Recent content by ramona

I had a similar thought but only as an option. My solution was from VZAudio but unfortunately Vallery passed away (RIP) and it's not available now. It was based on THAT1206 chip from THAT corportation and it requires minimum parts, can easily implemented on a breadboard. I can send you the...

Audionet stuff are super-crawded, I doubt there is a room for TP reg, I'd go for a much smaller one. We always over-estimate the space we have left inside a chassis till it's too late and we have bought the parts. There are some smd solutions, most using new LDOs like LT3045 but I don't prefer...

Using a magnifier you most probably will find out the missing tracks. Using a small gauge wire which can easily be flatten you can repair them. Just be patient, if you can't find the schematics and you think it's necessary you can reverse engineer the whole analogue power supply. Ain't no use...

There are linear regulated supplies too for power amps, one being the Naim approach. If you are biamping, it's tempting to do as Mike stated, use the regulated one for HF. The only downside with linear one is that you need a bigger heatsink if you are providing power to the whole amp and not...

Sad to read this. I use EI cores with preamp, DAC and phono but these are relative small. The only big EI core transformer I have is in my isolation unit and yes there is a buzz. Anyone made a comparison between R-cores and EI-cores with a poweramp ? The problem with R-cores is that it's very...

What kind of SMD are we talking about, maybe of this kind ? I doubt they are like these

You cannot set either via UBIBs. The current draw (load) is set on the main DCG3 board via bias resistor R10 (7.5R ~ 145mA, 10R ~ 115 mA and 12R ~ 100mA). You can set the overall current (CCS) that UBIB provides by current limiting resistor (R1, 2W) on the UBIB board. The formula is CSS=600/R1...

7-10V was for BIBs, UBIBs are super fine with 5-7V. I had 21VAC tran (toroid) for BIB and went to 19VAC (EI core, same as 18VAC toroid) for UBIBs Take note of rect diodes you are using, i.e. Qspeed ones drop extra 1-2 volts compared with normal ones. Due to heat, I'd suggest to really think...

If you look closely, you'll notice the extra thick (10mm ?) alumunium plate between transistors and chassis's side panel. The panel alone won't cut it, it's a class A circuit and emits quite heat. If someone goes all the way with Salas's UBIB shunt regs, heat will be the biggest problem but...

Naim amps generate very little heat so quality caps like SLCE last a lifetime. Sikorels are rated 25000 hours for 85C and 200000 hours for 40C.

That's Edwards switch, high quality one. It's for attenuator, make-before-brake whilst for switch you need a brake-before-make one.

Edwards are great https://www.hificollective.co.uk/switches/blore-edwards-2pole-6way-selector-switch-opxr-1054-01.html

He'll surely be missed and remembered. Not the most famous but one of the most influential guitarist. R.I.P.

They are available from Fleabay just search for 'Solid aluminium capacitors' Mostly you can find NOS parts from Philips.

She would most probably buy a small TV, :rolleyes:, too high hopes for this one A wife present this too ? You are vvverrryy lucky, you already have the best present, I tell you.