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  1. Minder

    Can anyone help identify this socket? (resolved)

    Appears to be a Hirose component. Search Digikey, they carry Hirose. M.
  2. Minder

    Model Railway elevator

    There is also miniature prox sensors such as Honeywell S400 series, but system details need to be known? M.
  3. Minder

    PIC 12F675 PULSE COUNTING

    Wouldn't it be simpler to go with a Pic that has a the ability to use a 32Khz clock xtal for TMR1 this gives a precise 1 sec pulse or division thereof. M.
  4. Minder

    Model Railway elevator

    What type of motors are the actuators using? The fact it is operating very slowly I believe you may get away with a miniature sensor of some kind, the problem is that your controller is going to have to have some way of programming a certain level. You also don't mention detail as to what the...
  5. Minder

    Is this actuator really 12VDC? Could it be 24V?

    The effect that limits the current in a DC motor is the generated back EMF, which with no load almost reaches the applied voltage, obviously if the generated voltage was equal there would be no current (torque). When a load is applied the motor, rpm is reduced and hence increasing the voltage...
  6. Minder

    I'm fairly new to electronics, but have some idea,BUT how do these work?

    An aerial can be tuned to a particular selective frequency, as in tuned to a particular TV ch freq for e.g. look up dipole antenna. A transistor radio has a fairly broadband antenna and is not tuned to one particular frequency, it receives a wide spectrum of frequencies and feeds the tuned...
  7. Minder

    The Day The Symbol Changed

    On Schematic capture and PCB design s/w such as Kicad, I use the exact same symbol throughout, the Logic Common symbol, if the circuit consists of systems isolated from each other, the label itself is enough to identify the various commons for the board capture. M.
  8. Minder

    The Day The Symbol Changed

    The NEC and NFPA79 spell it out the IEC symbols. The IEC 5020 is for equipotential bonding of equipment and does not indicate in and of itself that it is earth grounded. In UK for example the term Earth Conductor is used as opposed to N.A. where Ground is used for both earth grounded and...
  9. Minder

    [novice] MOSFET not turning on

    Why not select a Logic level Mosfet? M.
  10. Minder

    dimmers?

    If you do a search for hot wire foam cutters there are many out there that are using the Triac dimmer in the primary, having said that, I made one for mine and use it in the secondary, there is not that much to them and easily constructed. M.
  11. Minder

    UART

    UART, Asynchronous = Not synchronised by a shared signal such as clock and proceeding independently. Opposite: synchronous. A communications system in which data transmission may start at anytime and is indicated by a start bit, e.g. EIA-232. A data byte (or other element defined by the...
  12. Minder

    Clueless Noob - A/C to DC switch

    So you want to create a 15w supply from a 8w supply? M.
  13. Minder

    Need advice on my first circuit. >Transistor motor controller<

    Personally I would have used a 'standard' H-Bridge with Opto isolators to transition from the 5 to 12v. Run it through a simulator like LT spice and see the results of your set up! M.
  14. Minder

    HOW DOT PRINT PRINTER WORK

    For real fun look up Teletype printer and paper tape punch! Doesn't seem that long ago it was programming/running CNC machines. M.
  15. Minder

    PIC12f1501 used to turn a servo

    This is in Russian but the code is English. http://we.easyelectronics.ru/zaman/pic12f683-turnigy-tg9.html What PWM freq are you using? M.
  16. Minder

    About transformer?

    Depends what final voltage you need, to use the LM317 you will need DC, no good for regulating AC. The Resultant DC from 18v will be around 25vdc after rectification and smoothing. Windings that can be paralleled are generally wound bifilar so they come out close to identical. If you want to...
  17. Minder

    PLEASE HELP ID THIS!!

    He is being bugged!:p M.
  18. Minder

    Resources for information on Mosfets.

    Also one of the leaders a long time in the field is International Rectifier, IR, I fortunately kept many of their early application and data books. Also help here http://tahmidmc.blogspot.ca/2013/01/using-high-low-side-driver-ir2110-with.html M.
  19. Minder

    Zener diode as volt dropping resistor??

    I have done this on a mobile crane generator that produced 240vdc, I used a zener and a WW resistor for an economical 12v circuit supply but it is only good for very low demand circuits, otherwise the resistor required is very large and inefficient. M.
  20. Minder

    how to learn i2c programing

    Too vague!! In what type of arena? Pic or ? Study any of the IC requirements that operate using I2c, most have a choice of address and form of date sent and/or received. M.
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