DaveE's latest activity

But then what regulates the resistor current? If the voltage applied changes, so does the current. Just semantics, I guess. It works...

I drew the diagram that way, as it fitted the written description. That forms a current regulator, as the resistor current is multiplied...

Very fast rise time switches with (sort of) high power. Most have a β emitter to "pre-ionize" the gas. It's a spark gap, but not a...

Krytrons are exceptionally fast switches. They were originally used as the TR switch in radar systems, where one antenna is used for...

This thread is now on a short leash.

I doubt you can build a reliable power supply without documentation like schematics. I've also done several of this sort of design and...

I have been working with linear supplies for more than 50 years. I know what I am doing. Post your circuit diagram and I will show you...

Welcome to PF. Your Profile shows that you are in the UK, so I did a Google search on amateur rocketry clubs in the UK and got lots of...

I'll vote for the Hyatt Regency walkway collapse in KC, 1981. It killed 114 people and injured 216. Maybe not the worst disaster, but...

I have some solemn news to report. Many in the community had been wondering where the prolific @Vanadium 50 has been. V50 hasn't posted...

To drag myself back on topic, another thing I've seen in real life but don't have good photos of: This is on the north coast of Arran...

There's a sematic thing here. If you call it an input filter, most everyone will think it works at 50/60/100/120 Hz. But if it's a PFC...

Yes, true. But those inductors are big, heavy, and expensive. So you'll do well to leave them out in low power designs. If you care...

I think you're just learning why I hardly ever used those things for my breadboards. Plus, they aren't stable or durable. Basically, I...

You can choose whichever convention you like. You just have to be careful to be clear about the convention you use and be careful to...