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  1. OLIVE2222

    What is this 5 pin part? Factory car stereo.

    They are stocked at mouser http://be.mouser.com/Search/Refine.aspx?Keyword=BA00CC0 Olivier
  2. OLIVE2222

    improvised ignition system

    Hi bcredneck and welcome to this forum! i don't know about the hall sensor, but for the CDI you can have a look at the product here under http://www.designnotes.com/downloads/K2543_Manual.pdf It's on kit form, easy to repair and even easy to reproduce. Olivier
  3. OLIVE2222

    Thermal vias in thermal pad of IC?

    Yes that's it the solder paste island are on the 4 corner for sure. it' s a common (and needed) practice to have such complex solder mask. see the figure 13 here under http://blogs.mentor.com/tom-hausherr/blog/2011/04/06/pcb-design-perfection-starts-in-the-cad-library-part-15-qfn/ Olivier
  4. OLIVE2222

    Thermal vias in thermal pad of IC?

    You can place thermal pad under via knowing that solder paste are not placed on the whole thermal pad surface but is spread in 4 (in this case) the room between each solder paste "island" is used to place via's (this avoid the soldering penetration mentionned by Harald Kapp) check the PCB...
  5. OLIVE2222

    Reliable 18v to 5v USB voltage converter.

    Let's summarize: -Not a car application, no needs for TVS -Your proposal http://www.ebay.com/itm/MC34063-DC-D...item417600b394 seems OK so. -Car lighter type are not suitable (without mods) -Adding a polyfuse is a good habit Olivier
  6. OLIVE2222

    Reliable 18v to 5v USB voltage converter.

    You can maybe go for a Belkin product, those guys have a good rep http://www.amazon.com/BELKIN-F8Z445ttP-F8Z445ea-Belkin-Charger/dp/B0047T79TA Olivier
  7. OLIVE2222

    Reliable 18v to 5v USB voltage converter.

    I will picture it. Ceramic caps are reliable, the problem here is the lacks or transient voltage suppressor at the input. In cars you must deal with cold-crank and Load-Dump Transients ! Olivier
  8. OLIVE2222

    Reliable 18v to 5v USB voltage converter.

    Hi, I bought exactly the same Ebay down converter and I can tell you that they don't least more than few months. Indeed Arduino Ebay boards, relay boards and others works quite well but power supplies need more demanding components like power diodes, power FETs good capacitors...For mass...
  9. OLIVE2222

    New To Stepper Motors

    and the practical aspect http://www.sm0vpo.com/_pdf/kitsrus_kits/K179.PDF
  10. OLIVE2222

    Splicing HDMI Cable?

    Yes Ian nice soldering work will be at least as good as UR splices but you need to be fast to avoid insulation melting. UR splices are probably suggested because they don't need any soldering skills. Olivier
  11. OLIVE2222

    AC socket

    Those ones are very popular in lighting systems http://be01.rs-online.com/web/p/mains-connectors/7134343/ http://docs-europe.electrocomponents.com/webdocs/0e8b/0900766b80e8b114.pdf Similar product should be available at local electrical supplies store. Olivier
  12. OLIVE2222

    Filtering/Voltage Regulation of Pulse Oximeter

    here under a pretty good ready http://www.freescale.com/files/32bit/doc/app_note/AN4327.pdf Olivier
  13. OLIVE2222

    Splicing HDMI Cable?

    Dear Ian, Seems possible according to link here under: http://hdtvpicturequality.blogspot.be/2010/02/how-do-i-repair-broken-hdmi-cable-end.html looks to be exactly the same issue as yours. Olivier
  14. OLIVE2222

    Op Amps

    Just mean "Welcome on board" in Italian :-)
  15. OLIVE2222

    Op Amps

    Benvenuti a bordo! Chris (CDRIVE) sentence used without permission
  16. OLIVE2222

    Op Amps

    Here under a useful Nitrox analyzer article. The design use a e Teledyne R-17D oxygen sensor. https://ia601503.us.archive.org/27/items/circuit-cellar-174/circuit-cellar-174.pdf Olivier
  17. OLIVE2222

    Making an FM Transmitter

    Yes you can use a 2N3904
  18. OLIVE2222

    Op Amps

    All sensor based on the same technology should work like that. The current is converted to voltage by the (internal or external) load resistor. You can maybe go for a mockup to validate that; By the way how do you intend to calibrate the sensor conditioner ? Olivier
  19. OLIVE2222

    Op Amps

    here a schematic of the sensor and the load (100 ohms here) I am talking about. It's look like few manufacturers include the load in the sensor itself and state the output in mV so. http://touchstonesemi.com/articles/nanopower-circuit-design-in-low-frequency-sensor-applications Olivier
  20. OLIVE2222

    Op Amps

    Here an AN for an oxygen sensor. The output is specify as a current, when stated as voltage a load is specified, intrinsically the are current source to me. In the AN depending on the model we have 30 or 50mV full scale on 10K. http://www.alphasense.com/industrial-sensors/pdf/AAN_003.pdf...
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