Kerry

Happy Birthday Shelly!

That might be possible, but not optimal for me. I might just have them made.

Thanks. I saw those and they won't do for what I need.

For the +/-15v supplies, the pad transistors do not need heat sinks.

I'm looking for this type of panel bearing for a 6mm shaft: 1705 Keystone Electronics | Mouser Thanks

Very nice and GLAD PÅSK!

Happy Birthday!

Condolences to you and your family. It’s wonderful that your uncle’s kind soul was evident even though he was nonverbal. RIP

Happy belated birthday.

Happy Birthday, Doug! Have a great day

My condolences, Bryan.

Happy Birthday, Al! Get yourself something nice. Cheers

Sounds good. For the first test (10M90S / DN2540), I run these with a little less current these days (you don't need to). I don't have the schematic for this board in front of me, but I thought the set resistor for this was around 3K. Is that R1? On the second test, you could also put the (-) on ground and then check the voltage at pin 6 of the reference from ground to pin 6. As long as the voltage reference is in the right orientation and functioning, this will work. I don't do this test unless it's not regulating (low voltage test above). That being said, if the reference is in backwards, things will pop.

If you want to test at full load for the Carbon, it would be around 6K at the full 450V. I would parallel at least two resistors and mount them on a nice big heat sink... Here's a test load I use for the T2 supplies. Even with a very large heatsink it will get hot pretty fast. You can certainly test with less current (recommended), which should expose any issues with the power supply. Also, I agree with James on testing first with low voltage. I typically do 30V - 60V on the input of the HV supply and then put a temporary resistor across the set string (excluding the first 20K or 14K resistor - depending on the vref used). This way you know the power supply is regulating (figure on about 15V - 20V of dropout in order to regulate). After that, it's unlikely that there will be any issues. Good luck

Happy Birthday!

Beautiful work Steve! Congrats

The second might be better because it supports smaller taps.

My condolences Todd.

I hope you had a great day Nate! Happy Birthday and best wishes

Happy Birthday Craig! Enjoy

Some people have been asking for specs on the Aeras, so here they are... Input: XLR – Accepts balanced or single-ended (with grounded RCA to XLR cable) Input Impedance: 50K x2 Gain: 1000x Frequency Response: 1Hz – 60KHz Max P-P Voltage: 1500VAC Max RMS Voltage: 1000VAC Output: Stax Pro-Bias x1 Vacuum Tubes: 6S4A x4 Power Consumption: 100W External Dimensions: 19 cm x 34.3 cm x 14.2 cm (7.5” x 13.5” x 5.6”) – W x D x H Weight: 5.5 Kg (12 lbs) Mains AC: 115/230VAC Switchable

Happy Birthday Naaman

^^ I knew he was doing this video but hadn't seen it yet. Thank you for finding it

I'll be there showing off our new amp Stop by. We're in the Majestic room.

Happy Birthday Dan! Enjoy