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  1. OLIVE2222

    Automatic TV remote activation

    Another solution is to ask to a repairman (not a sales men!) if there is "hidden/maintenance menu" on your particular TV. In those menu maybe you can disable the sleep. A friend of mine also bought a super high end programmable remote control. I will ask if automated action's via timer are...
  2. OLIVE2222

    Portable LCD for Xbox 360

    First thanks for the pictures and for the google search ! I never do such kind of hacking but we can reasonably assume that the scrapped display is a VGA type, so the main job is to find out the pinout of the connector (the one at the end of the grey flat cable) and to connect it the XBOX...
  3. OLIVE2222

    Very Small Transformer

    Module form for PCB mounting is available from RECOM http://www.recom-international.com/pdf/Powerline-AC-DC/RAC03-SC.pdf available at mouser.com
  4. OLIVE2222

    Help repair dj mixer

    The service manual is available here: http://elektrotanya.com/phonic_mx-300_sm.pdf/download.html But before opening it, is the mixer ever work correctly ? As you buy it new I guess yes, and is the warranty expired?
  5. OLIVE2222

    Very Small Transformer

    Power integrations is made switch mode power supply componants for this kind of application. They have many parts, I found one of those in a tiny Nokia wall plug adapter here just 2 links as example: http://www.powerint.com/sites/default/files/product-docs/an35.pdf...
  6. OLIVE2222

    Led amplifier help

    The amount of current is determined by the driver implemented on the decoder (can't read which one is used from the picture). Sure the track must be wide enought to allow the current flow, but it's not the main limiting part.
  7. OLIVE2222

    25 I/O and 2 x analogue gsm controller

    Hi, such a amount of I/O will indeed no be available of the shelf. I don't believe you can build something from scratch in a couple of week. you can have a look on the following links http://www.mikroe.com/eng/categories/view/19/gsm-gprs-tools/ http://www.olimex.com/dev/index.html for...
  8. OLIVE2222

    Led amplifier help

    Yes Simon the maths are correct but you must use a serie resistor in each branch of serialized led's. So 10 leds and a 200 ohms resistor will be OK. Giving a maximum of 50 leds (and 5 resistors) per channel. Indeed you must appply a margin 2/3 of the max. spec. is a good practice. Olivier
  9. OLIVE2222

    Led amplifier help

    Simon, Let's say you use 6 led's in serie with a 19V supply, mean 6*2.5vf = 15volts. R for 12mA = (19-15)/0.012 ~ 330R. Knowing the 12mA for each cluster you can set maximum 8 cluster in // (48 leds) without additional Mosfet on the decoder board! Olivier
  10. OLIVE2222

    Identifying mystery component

    It' probably a temperature dependant resistor used to limit the inrush curent. When powering the flowing current cause the resisitor to slowly decrease. Normally they used standard resistor color coding scheme.
  11. OLIVE2222

    Capacitor ID

    Hi Lyle, Mmmh, a yellow disk with few ohms and this marking is maybe not a capacitor but a thermal fuse. Can you post a sharp picture? Olivier
  12. OLIVE2222

    Led amplifier help

    Hi Simon, The Mosfet idea should work to drive your large leds pixels. The most efficient solution is to build pixels clusters with leds connected in serie then to parallelize them. This will limit the amount of current needed. So the higher the voltage the better. Laptops power supplies are...
  13. OLIVE2222

    can't find value of vintage equipment. Help!

    You can have a look on audiogon/marketplace: http://www.audiogon.com/cgia/fsb.pl by the way you stil need to acquire Marantz gear :)
  14. OLIVE2222

    DIY IC simulator

    Hi Justin, I feel that this product is what's you are looking for: http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en028600 It's a generic I2C/SPI.. interface connected to a PC via USB interface. For your Atmel development why don't use a JTAG...
  15. OLIVE2222

    Need help with transistor for Fan controller

    The faster will be one of the two spain one. Hong-kong, china, Taiwan will be slower, probably around 3 weeks. for the BD176 this one should be fast: http://www.ebay.com/itm/Transistor-BD176-Silicon-PNP-LOT-10-NEW-/300282730856?pt=LH_DefaultDomain_0&hash=item45ea3ed968
  16. OLIVE2222

    Cheaper cars?

    Well looks to be nice idea but not sure that my grandfather will be ok with that! Here a subsidiary or Renault car manufacturer (Dacia) find a way to reduce car cost. They put less electronic! mean less electrical motors, less control board, less cabling. I don' t have the figures but sure...
  17. OLIVE2222

    Need help with transistor for Fan controller

    You can go for a BD176, it' s a cross reference with the same pinout http://www.fairchildsemi.com/ds/BD/BD176.pdf and available in spain: http://www.diotronic.com/activos/componentes-discretos/transistores/trans-si-pnp-45v-3a-to126_r_23_3342.aspx and here...
  18. OLIVE2222

    Need help with transistor for Fan controller

    Be warned that Ebay is famous for they counterfeit parts ! many of them can be lower grade restamped semiconductors. better to source from an authorized dealer RS, mouser, Digikey, Farnell...
  19. OLIVE2222

    Need help with transistor for Fan controller

    The transistor are 2SB772 http://www.datasheetcatalog.org/datasheet2/6/0eliul85tgx0ued22kizqgctrd7y.pdf the are 3 amps rated, this look enough to drive a PC fan's, maybe a larger heatsink can help.
  20. OLIVE2222

    Urgent Help needed to get output of ac 5v 400hz frequency and current 500ma

    here under a link to an "An Easy Circuit For Use With LVDTs" http://www.mikesflightdeck.com/lvdts/lvdts.html
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