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    7805 and AC-Adapter

    Keep your patience Hero. ;D
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    7805 and AC-Adapter

    I assume you can learn the thory somewhere else, so to summarise what has been said, no you will not burn your regulator because your trafo is 1.5A rated, assuming your circuit uses less than 1.5A.
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    Cross Reference for PCR 606J

    It is so annoying, these Chinese-made devices with non-standard part numbers. Anyway, apparently the PCR606 is a thyristor in a T0-92 package with the following key specs: V(DRM): : 400 v V(RRM) : 400 v IT(RMS) : 0.8 A I(GT) :  V(AK)=7V Max IGT=200 uA V : 1.7 V Try this...
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    Help me >>>Circuit Diagram for 12vdc inverted to 220vac generate sinewave

    Sounds like a typical project specification. "We want a device that does everything, we will tell you new requirements one day before prototyping, it needs to be smaller than a matchbox, have zero power consumption, we want it yesterday, and for free."
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    Project Help / Advice

    bugmenot, Here is the reply that I received: Let me know if you want me to ask him anything else. Regards, Alex
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    Help me >>>Circuit Diagram for 12vdc inverted to 220vac generate sinewave

    Hi, How much power do you want the converter to be able to give you? What are you going to power with it? Regards, Alex
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    220 to 110 V convertor advice

    Hi, Could you please post a picture of the actual components? What is this exactly? I can't make much sense from the drawing. Did your 220 to 110 V converter break? Regards, Alex
  8. A

    analog ammeter

    You need to tell us exactly what you are required to do Oguz_ehm.
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    analog ammeter

    The ammeter does not really require any resistors to work. It can be just a piece of wire. You might need resistors to increase its range. Another thing you can do is buy a ready analogue volt meter and connect it across a resistor of 1 Ohm. Then the display will be in Amperes. See diagram...
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    analog ammeter

    Ok. Very surprised they asked you to build an analogue current meter at college. Is it for DC or AC? A simple current meter could have a coil of wire and a needle attached on a magnet. http://isaac.exploratorium.edu/~pauld/summer_institute/summer_day15current/ammeter.html...
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    analog ammeter

    You need to tell us more about your project. Do you need to build an analogue current meter yourself? Buy one?
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    analog ammeter

    What are you required to do in this project?
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    Project Help / Advice

    Good, glad you are getting your head around this. These platforms are very powerful not very different than a normal PC or laptop. Anyway, a friend of mine, enthusiastic about DSP, suggested Texas Instruments as a leader in DSP platforms. Have a look at their DSP portfolio. FPGAs. Unless you...
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    IR Thermometer

    That's a great 'poor-mas' sensor idea. Thanks for sharing.
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    A computer power supply unit component missing

    R66 is the name of the component as far as the schematic is concerned. R66 means that this is a resistor, number 66 on the schematic. Where did you get R22 from? That is clearly R66. If your component was not there initially then you should not place it because it is missing! Sometimes, it is...
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    Project Help / Advice

    There are really tiny PCs, smaller and lighter than the board in your link. Anyway, if its for an academic exercise then you should go with something more DIY. There is an intermediate solution, embedded development platforms. You can try googling that. I have asked an ex-lecturer of mine, he...
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    Brightest LEDs on the planet?

    Daylight bulbs are amazing, a pure bliss to the eye in an electronics lab. The only issue is that the eye is not so sensitive to that light so maybe you need a few more tubes. If I have daylight tubes on and then change to warm white my eyes hurt. I think they are great, you should try them...
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    Limiting Mains current.

    And the smaller IGBTS...I also have these in half-bridge style with two devices per package. Bear in mind, some of the smaller IGBT units have one of the two unit toast. This is a SIEMENS BSM75GAL120DN2...
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    Limiting Mains current.

    Riccardo, Here are some pics of the single big IGBTS. They are these: http://www.mitsubishichips.com/Global/content/product/power/powermod/igbtmod/hmd/cm400ha-34h_e.pdf 400A 1700V and 800A pulsed. Regards, Alex
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    Project Help / Advice

    I would recommend a micro PC motherboard and a high resolution usb camera. You can do all your software development on a very high level language like C# under Windows embedded. Regarding RX/TX, I am sure there are long range modules that can plug say in your serial port. Same for GPS modules...
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