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<...> <...> Well, since I was primarily only interested in audio, that wasn't any big deal... Because this was a bunch of years ago, when the parts you refer to weren't available, and I doubt that I

It's similar but not the same. The intersil part is only 300kHz max. I doubt you get the intersil part for free so why bother? I dunno when i have time for designing the generator and making a pcb,

Is this the same sort of part as the Intersil (?) 8038? I built a generator around one of those some years back, it was fairly simple, and it's very flexible.

Yes. You have to reach a certain voltage before the trigger device (DIAC or whatever) will function...

look at the input. approximate the signals with a sine and calculate the phase offset. there will be some. I never hooked one up on a wattmeter / phase offset meter, would be nice to know.. (but i

there are 2 maxim ICS for such a thing. it are 4 digit 25Mhz counter, available for LED or LCD. icm7225 is for led and 7224 for lcd. I'm not sure if it can count down, maybe you find another IC which

I have two max038 lying around which wait only for me making a schematic for a generator. these are sine/triangle/square wave generators that work up to 20Mhz. there is a cheaper version that works to

No, the main voltage is not distorted. if you measute before the triac there is a phase offset for every phase angle not 0 or 2*pi (more or less). Then where does the reactive power in a triac circuit

Hello Everyone, I'd like to build a signal generator that is not too professional but good enough for general use i.e. that can produce sine, sawtooth and square waveforms in 1-50kHz range or so with

I had a need to program some 64Kx8 Flash devices so I decided to hook up an ATmega16 and use it to read and write the Flash. I put together a quick web page describing what I did including links to

Members, Can you pls let me know that on practical basis -when do we use servo otors,and when stepper motors...What is the exact difference in both with the dc motors?cost wise(INR) I had gone through

Can anyone direct me to a 4 to 8 digit UP/DOWN counter, preferably with LCD display, needing only a 5 VDC supply? Red Lion made a "Super Sub-Cub" which met these requirements, but they appear to have

<stefan_trethan@g...> wrote: going dimmer voltage...

You are probably right. One thing to watch out for is the stray capacitance of digitally variable resistors and multiplexers which can affect your filtering. Keith.

yes, true, the effect is not that much compared to 240Veff line voltage... also you need sufficient inductance and maybe filtering for EMC. One thing to keep in mind is that a system using phase angle

dunno... will have to actually try it when i need it. i thought a scr is current triggered, not voltage triggered, is that right? If you think it through with two seperate SCRs it looks like it will

Not sure if a triac "creates" a phase offset between voltage and current. AFAIK, a triac only PWM's the input voltage/current ... and that's what "controls" the brightness of the lamp (heat from the

I think THAT part is because even at "full brightness" ... the phase shift mechanism of most dimmers *still* does not have enough shift to shift the trigger point all the way to "zero" (IE: the lamp

Seems to me that with any kind of a triac circuit you're *always* going to have a bit of a notch, in that the applied voltage has to rise to a certain point before triggering can take place... This is

You're right, A DC voltage applied to the gate will allow the TRIAC to conduct in both directions as long as the applied voltage gets over the threshold voltage. I guess I have just never used one