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I dunno. If I recall correctly, a DC signal should work just fine. You just won't be using one of the quadrants that "every other Joe" usually uses (the negative MT/negative gate). You'd be using the

that means if you apply a dc current to the gate (higher than trigger current in all quadrants) the triac will be on all the time, throughout the full sine wave? in which magnitude should one expect

This is correct. However a triac _will_ have different sensitivity in different "quadrants" (the term that the datasheet will used to refer to the different combinations of gate polarity and other

it only needs to be a pulse, it is sayd the optimum is a pulse chain for best triggering but it can be a continous signal too. I'm not entirely sure if the pulse can be both polarities or only the one

I'm considering using triacs to switch 110VAC instead of relays. Never used triacs before though and I want to double check my understanding. First thing is gate signal. This is AC, not DC correct?

The quadrant thing refers to the gate sensitivity differences between the "forward SCR with a positive trigger", the "forward SCR with a negative trigger", the "reverse SCR with a positive trigger"

A 9V battery isn't going to have that much kick to it, compared to other types... That 48 volt requirement is typically what's suppl

I enthusiasticaly second Dave's recommendation. Advanced Circuits does all of our boards and I couldn't be happier with them. Their prices are low, their quality is excellent and they ship on time,

Hi Richard.. I thought of this but sunlight seems to play a problem. I have a pair which I use for the TV's around the house but if direct sunlight they seem to not work.. I like the idea of using the

Just some info.. The two chips mentioned are available.. Cost around 13 Dollars. I have received email back and they will ship my way so Iam half way there.. Still need to TX it across but Iam sure

Hi, I'd like to build a good quality portable/compact mic pre for field recording, that would be powered by a small battery (9V or other compact battery types), and provide phantom power for the

This came up a few months ago, it is against TI policy. Drat! But I can email copies to potential customers (wink wink!) I did find the direct link, it is at:

Hi Dave - I have a friend who owns a mid-sized business - he uses and recommends http://www.4pcb.com Jim Dave Mucha <dave_mucha@...> wrote: Hi all, I have a small board with a couple 8 pin uSOC

<dangermouse1956@g...> wrote: say one is any an placed/designed stop. ABnormal too slow machine way to operators of haven't been

I realize that I'm jumping into a thread here, but I really want to say one thing. An E-stop should be as fail-safe as physically possible. If there is any scenario in which the driver could fail in a

Hi Bruce - Would you consider uploading your article to our "files" area? Thanks, Jim Bruce Carter <brucec@...> wrote: for either such a is. <g> the few that damned if I'm vinyl and into be

Hi all, I have a small board with a couple 8 pin uSOC chips on it that I am starting to sell. I am looking for an assembly board house that can assemble these for me. The boards are pretty small and

Actually, I just realized. Using E-Stop to cut ALL power to the driver is probably a bad idea. The A3977 needs power to handle the stepper motor deceleration (Back EMF). If I just cut all power I'll

for either such a is. <g> the few that damned if I'm vinyl and into be out RIAA is RIAA, regardless of whether it is picked up by magnetic or ceramic cartridges. The difference is in the level. That

no, never giving up, but getting frustrated. did just that, not complete yet but seems to work now. great idea. i know 'bout multiplexing but i have decided once in my lif