Is there something like a buffer that does not require a data line, but can hold the DAC i put in basic x into a pin? Thanks for ur help!!! ... Francisco Lobo...
Francisco Lobo
francisco@...
Jan 4, 2004 2:22 am
15012
... The built-in DAC function needs to be refreshed because charge is drawn off of the capacitor. If you had an ideal capacitor (zero leakage) and an infinite...
Hi all! I'm trying to build a circuit to control 110vac lights. I've gotten an opto-isolated diac and triac circuit built, but have given up on getting the...
... 60hz half cycle... If you need 256 phase control intensity levels in each 60Hz half cycle, the BX-24 control loop must spin at 256*120 Hz, minimum, or...
I am not a very advanced user, but what happens if you use the interrupt lines to get an input from a zero detection circuit that will detect when the phase...
Francisco Lobo
francisco@...
Jan 4, 2004 6:36 pm
15016
Sloan yopu could used a transistor in emitter follower configuration to give yourself extra current gain....
Hi Tom! Thanks for the info! Yeah, those are the same numbers I came up with, and quickly figured it wouldn't work, although I almost got it working by using a...
... I said that, presumptuously to be sure, since an optocoupler and a diac don't normally find themselves together. A diac is, essentially, two 35volt zeners...
Hi Tom! It's an opto-isolator specifically for driving a triac from logic levels. Basically, turn on the LED, and the diac turns on the triac. Some of the ...
Commonly used Tom..I have used 100's of the MOC3021 which is an optically coupled triac driver which works very well in dimming and motor speed applications. ...
... well in dimming... Yes, but as a pulse device to trigger another triac, not as a phase-control dimmer by varying its LED current, right? I can't find an ...
Hi triac light dimmer people, check out this link: http://jem.dhs.org/~ed/ece499/ I have built a box that pulse width modulates the LED in the OPTO - ISO you...
Michael Fowler
mikef@...
Jan 5, 2004 6:18 pm
15026
It won't work that way Sloan. Its digital, so the triac is either on or off. Types like the MOC3021 will turn on the triac (if the LED current is sufficient)...
... gate bias ... The more light, the sooner it would turn-on. My guess is that appears to work because, at lower opto LED currents, the line voltage must...
hey guys, this is absolutely glorious to see an actual group for the bx....Well i have a question, I just got a laptop with no serial ports, does anyone know...
You might want to use a digital pot (dallas) and interface it with an analog dimmer :) ... Francisco Lobo de la Garza CEO/Director General movic Records ...
Francisco Lobo
francisco@...
Jan 6, 2004 12:31 am
15031
I had... And it works OK.... I am using actually virtual PC on a mac to emulate windows with OSX on the mac side... I use a USB interface made by Keyspan, i...
Francisco Lobo
francisco@...
Jan 6, 2004 12:34 am
15032
... OSX on ... the ... It ... I just got a usb to serial today but got some errors, Guy at store says USB 2 get to the house its 1.1 and for some PDA ...
... OSX on ... the ... It ... I just got a usb to serial today but got some errors, Guy at store says USB 2 get to the house its 1.1 and for some PDA ...
I am using USB 1.1, but you never know, i'l try better quality USB-SERIAL, rather than speed, cause i think the drivers make all the diference, as long as the...
Francisco Lobo
francisco@...
Jan 6, 2004 1:16 am
15035
... the ... errors ... done ... virtualPC, ... USB to ... port i ... going for the better quality now thought i could get by with it looks like not going...
hello there i have a problem i need to convert something i wrote useing parallax's Basic Stamp 2 and i want to beable to use it useing a Basic X chip, below is...
... One could simply do a direct translation (as closely as it can be done, that is) or one could write better structured code that utilizes the more modern...
Thanks again Frank for your prompt reply. That answers my question and I will be placing my first order shortly. One other question, how do I stop all the...
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