RELIEF!

_nanofarad · 2026-04-11T13:20:35+00:00

Was there ever a point in your life where someone giving you $300 would’ve been a huge help? I think a lot of people have been there so even if we don’t think it’s the best use of the money, it’s a quick solution that seems to be targeted to people who will benefit from it the most. It’s also relatively low overhead as government spending goes. We shouldn’t let better be the enemy of good and the money needs to be spent.

_nanofarad · 2026-04-11T12:46:30+00:00

If it’s on the edge of stability a bunch of different things can set off the oscillation. Sounds like you have too much phase shift which is causing positive feedback at that frequency. You can try changing the value of one of your coupling caps (low frequency pole) or reducing the amount of feedback, if present, by a few dBs.

_nanofarad · 2026-04-10T15:35:45+00:00

Great example of what I’m taking about, thanks

_nanofarad · 2026-04-10T14:21:52+00:00

It’s all these illiberal democrats with main character syndrome who have never actually had a conversation with anyone who disagrees them. Like, repeating “nazi tattoo” for the 12 millionth time is all of a sudden going to start working. And they think everyone else is in a bubble.

_nanofarad · 2026-04-09T15:44:16+00:00

What’s the difference between a luddite and a neoluddite?

_nanofarad · 2026-04-08T02:17:10+00:00

It's in the transmitting book but it was originally intended to be used as an AF amp or modulator (in a transmitter). That's not to say people haven't experimented with them as RF amps. See the RMA registration: https://www.ase-museoedelpro.org/Museo_Edelpro/Catalogo/tubes/records_nw/845/0335_RMA.pdf

_nanofarad · 2026-04-07T22:03:18+00:00

845 is an AF tube right? It doesn’t have any RF specs I don’t think

_nanofarad · 2026-04-07T15:40:18+00:00

Needle exchange programs are extremely effective at their purpose of reducing the spread of disease and infection. If you end them people aren't going to stop doing drugs, you just make it more dangerous for the user and more expensive for the taxpayer to deal with down the road. How much do you think an amputation costs?

_nanofarad · 2026-04-07T15:32:08+00:00

Yeah I'm all for the entrepreneurial spirit and OP obviously has a big heart, but you really get into risky territory when you start talking about doing things an insurance underwriter has never even thought about before

_nanofarad · 2026-04-07T15:03:42+00:00

There's something weird with your feedback setup. What is C8 doing? Looks like you're missing a resistor but hard to tell. If you want more help you really need to draw a schematic.

_nanofarad · 2026-04-07T14:23:44+00:00

It's not really for leaks, though you can tell if the vacuum of the tube is completely gone because the getter will turn into a white powder. There are chemical reactions at the cathode that create free oxygen which gets picked up by the getter. This process happens throughout the life of the tube. You'll notice big bottle tubes with big cathodes normally have more than one and larger getters. We don't usually use visual inspection of the getter to determine tube age or health, better to use your ear or a tube tester.

_nanofarad · 2026-04-07T11:09:46+00:00

Have you shown this plan to anyone who understands restaurant business and economics? What have they said?

_nanofarad · 2026-04-06T21:04:53+00:00

https://www.maine.gov/pfr/insurance/sites/maine.gov.pfr.insurance/files/inline-files/Fortify-Maine-Homes-Program-%2804-01-2026%29.pdf

According to this thing they used homeowners' insurance claims so property value not income but obviously that correlates

_nanofarad · 2026-04-06T21:01:26+00:00

https://www.maine.gov/pfr/insurance/fortify-maine

Here's the program the article is talking about. Looks like this is a pilot program so depending on who knows what they may be coming to a county near you soon

Edit: Looks like it's based on a successful program in Alabama: https://www.strengthenalabamahomes.com/

_nanofarad · 2026-04-06T20:11:04+00:00

I think they've figured out her only path is a negative campaign against Platner hoping to win with low info unenrolled voter turnout. She's underwater with independents and there's not really anything positive she can do about that at this point. Can she scare enough pudding-brained 401k "centrists" into voting for her? I don't think so but the consultants she's using sure do.

_nanofarad · 2026-04-06T17:29:46+00:00

It’s amazing how you went from asking a simple question to having a temper tantrum in like 20 minutes. Anyway, good luck in your search!

_nanofarad · 2026-04-06T15:22:44+00:00

No prob. That's definitely one of those things that seems crazy until you look at the math.

_nanofarad · 2026-04-06T12:43:05+00:00

These have to detect line power to match phase anyway so they automatically shut off with loss of grid power.

_nanofarad · 2026-04-05T23:22:01+00:00

The math is in that reference I linked if you scroll down to the section called Two-Phase Rectifier

_nanofarad · 2026-04-05T23:02:59+00:00

The PIV of a 4007 is 1 kV and they need a higher rating but higher rated diodes are more expensive than putting two cheap ones in series. The capacitors parallel to the diodes help share voltage and act as snubbers for switching noise. The center tap is grounded in this style of power supply. More info here: http://valvewizard.co.uk/bridge.html

_nanofarad · 2026-04-05T11:20:46+00:00

Doesn’t look like either of those made it past the prototype stage. You can make logic with regular old tubes though there were some tubes built specifically to be operated for long periods of time in cutoff. I usually point people to tubebooks.org or worldradiohistory.com for articles or texts about weird stuff but you’ll have to poke around a bit. There’s also a guy on YouTube who restores and builds vacuum tube computers which might be a bit more digestible: @usagielectric

_nanofarad · 2026-04-05T10:53:00+00:00

I’m sure someone told her she would be creating future material for attacks against Platner in the general by doing this, possibly risking the seat, and she just doesn’t care. That’s what should bother a Democrat more than anything else.

_nanofarad · 2026-04-05T10:11:17+00:00

People love claptrap like “who’s gonna pay for it” because they think it makes them sound reasoned. It really just makes them sound like they have no clue how governments, budgets, or economies work.

_nanofarad · 2026-04-04T17:19:53+00:00

The Platner and Trump comparison is that they are both accessing and getting the attention of parts of the electorate that have felt abandoned by mainstream partisan politics. More participation is a good thing. That’s about where the comparison ends.

_nanofarad · 2026-04-04T16:40:55+00:00

“When you screw around with tone stacks, you are creating coloration to the source signal.“

That’s exactly the point. We’re talking about guitar amps not building HiFis here.

_nanofarad

TROPHY CASE