DaveE's latest activity

It is standard practice these days for the ground connection to be made first and broken last when HV connectors are inserted or...

That's my guess too. It's too simple not to work at all. Scanning has an advantage in brightness over divergent optics. PS: Google...

Either will spread the beam in the far field.

They are an extremely common construction component, they just aren't usually that long. So common that for smaller assemblies you...

Those rods don't seem trivial to make. I would guess you need a fat section in the middle for the thread, or maybe a special clamping...

The journey of Physics involves many steps, each essential. The inspiration of Newton, with calculus, to order the earlier chaos...

@Patch Cabbage -- it's time for you to start working on your toolkit and skills for working with circuits if you want to keep going down...

This is one of my first real designs for money as an EE. It was drawn by hand (early 1980's) and is a #$@! sight clearer than your...

Maybe you should type "\text{,i.e.}" ?

Vertical and horizontal in this case.

\text{,i.e.,} is one way, which looks like this: ##\text{,i.e.,}## or did you want ##\text{-i.e.,}##? Your post was a bit confusing...

You could just buy a laser level. They've already figured it out for you. OTOH, they won't be as bright as you want because they don't...

I think this circuit will work the same if you replace all of the transistors with a piece of wire (OK, maybe a forward biased diode)...

Normally I reserve this post for people that don't provide a schematic, but in this case I'll make an exception.

If you cleaned that schematic up to make it more readable...... - .....it still won't work.