30 uF motor - 50uF motor - 200 uF MKP. I think MKP was 76 mm in diameter. Reading goodnightstories now
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What voltage 400V?
I owned & sold 100uF 400V MKP Solen dimensions like an aluminium Coke bottle, yours are bigger.
I owned & sold 100uF 400V MKP Solen dimensions like an aluminium Coke bottle, yours are bigger.
My Salas 6v6 pre. With Lundahl LL1660/25mA output transformers. Without SSHV2 still.
DC heaters via umbilical. Since I had no place inside left.
DC heaters via umbilical. Since I had no place inside left.
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Yep. Ikea cutlery box. Essentially the Salas 6v6 preamps standard. Without shunt reg. Sounds goods. I have never done any measurements on my amps. Because I don't have any facilities to test it with tools. Always use my ears as the final arbiter. Transforms my computer room gainclone by giving it a nice big bold tone. And sounds transparent with that big bottle tone in my main system.... if that means anything. I'll post some pics of the inside and some minor details that differ....simply because I had different stuff in my ports box. Solid state rectifiers with a damper tube after that...and elaborate snubber before the solid state rectifiers....small little chokes in the primary followed by a "standard" snubber..cap->resistor->cap.
Thanks.
Yes. I started off with cap input. Essentially it sounds pretty much the same. I mean the main character of the amp does not change really. But I did not want to worry about this cap or that cap anymore and I had no current use for my Lundahl's. Wired them up 4.5:1. In essence I moved to transformer output because I could. 🙂 And I found that the background had less "noise" with the output transformer. Also I preferred the lesser gain of the transformer output.
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That line reminds the classic Nelsonian argument.🙂 Can't be wrong using stuff in hand when fitting the bill. I.e. giving proper gain and Zo for a given system in this case. Technically it can add the odd ringing on a square wave if not tuned with primary series resistor and RC across secondary. Cutting some bandwidth also. But to know exactly it takes a gen and CRO. Very nice wooden realization Bas, true diy. Congrats.
Captain Ahab had forgotten to throw the anchor
Ripple was bcs ct was not grounded to mother earth.😛 I usually let my poweramps tie both them and pre audioground to earth. Now all measurable ripple is gone, ie scope shows small microvolt noice but no waveforms. Some 10th of a volt slow fluctuation , but I dont think thats oscillation, just tempdrifts and normal linear PSU behaviour.
285 V at 2*38 mA current means that the SSHVS gonna eat 20ish and Im eding up at 260ish (ca 20+20 mA/rail) on the anodes for choke CF. Worth a try.
Correct. Even though cathode stripping does not occur apparently when HT is present without the heaters being warm. I still like the slow ramp up.
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I did not use a common mode choke. That was just to demonstrate the use of a tube damper diode after a ss rectifier.
Heloo
I putted some stuff together today to do some tests. Its a choke loaded cathode follower version with 110 H chokes. Its still ragedirag and I have some absent ground hum but it sounds decent.
I did some measurments and for compareness I took an old Rozenblitz Grounded Grid that I built long ago. 6V6 to the left and GG to the right.
10Hz, 20Hz, 50Hz, 100Hz, 1kHz, 5kHz, 10kHz and 20kHz. No wiggle at least😛
I putted some stuff together today to do some tests. Its a choke loaded cathode follower version with 110 H chokes. Its still ragedirag and I have some absent ground hum but it sounds decent.
I did some measurments and for compareness I took an old Rozenblitz Grounded Grid that I built long ago. 6V6 to the left and GG to the right.
10Hz, 20Hz, 50Hz, 100Hz, 1kHz, 5kHz, 10kHz and 20kHz. No wiggle at least😛
