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It was a lovely New England autumn weekend, so a walk in the woods, some focaccia, and some apple galettes.

Dang it, now my YouTube recommendations are all jacked up.. Okay - now I can go purge my entire internet history.

Got the repaired rear wheel back so as long as you can forgive non-matching spokes, all is well. It was a pretty epic day out on the trails, sadly i only had about an hour.

Have you seen this, BCV61? To be used as current mirror. You get a hundred pieces for 22 USD, less than one 2SC3381.

Installed Win 11 on laptop. Nothing to complain about. Don't mind the appleish center buttons (can change if wanted). Seems more like an update vs a revision.

For the last couple years, there's been a recurrent meme on YouTube. Artists are taking the opening lyrics (and I use that term loosely) to the 2007 smash hit "Low" by the rapper Flo Rida. The lines in question are performed by T-Pain and the army of autotune plugins he uses. I cannot stand Low. I NEVER liked it. That said, the "Apple Bottom Jeans" meme is one of the most amazing things I've seen on YouTube in years. The conceit of the meme is to perform Low in the style of a different artist, often from a specific time in their career. The whole thing works for two reasons: first, Low is merely the blank slate for the artists to work on and the bar of entry is so high. In that second regard, Apple Bottom Jeans is similar to the Hitler/Downfall meme. Advice animals this ain't. I know, I know. "Free Bird!"

Thank you all! It was a nice day!

Who cares? Make some fun stuff, or find a local wood nerd to come take a look if you’re worried about making a cutting board out of poisonous wood.

These ones for example: https://www.mouser.com/datasheet/2/308/1/MBT6429DW1T1_D-2315127.pdf https://www.onsemi.com/pdf/datasheet/bc846bdw1t1-d.pdf https://www.analog.com/media/en/technical-documentation/data-sheets/MAT01.pdf https://toshiba.semicon-storage.com/info/docget.jsp?did=19156&prodName=HN1C03FU https://www.digikey.com/en/products/detail/linear-integrated-systems-inc/IT120-PDIP-8L/13688035 https://fscdn.rohm.com/en/products/databook/datasheet/discrete/transistor/bipolar/emx26.pdf I would try the first one or MAT01AH if I were sure that I don't need > 80v of Vce at the battery ( And I am not sure that we really need here low output capacitance. If no then there are another nice options. But I don't think that using separate single transistors is a good idea for current mirror due to temperature drift. I prefer one crystal or at least one package.

Xenia Rubinos - Una Rosa

Some of those are outright blasphemous....! I'm with you overall on "Low" (my son listened to it for a short spell, I told him never to play it in my presence)

This morning I built a rustic Redwood table to go on the deck of my boss' new house. Next up, benches. Last week I built a similar table for his dining room.

A few thoughts about replacing transistors to a contemporary parts: 1. I thought that stn9360 is just an ersatz for 2sa1486, but it seems that it is even better than the original one. 9360 has mush higher hfe and a little lower capacitance. It means that it is more suitable for the active battery and CCSs 2. KSA1220A has lower Vbr (160v instead of 200v for 2sk216) but it is ok even in original scheme. Does it mean that 2sk214 is safe to use ? I also afraid to get lower sound quality because of poor linearity of this mosfet (. 2sk216 is much better in this term. So, I am trying to find better substitution 🙂 . I don't like to use obsolete parts. It makes me slightly nervous. Now I am going to use 216/79 but I want to build someday a "fully-contemporary parts" T2 🙂. 3. 2SC3675: FJPF2145 has lower hfe and Vbr (. I have enough 3675s but also want to substitute them in future. Maybe cascoded CCS using JFET + DMOS ? It has much better resistance(look at the photos from the book) than single-bjt CCS. Cascoded CCS measured resistance Single BJT CCS measured resistance 4) 2SK246 -> 2SK208 5) 2SC3381 -> HN4C5J . What about matching of halves ? There is no info about max difference in datasheet. Also I want to build the amp with replaceable active battery - soldered to the main board in 2 points. I don't trust mechanical connection. UPD: It looks like KSA1220A is obsolete now (official status - "last shipments")

I think you are right. I’ve used 2SK879 in one T2 battery since several years without any issues. From datasheet 2SK208 and 2SK879 look quite similar.