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  1. kellys_eye

    DC Actuator problem

    Could be the physical positioning of the limit switch. Could be contact bounce in the limit switch. Try replacing the limit switch and see what happens.
  2. kellys_eye

    Current limiting in a CC/CV power supply

    ...when operated within their current limits.
  3. kellys_eye

    Count 1s in PROM

    Have you got a 'proper' schematic?
  4. kellys_eye

    Current limiting in a CC/CV power supply

    Efficiency is often a trade-off of other specifications. SMPS technology is the obvious for high efficiency but they require careful filtering of the output and have (usually) a poor response to transient requests i.e. have difficulty tracking fast-changing loads and poor ripple unless VERY...
  5. kellys_eye

    Current limiting in a CC/CV power supply

    All regulated power supplies are 'constant voltage' - that's what they are meant to do, regulate the voltage. The output voltage is maintained steady (constant) despite variations of the input. The current output is as much as the power supply can deliver unless you design a limiter as part of...
  6. kellys_eye

    Count 1s in PROM

    Yes, but is your circuit registering the FIRST location (0000) since you state that it requires 4 clock pulses to get to the first P/S shift output. Upload your schematic.
  7. kellys_eye

    ST. VN05N component

    By using the search function in many data sheet sites you can get lists of similar devices - as this link shows: http://category.alldatasheet.com/index.jsp?sSearchword=HIGH%20SIDE%20SMART%20POWER but you also have to check the spec of the original device and ensure the replacement offers AT...
  8. kellys_eye

    Crimp connectors

    The crimps shown above might not offer as secure a crimp as you require given they are usually rated for 0.5mm to 1.5mm C.S.A wires. There are 'bootlace ferrules' that accept smaller diameter wires but you'd have to cut the 'boot' off and heatshrink the crimped joint.
  9. kellys_eye

    Count 1s in PROM

    Recall that the count starts at 0 and ends at 15, not from 1 to 16
  10. kellys_eye

    Identify smd inductor

    That particular inductor looks, to me, to be part of a small SMPS converter circuit - shorting it will destroy the controller. Remove it. It's likely to have only a few turns so you can unwind it and, if you find some similar wire, rewind it (same number of turns).
  11. kellys_eye

    Board repair help

    The strips appear to be solder masked lines over a large plain copper land - to me it's a cheap way to increase the current handling capacity of the copper pad. Had it been a fully soldered pad I doubt it would have disintegrated in the way it did.
  12. kellys_eye

    Home theater subwoofer power supply fault

    The relay that activates the main transformer is powered by the standby supply which itself is powered through fuse 1906 and developed by the circuitry associated with the capacitive dropper (2908/2718), rectifiers and a circuit that drives a push-pull arrangement around transformer 5904...
  13. kellys_eye

    Home theater subwoofer power supply fault

    Simple carbonation from the shorting of the leads (copper under the solder). If you shorted 'properly' you'd have blown the mains lead input fuse (if fitted) or the external circuit breaker.
  14. kellys_eye

    One cell power bank troubleshoot

    No. The device measures the input voltage and if it is above 4.3V it starts the charging process and pin 3 (CHRG) is pulled low, illuminating the LED. The resistor on pin 8 (PROG) sets the charge rate. The battery - connected to pin 5 - is monitored for its terminal voltage and charging...
  15. kellys_eye

    Clothes dryer fault

    Why not? Fossil fuel energy has lifted billions out of poverty and strife and would continue to do so if politics weren't corrupting the facts. Advocates of electric vehicles seem to forget that they need ELECTRICITY to work and that the majority of it is, and for the foreseeable future will...
  16. kellys_eye

    ECM - Jeep computer - help IDing the motherboard please.

    Resistors, capacitors and semiconductors, with a few inductors thrown in. Identifying parts to what purpose? What do you hope to glean from this process?
  17. kellys_eye

    Multimeter Spec

    Doesn't really matter what 'new' instrument is purchased..... unless you have the means to PROVE it's accuracy all you have is the manufacturers 'guarantee' that it is supplied and calibrated as claimed. Even purchasing a 'reference' comes with the same caveats. It's almost infinitely deep...
  18. kellys_eye

    Error accessing file(s) on windows network share

    Dontcha just love Windows........... not.
  19. kellys_eye

    magnetek invert e 6400 switch to battery lights came on for a short time went off cannot get them s

    Sure the battery is ok? It may measure correctly without a load on it but the voltage can fall dramatically if it's not properly charged and it has a load - like the inverter - attached. If the battery has a low charge then the input current to the inverter will increase as the battery...
  20. kellys_eye

    K10A60D Transistor

    The IC is very unlikely to require programming. It's most likely a pre-driver and/or complete SMPS system-on-a-chip. Do you know what/where the IC's output is going/supplying? If you can identify which part of the circuit is getting the output of that IC then it's possible to make checks to...
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