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DRC checks for errors that have been made generally caused by manual routing. Automatic routing will normally only come up with errors when it fails to route a track. When you manually route you may use an incorrect track width or clearances maybe to small. When DRC is run it will generate a report and from this report you can correct the errors.

That noise can be either the deguassing coils or the EHT. If you put the back of your hand against the screen and the hairs stand up then the EHT is working.

Firstly, life is a terminal disease. Secondly, walking outside is carcinogenic with all the vehicle fumes. The benzene in Unleaded fuel is 10 times more carcinogenic than the leaded fuel it replaced. Resin flux is generally a pine resin with additives. In its liquid form it is safe. It is only when it is heated or burnt it becomes dangeous. Any form of smoke is carcinogenic so as the others have said if you burn the flux and produce smoke then it MAY be dangerous. I have been sniffing flux fumes for 30 years and it hasn't affected me. heheheh hohohohho hahahahahh ::) :-\ See. Hasn't affected me at all.

Sounds like a great project. If the robots are going to be in the same plane with reference to each other then infra red would be good. Otherwise ultrsonic would be best. Ultra sonic can even go from room to room sometimes. If money isn't too much of an object and you want greater range them 900mhz or 2.4ghz radio modems would be pefect.

That really has nothing to do with his question. He wants to know the difference between inverters that convert 12VDC (I assume) to 120VAC or 240VAC. To answer your question you really must have a use in mind. You mention TVs and also Motors. Each one has totally different startup characteristics. The TV you would easily get away with a high frequency inverter but the motors surge current maybe too much for it. If weight is not of concern then I would go for the transformer based one. Having said that you can get some pretty hefty high frequency ones that can power most things. The benefit of a HF one is its stability to varying loads.

I woukld be looking for a dry joint or a cracked joint. If it has an IC it is probably a solid state device so there is probably no relay and would be working from an SCR or other switching device. Rip the case off and resolder all the joints without over heating them. Or spend $5 and buy a new one.

Personally I would never use lead free solder. It is crap and WILL cause fragile joints, I don't care what the manufacturers say. There is probably a reason why the defence forces around the world are exempt for RoHS of solder. Get some good old resin core solder and a small tin of resin flux.

Lucky we are thick skinned to. And before the rest of you try to be smart that doesn't translate into thick head. ;D

You may also put a resistor from the anode of the LED to GND to make sure the O/P of the AND gate is pulled low when you don't have both I/Ps high.

I think this device is advanced compared to a 7812. As Muhammad says there is no need for a transformer so compared to older style powersupply modules thats pretty advanced. And agricultural just means thrown together or bread boarded type construction. Maybe a bit of an Australianism.

Well I think this could be a bit of a language missunderstanding. I would probably consider this to be sophisticated in as much as it is all in one and not agricultural having 50 discrete components. I think Ante maybe confusing sophisticated with complex.

I personally would try and head towards the Military R&D area. Pick a relatively new technology and go down that path. Computer engineers and general hardware engineers a dime a dozen. Unless you are extremely outstanding in the field you will just be another sheep.

Just to be picky, EHT = Extra High Tension. generally around 26KV for a monitor. A very good reason to be carful when poking around inside. It really hurts. And can leave a little burnt pin hole in your finger. OUCH

Positioning an object to 25 to 30 ' isn't a problem at all. Trying to do it with an accuracy of 1/8" using RF I think you are delving into the fantasy world. In a previous job I had we did something very similar but the accurcay over that distance was about 6". We tried RF and ultrasonic and both gave a similar result. I think the only thing that would come close to that accuracy would be laser positioning.

How about in english

You haven't supplied enough info. What do you mean you don't get any power out of it? Do any of the LEDs light up? When it is on place the back of your hand against the screen and see if the hair on the back of your hand stands up, if it does then you have EHT. Can you smell any brown smells? Did it go bang? Any horizontal or vertical lines? Little dot in the centre of the screen? How did you measure .6V on the O/P transistor (if it is one)? Were you measuring the base, emitter or collector? If you can answer some of these we maybe able to help more.

A PIC is a micro controller made by Microchip. Have a look at their web site. www.microchip.com All the number just represent the type and model of the PIC. Different memory sizes and types as well.

Thanks. Looks like you can learn something new everyday.

Well I know a bit about hex fets and would never consider one to be a Thyristor.

You are welcome. Thats what we are here for.

I am assuming that you are talking about a recharger for the mouse as I have never heard of a mouse running of a plug pack before. If this is the case then all you need to do is go to Dick Smith or Jaycar and buy an 8V 500mA plug pack with the same output plug and you should be ok. One point to note though is that you haven't said if the 8V is AC or DC. This will make a huge difference and maybe also a huge plume of smoke. Ok, maybe a bit of an over kill. But it won't do it any good if you use the wrong one. Check the plug pack you have now and it should say 8V AC or DC.

Exactly what I was trying to say. Well done. That should get him out of the problem.