish psu for 4 channels. It realy improve dynamics of bass region. Bass became more elastic and punchier.
hi rohin, i from chennai , if you are making this pcb please add 5 pcb for me too if possible
hi,i will send you pcb file after test you can make it yourself or by local pcb manufacturer.
Hi,
I'm trying to use the same shunt regulator for a citation 12, I'm planning use 2 of them for channel, have you improved with your project? do you think is possible?
thank you
vito
I'm trying to use the same shunt regulator for a citation 12, I'm planning use 2 of them for channel, have you improved with your project? do you think is possible?
thank you
vito
Hi Rohin,
I have tested it on my local pcb(A different pcb modified) I think its error free and working fine...
Hello all!
I finnaly finish 4 chanels of sr100.
It sound well, much better bass and more detailed highs compared with tda's.
On oscilogram present overshot, like I saw in Thimos build. Caps and resistor slightly improve it, but not completely.
Do I need zobel on output?
Here some ampporn:
I finnaly finish 4 chanels of sr100.
It sound well, much better bass and more detailed highs compared with tda's.
On oscilogram present overshot, like I saw in Thimos build. Caps and resistor slightly improve it, but not completely.
Do I need zobel on output?
Here some ampporn:
An unusual shape of sqwave.
What frequency?
Is that bass gain creating the upward slope?
Is there some overshoot?
What load have you attached?
I would (as a general guide) always fit an output Zobel and an L||R, i.e. the full Thiele Network.
What frequency?
Is that bass gain creating the upward slope?
Is there some overshoot?
What load have you attached?
I would (as a general guide) always fit an output Zobel and an L||R, i.e. the full Thiele Network.