Awh, damn it, I'm late! I guess this board would be able to put 100mA per channel into 17 volt easily :\
Hi Per-Anders and All,
I seek your technical guidance with regards to my SSR03 5V ps.
I have put together dual +5V rails output and facing technical difficulties, on the positive rail I have it measured precisely +5.04VDC while on the negative rail it is measured 3.54VDC. Basically I image the negative from positives rail. I think the VR2 might be misplaced and also uncertain the right polarity of IC2 for LM317 and Q4 for D44H11?
Grateful if PA or any one would kindly shed some lights! Pretty please.
Many thanks,
Chanh
I seek your technical guidance with regards to my SSR03 5V ps.
I have put together dual +5V rails output and facing technical difficulties, on the positive rail I have it measured precisely +5.04VDC while on the negative rail it is measured 3.54VDC. Basically I image the negative from positives rail. I think the VR2 might be misplaced and also uncertain the right polarity of IC2 for LM317 and Q4 for D44H11?
Grateful if PA or any one would kindly shed some lights! Pretty please.
Many thanks,
Chanh
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
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Have you noticed the different pinning of the LM317 vs 337? The LM431 shall have the pin 2 and 3 swapped. Notice also that the voltage setting resistors. The supply pins of the opamp must be swapped also, pin 4 and 7. The LED, different orientation.
Hi PA,
I did precisely that! LM431 has pin2 and pin 3 swapped. Similarly LM317 pin2 and pin3 swapped in the absence of LM337. OPAmp pin4 and pin7 were also swapped. All LED, Caps are installed with supposedly correct polarity. All tansitors were also replaced mirror to positve rail, in that I meant BC556 were replaced BC546 and vi versa. All pins on BC556/546 were kept the same.
Is there any pin change for Q4 when D44H11 was replaced the D45H11? I kept same orientation.
I measured voltages at D12/D10 in reference to ground showed D10=1.47Vdc and D12=0.97Vdc. While D9/D11 are consistently at 2.54Vdc. There is no voltage across R22 but on R21 showed 0.29Vdc. Also, when pulled off the power, working +ve rail LED is switching off first than after 5seconds later the fault reading rail is starting to witch off.
Many thanks,
Chanh
I did precisely that! LM431 has pin2 and pin 3 swapped. Similarly LM317 pin2 and pin3 swapped in the absence of LM337. OPAmp pin4 and pin7 were also swapped. All LED, Caps are installed with supposedly correct polarity. All tansitors were also replaced mirror to positve rail, in that I meant BC556 were replaced BC546 and vi versa. All pins on BC556/546 were kept the same.
Is there any pin change for Q4 when D44H11 was replaced the D45H11? I kept same orientation.
I measured voltages at D12/D10 in reference to ground showed D10=1.47Vdc and D12=0.97Vdc. While D9/D11 are consistently at 2.54Vdc. There is no voltage across R22 but on R21 showed 0.29Vdc. Also, when pulled off the power, working +ve rail LED is switching off first than after 5seconds later the fault reading rail is starting to witch off.
Many thanks,
Chanh
Keep a close look at the schematics and the assembly drawing when you checking this.
Are the pictures showing the status? I see mounting errors in them.
Since you have a working 5 volt side you can compare and where the problem starts.
All caps and the LED's turned around?
All transistors changed?
Pin 4 N2 goes to ground?, pin 7 to supply?
Voltage reference has the A and C swapped?
LM317 has pins in their right holes?
Are the pictures showing the status? I see mounting errors in them.
Since you have a working 5 volt side you can compare and where the problem starts.
All caps and the LED's turned around?
All transistors changed?
Pin 4 N2 goes to ground?, pin 7 to supply?
Voltage reference has the A and C swapped?
LM317 has pins in their right holes?
Has anyone made a mod to this board to output +5v and +3.3v ? So that it can power the bbb/raspberry and s03 isolator.
So for bbb 5v, s03 3.3v + 5v, dddac 12v i would need 4x ssr01? If 3.3v is doable?
Is this board better than 4.17uV Ultralow noise DAC power supply regulator 3.3V/5V 1Ax2 - DIYINHK or this one DDDAC Power Supply 5 / 12 Volt - Audio Creative Shop ?
Tnx for the help!
Is this board better than 4.17uV Ultralow noise DAC power supply regulator 3.3V/5V 1Ax2 - DIYINHK or this one DDDAC Power Supply 5 / 12 Volt - Audio Creative Shop ?
Tnx for the help!
I have damaged one BBB via Doede's 5V PS. Have got the Diyinhk version here too, I will try tomorrow and advise. Definitely this SSR03 will not work.
It's the power management chip within BBB. Too lengthy for a page essay, but said on its manual. Unless you can advise us how to make it works? 🙂
Hello chanh
i stumbled in this thread because i'm finally about to build the unit for my QSXM2 riaa preamp (it's working fine on batteries).
D7 and D8 seem to be reversed in your photos.
Probably i'm blind or just i have to read deeper in the manual.
Cheers
Paolo
i stumbled in this thread because i'm finally about to build the unit for my QSXM2 riaa preamp (it's working fine on batteries).
D7 and D8 seem to be reversed in your photos.
Probably i'm blind or just i have to read deeper in the manual.
Cheers
Paolo