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As much as a defective Power MOSFET can prevent a series-protected voltage limiter, a problem with the crowbar thyristor or its control circuit can defeat its purpose. Nothing is ever perfect.

I would not designate the proposed circuit as an overvoltage protection circuit. At most it's something like a "voltage clipper" or "voltage limiter" for excessive input voltage excursions. Let's

Makes sense. I have everything I need here at work and, at home. I've also done plenty of voltage readings of this device in the past but, like I said, being no one here actual

Ah, yes. I had forgotten that. Thanks. -- Regards, Tony

Hello, I have uploaded circuit that finally works as executed with a good TLV1805 model found online. The problem was the ic. I have used a voltage comparator from the LTSpice library list with an

Oops, I left out a word, two replies back: Andy

I am pretty sure this has nothing to do with version 24.1.1.? I think LTspice has always behaved this way - going back at least as far as LTspice IV and probably earlier. Bee careful here.? When

That can easily be avoided too, if you know you want to. Technically, the "hidden" connection is to a not-hidden pin on the A-device symbol's lower left corner.? If the pin is left floating, which is

Got 'em. Thank you. One more to go.

Just an observation: there are a number of opamp models (for example) that bring a V- (negative supply) pin out of the subckt. The assumption being that the device can be used with V- grounded or with

Doesn't M-W include, 'plumb'? vt:? to investigate deeply, and plumb adj 1: vertical, adj 2: very, completely (mainly US)?

It is the case in 99.99% instances. There are a few Spice models that include parasitics that vary with packaging, but they are very high-frequency devices. -- This email has been checked for viruses

I'm afraid I can't offer any leads to Spice models. But I doubt that the transistor is very different from others with similar voltage and current ratings. The data sheet will show that (or not, if

Hello All: Just an FYI. On 24.1.1, I added a hierarchical connector named RTN, and conductors, to route a net that was connected ground (GND) (node 0), out of a hierarchical schematic to permit

I think the word "out" used here refers to bringing the net or node from inside to outside the subcircuit. Andy

I think "plumbing out" here means similar to "routing out" or "bringing out".? Connecting. Andy

OK. Still I don't understand the meaning of "plumbing out". Is it meant to replace "disconnect"?

I think eewiz now made it clear ( /g/LTspice/message/158142 ) there that wasn't any relevance to ground.? That was something going through my mind, and I guessed wrongly.? I was

In my installation, BZX84B33VLY is built-in.? I wonder if Analog Devices removed it from the library in your version?? You did not make a typo with that. Andy

I have. Being french, I have no merit. The french name for lead is plomb. But I still fail to understand the relevance to ground. I understand the analogy between current flow and circulation of