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  1. Sunnysky

    AMP connector identification

    Looks like AMP makes it But you didn't show the business ends
  2. Sunnysky

    Quad PDB vs Octo PDB

    even 4x20 is marginal
  3. Sunnysky

    Experiment with finger vein scanner

    Better what ? scanning veins ? ( uses transmissive IR ) or finger scanner ? (uses refective imaging or capacitive) or better biometrics? or anything that uses CCD? You have not described your objective. edit ------ I just discovered Hitachi's vascular whitepaper...
  4. Sunnysky

    Drift issue in capacitance measurement, why?

    The SiS pins from the Op Amp are intended for "active guarding of the common signal path. WHen used asa low imoedance shield to shunt stray noise, but being at the same voltage and unity gain signal it's effective shield with any dielectric between will add no capacitance since the "guard"...
  5. Sunnysky

    Help Please! Wiring a 12-Bit Joystick Controller

    http://www.leobodnar.com/products/BU0836A/
  6. Sunnysky

    Active and resistive load current

    I agree, it is pointless for further discussion.
  7. Sunnysky

    1972 IBM Selectric II typewriter with stuck carriage

    The few times I used a Selectric were to play Moonlander between classes in 1970. Adjusting the Thrust level for each 10 sec of flight time , and trying not to make a crater which is calculated if you crash out if fuel.
  8. Sunnysky

    vehicle external projection using laser beam on outside environment

    start by reading the patent from which this text came.
  9. Sunnysky

    Active and resistive load current

    it seems pointless to describe current unless you define the load and voltage. Now the same current can be duplicated either way if one matched the active load resistance for linear operation if one needs reassurance of that. But more likely, active non-linear loads are useful not as fixed...
  10. Sunnysky

    Electronic System Design

    All the details can be supplied by a search engine with the "right" key words. or a better answer is possible only with a better question.
  11. Sunnysky

    Active and resistive load current

    https://en.m.wikipedia.org/wiki/Active_load
  12. Sunnysky

    Active and resistive load current

    At least I defined added meaningful content in each reply. Active and passives can deliver the same current if they have the same resitance. A fixed resistor is passive and Ohm's and Kirchoff's Laws apply. An active semiconductor controlled current will have some defined transfer function...
  13. Sunnysky

    Active and resistive load current

    same noun. different adjective. dont be silly.
  14. Sunnysky

    Electronic System Design

    I've designed complex systems, but then we hired Technical Writers to explain it in block diagrams. What would you like to know? It all starts with Input/Output/Process specs with all the environmental specs that must be written then tested (DVT). This includes EMC,(compatibility...
  15. Sunnysky

    Active and resistive load current

    "Active load" means using any semiconductor. You can easily find commerical active loads or simple circuits for special,purposes. Passive does not.
  16. Sunnysky

    Technics SA-828 Receiver from 70s- Is it worth trying to save this aging patient?

    best price http://www.ebay.ca/itm/1pair-Transistor-TOSHIBA-MT-200-2SB755-2SD845-B755-D845-/401025057889?hash=item5d5ef4c461:g:4dUAAOSw1DtXEbUp get two pair
  17. Sunnysky

    Technics SA-828 Receiver from 70s- Is it worth trying to save this aging patient?

    Q635&Q637 CE are both obvious shorts. The others are ok...
  18. Sunnysky

    Looking for components to make an IR controlled robot

    Range depends on Tx / Rx orientation, gain Tx Power, path loss, interference from reflections, etc and data rate. What range and data rate? IR Remote TV controllers can be made to go 30 m easily line of sight, but not mobile . For helicopters it works better as the sensors point downwards but...
  19. Sunnysky

    Power amplifier

    When designing "anything" , it helps to define you target output and inputs available then any time or frequency , environmental, or cost constraints. For wireless power, I prefer ferrite cores uses as "autotransformer" mode to stepup electric field ..couple within diameter of loop and stepdown...
  20. Sunnysky

    Powering 5050 RGB led strips

    9V Alkaline wont last long and these run of 12 V nominal read again 4 pads V+ is common to all RGB to bat+ any or all RGB pads to bat- try to use cordless drill battery 14.5V or 4 x 16850 LiPo cells each 3.6V
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