What is the recommended Vdrop or Vout given a Vin of 15Vdc?
Thank you,
Wheezer
10V Vin-Vout difference is ample, 6V is fence not to lose some spec.
6V is fence not to lose some spec.
Salas,
You have a fully functional crystal ball!
I might have to go to the HV version; if so, can you tell me the latest Version non-phono? If anyone has that schematic, can you please post it?
Thank You,
Wheezer
Magic mirror and wishful thinking
I miss 2 parts and a some heatsinking, got to meet a busy mate to get those, before hitting the perfboard. Meantime I got a bunch of LT Spice models from Iko (thanks man!) and looked a bit on its theoretical performance, also I applied theoretical compensation & termination. It looks responsive on paper to what I had in mind to do with the soldering iron. I thought of terminating with a few uF PP and adding an R series (Zobel) as I do in the simplistic HV. That would save shopping for this or that specific esr electrolytic and its whims with age and ambient. Fixes it for termination, and gets rid of possible Cout big chemical cap's subjective signature. Now, how close those models are to the bugs and the wires that I am going to stick on that Swiss cheese board, only cosmic gurus know. Encouraging indications non the less, but the proof is (as always) in the pudding.
Anyway. The following captures represent loop phase margin, rejection and output impedance.
There is a V1.2 waiting to be tested though
That one is the general line, I am afraid of oscillations. Its to be tested and tweaked soon.
I miss 2 parts and a some heatsinking, got to meet a busy mate to get those, before hitting the perfboard. Meantime I got a bunch of LT Spice models from Iko (thanks man!) and looked a bit on its theoretical performance, also I applied theoretical compensation & termination. It looks responsive on paper to what I had in mind to do with the soldering iron. I thought of terminating with a few uF PP and adding an R series (Zobel) as I do in the simplistic HV. That would save shopping for this or that specific esr electrolytic and its whims with age and ambient. Fixes it for termination, and gets rid of possible Cout big chemical cap's subjective signature. Now, how close those models are to the bugs and the wires that I am going to stick on that Swiss cheese board, only cosmic gurus know. Encouraging indications non the less, but the proof is (as always) in the pudding.
Anyway. The following captures represent loop phase margin, rejection and output impedance.
Attachments
Nice job Salas
Waiting for some good news on the other subject too
(lowMC RIAA w/4critters)
Hopefully the 46V 1.2 above is destined for that phono if everything goes well. If not, we still have the established one.
Perfect9 to 13Vout it can be good for, with 20Vin. Is that OK?
No.Also is the load less than the 400mA CCS you specified?
Thanks,
W
Use a LEDS CCS V1.0 schematic. You just need to use low R1 for a current at least +20% of your (substantial) 400mA load. Depending on your LED Vf you must have 5W loudspeaker crossover style sandcast resistors maybe 3R3 or 4R3. The voltage across them divided by their value will give you the actual running current. Use 3K3 trimmer in the Vref, adequate sinking, and you will be ready.
Salas,
Thank you very much for the detail and specifics for my application.
It took a bit of time to find this; I assume this is V1.0:
http://www.diyaudio.com/forums/powe...tic-salas-low-voltage-shunt-regulator-51.html
Thank You,
W
Thank you very much for the detail and specifics for my application.
It took a bit of time to find this; I assume this is V1.0:
http://www.diyaudio.com/forums/powe...tic-salas-low-voltage-shunt-regulator-51.html
Thank You,
W
Attachments
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
- Home
- Amplifiers
- Power Supplies
- The simplistic Salas low voltage shunt regulator