How to select appropriate components?

Thread Starter


Joined Nov 3, 2019
I've just started tinkering and I'm having trouble with a pretty basic concept: reading and selecting components.

I have some push buttons that say ACDC 24V — does this mean in need 24V of AC -> DC power for the component?

I have another push button that says: UI: 440V AC15 Ith: 10A DC13 — what does this mean?

I also have a 120V LED. If I want to incorporate components like these into my circuit, do I need a 120V power supply? Should I be looking into a voltage amplifier? I like a lot of these higher voltage components because I find them pleasing from both an aesthetic and tactile perspective, but I'm worried about having to manage a big range of voltages in my circuit.

Any help or advice you could provide would be appreciated!


Joined Mar 31, 2012
What the specifications mean depends heavily on the type of component.

For something like a switch, the ratings are usually maximum ratings that you need to stay below.

For something like an LED (sounds like a module of some kind), the spec is what you are expected to actually provide.