Hi Sanvik,
You said in an earlier post that you are 'making this for myself', well have you considered how you will assemble it?. Unless you are having a one-off p.c.b. made and assembled professionally (with all the usual methods such as glue spots, solder paste, hot air reflow etc.), have you...
I'm surprised you say the indent is an extra MILLING operation and of extra cost - are you into mass production of panels?. If you are not into volume panel production then your machine shop is probably 'hand-crafting' the panels and has probably drilled the hole for each switch bush; then the...
BetaGamma - you are supposed to counterbore the REAR of the panel for the anti-rotation tab. That way all you see from the front panel is one neat hex nut (or a round knurled ring depending on the switch type)sitting flush on the first few turns of the thread. The other (lock) nut, the star...
200kW is a serious UPS: scaling up from smaller UPS may not be appropriate as smaller ones often use gel-cell lead acid. The most suitable battery technology will vary with the particular inverter float voltage which will determine the number of cells required. Without knowing the hold-up time...
Your original post stated you wanted to 'find the position of the metal object'. Are you effectively just trying to count how many are in a section (relatively easy) or are you trying to identify the position of a specific object? If you are trying to identify a specific object anywhere along...
Your requirement is very vague: no object dimensions or metal properties, position detection accuracy required, etc. If you can tag the unspecified objects, how about an RFID system?
The problem of buzz or hum is not caused by the fact that it's a *power supply transformer*. The transformer could be picking up fields from any mains wiring near where it's situated, but I suspect it's more likely that you have created some sort of a ground fault and the buzz is coming from the...
Quote: 'capable of handling a motor with a peak inrush current of 150-175 Amps and a continuous current of about 40 amps'
You have not stated what kind of power this motor requires: a.c., a.c. three phase or d.c. so it would help to know these requirements. At the very least it would be best...
They say never assume, but I assume your circuit includes an anti back emf diode across the coil to protect the switching device? If it does then I would be surprised if the release time is as short as the 1ms shown, since the spec would normally be measured just for the relay on its own...
You probably don't want to hear this but I spent some time modelling your circuit in Simetrix (a P-Spice program) and although I did not have a model of the LMV751 I used a slightly slower slew rate model of the LMV321. I found that the type of diode made virtually no diference to the amplitude...
There are two problems with your request that require much more detail:
Quote: "the signal out is pulse signal based on the flow"
1) You have not given details of the piezo 'alarm' as to whether this is just a simple sounder or something more sophisticated that can be programmed.
2) You don't...
As David has mentioned, the assembly area should have a demarcation line between ESD and non-ESD areas (usually 1 metre away from any sensitive areas). I was surprised you did not mention anti-static overalls or coats in this department. These are mandatory in our assembly areas: no ESD coat, no...
Vijay, soem questions:
How are you measuring ripple and have you analysed its frequency spectrum? I suspect least part of the ripple problem comes from the Vbat 110V supply - what generates this? This supply seems it may have a high level of residual ripple, as at 100% duty cycle you still have...
Your specification is unclear in a few areas:
"Control Signal : 3.3V DC PWM Signal (16 bit)" - 16 bit? PWM by definition is a single bit control signal at fixed frequency, but varying width. Are you producing a separate pulse train width from the value of a (variable) 16 bit word?
"Need L/C...
CMOS devices can enter destructive latch-up if the input voltage exceeds the supply voltage. This is because a parasitic diode is formed in the device substrate which short-circuits the power supply rail, the high current then causes the device to fail. Joining different pieces of equipment...
Quote:......after the cable is crimped in of course
IDC ribbon connections are not really crimped: the tines just cut through the wire insulation on each side, so not a wonderful contact. Has this comment from the manufacturer arisen because you have referred back about reliability problems?
Quote from Waross: There may be a finite time required for the signal pulses to stabilize in the internal circuits.
This is very much the case I was referring to. Even when rise times are not a factor, as the pulse width reduces to less than or equal to the tpd of the device, the output pulse...
I have found that with certain logic families there can be a problem when the pulse width of the data is similar to the tpd. Under these conditions it can be difficult to guarantee that all devices will always switch properly. I would say your 160MHz is getting close (6.25ns) and especially if...
Ok, language ambiguity: by "pick up" you mean literally, not meaning "detect" the presence of the spikes! In that case using a mains "transformer with the secondary coil removed" won't produce the sort of magnetic flux you would need in the large metal plate. This is because the magnetic circuit...
