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This might help https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/151/devicemarkingconventions.pdf for National Semi IC's

Maybe that circular thing in the middle isn't a transformer, but instead is a hamster wheel-driven power supply. Just joking...

They are only going to be close if they're measured under close to the same conditions - e.g., same bias current or voltage, etc.

Hmm, I just stumbled upon this thread, so I'll make a late addition... A very straightforward configuration in MOSFET clipping is used in the CULT Ray, out of Japan. (I.e., no diodes are in series w/ the 2N7000 in the opamp's feedback loops.) The schematic is here (turn on Japanese translation...

Does anyone have either a leftover PCB or a Vero layout design that they are willing to share for the MOSFET Driver Redux?

Does anyone have a stripboard layout design that they are willing to share for the MOSFET Driver Redux?

Look for A-K, i.e., Anode (+) - Cathode (-)

Why take the risk w/ AliExpress? If your completed pedal doesn't sound right, then you won't know if it's miswired or a bad vactrol... For new quality vactrols, try: https://cabintechglobal.com/semi https://aionfx.com/components/...

Chuck's Germanium FETish Germ FETish etc

@Robert - thanks, I sure didn't see that little SMD inductor!! So I am guessing that the toroidal choke in the original is for removing high frequencies from the 9V supply. Wow, that looks like Strymon does a very fancy build - high quality pots, what looks to be a relay, etc. Anyway, again...

@Robert - on the Stock Fuzz (Strymon Canoga) I am having some challenges locating any toroidal 680uH inductors of that size (looks like ~10mm OD in pic above), the ones I'm finding so far on Mouser are much larger, ~25-30mm OD. That thick copper wire suggests that I want low DCR, too. I do see...

Good question, I'm not sure, but it's surely set by the FV-1 so check out the various docs at http://spinsemi.com/products.html Looking at the application notes (http://spinsemi.com/Products/appnotes/spn1001/AN-0001.pdf) the clock is normally set to 32767 Hz, and delays *appears* to be...

I don't know about the 2SK209-G, but the 2SK209-GR is still available as an TO-236 SMD from Mouser. Not disagreeing w/ the other answers above, just noting...

Ah, so if you want custom PCB makers (like PCBWay, etc), then Dead End FX isn't in that market. But Dead End FX does make PCBs of guitar effects much like what PedalPCB does, and they do ship from Canada. www.deadendfx.com

Doesn't Dead End FX ship from Canada?

What I use: Not as good as a more serious and expensive chair, but plenty comfy and an unbeatable price. I put pads on mine, to better protect the seat from tears. Note added - from Ikea

You could always include bias resistor(s) in the switched transistor sub-network. The switched resistors could be all or only part of the total bias resistance, but are enough that both transistors are optimally biased.

Ouch, surgery... I wish him well, and a full and speedy recovery.

I see that Deadend FX's website says "Temporarily closed until further notice". Anybody know what's up? I don't want to pry, but ... I'm wondering if it's a financial issue (e.g., tariffs hurting them,etc.) or of a more personal reason (e.g., just needing a break or vacation). I have built at...

My storage solution consists of wood bins made from cut up scrap lumber and plywood, sorted by component type and value. For storing passive components, I use whatever small bags I have on hand - including a lot of reused baggies. For storing semiconductors, I use conductive baggies I bought for...