The SupperTeddyReg can go down to 1.2V, however, output voltage should be adjusted when the regulator is loaded.
Has gone 0.030Vout😡 & I connected his own BII reg with the ferrite bead & also has gone, so now I can hear music...
Do you mean the regulators burned out? You may have a short circuit in your DAC.
To be sure the DAC isn't damaged first I need to try with 1.2V because both 1.2V regs (Trdient & pcb BII) burned.
Russ of TP said me that BII can't by feed with 5.5Vdc when Tridents are used & I used BII with 5.5Vdc.
Russ of TP said me that BII can't by feed with 5.5Vdc when Tridents are used & I used BII with 5.5Vdc.
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Vbe+Vpx2 upwards. 1.5-2Vo heavily with low Vp Jfet as error amp bjt load. Has been done for no26 heaters at 1.5V.
As I will need Vo= 1.8, Vbe (0.6) + V pitch off x 2 means that I need a Jfet with 0.6 Vp. Isn't the K170 suitable then?
Cannot find the #26 filaments schem right now.
Cannot find the #26 filaments schem right now.
In bigger case output transistors Vbe can be more than 0.6V depends on Ic also. You just check with your output BJT @ your running settings. 1.8V is well between 1.5-2V I mentioned so no problem. That #26 heaters one was DISCO's.
Thank you Salas, I saved the # 26 HV reg, but not this one.
Anyway I'm planning to power up some digital stuff: few mA only (even if I don't know exactly how many so far).
CCS set for 150-200 mA max with 9610 (as I have many in my bin).
This project has been set aside for the moment: waiting for V1.1 first 😉
Anyway I'm planning to power up some digital stuff: few mA only (even if I don't know exactly how many so far).
CCS set for 150-200 mA max with 9610 (as I have many in my bin).
This project has been set aside for the moment: waiting for V1.1 first 😉
Attachments
I think I spotted a mistake in the PDF. The BOM states Q104,204 and 304 not only as 550 - 560, but as 117 also.
Very good work though Salas! Any ETA for the boards?
Also I have spare 9520 and 9540. Could I use them instead of 9530?
The BJT for Q106 are only recommended for the low voltage one?
Very good work though Salas! Any ETA for the boards?
Also I have spare 9520 and 9540. Could I use them instead of 9530?
The BJT for Q106 are only recommended for the low voltage one?
Soon, I am finishing something with Crt. Any other mistake spotted? So to change and upload again. Don't change Mosfets if you can. Will work but a bit ''slower'' than tuned. The BJT can span from low to high. Gives narrower OLG and much higher Zo, but its interestingly open supersonic Zo due to lower capacitance. Its a VAS grade one, popular in modern power amps.
Thanks for the reply. I couldn' t spot anything else.
Have you ever tried it with BJT in higher voltage regulator? I' ve seen the simulation, but has anybody tried it? Just curious! I have some 15030 spares.
Have you ever tried it with BJT in higher voltage regulator? I' ve seen the simulation, but has anybody tried it? Just curious! I have some 15030 spares.
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No, only in low. Gives 12x the Mosfet's Zo value in this design. But its flat Zo in band also, and open above, so its interesting. Beyond those extra 2 Qnumbers I have to wipe, did you find the guide would make you understand correctly? It was very difficult to write the least possible for something so configurable and wide application. *15031 in positive regs.
It is something to try in an actual application then and see. *I have 15031 also.
The guide was easy to understand for myself, but I have already build a couple of your regs point to point already. I would advise ones not familiar, to read it a few times first and then build, in order to avoid the usual "why it' s not working" questions.
The guide was easy to understand for myself, but I have already build a couple of your regs point to point already. I would advise ones not familiar, to read it a few times first and then build, in order to avoid the usual "why it' s not working" questions.
At least there will be a reference text to ask focused stuff. Better than nothing.
Not a mistake, but I dare say you could also list MJE15028 as equivalent to NPN MJE15030 and MJE15029 as equivalent to PNP MJE15031. Only Vceo is different (120V vs. 150V) That's plenty for this application.
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