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  1. kellys_eye

    Parkside PLG 20 A1 4.5A Battery Charger fix

    D1 is, in my opinion, the 'flyback rectifier' and not a zener. Measure the DC across the bridge rectifier (+ and - terminals) for around 310V DC (steady, assuming a 230V AC input?). If you have a steady voltage at the bridge rectifier (same at the +/- terminals of that big smoothing capacitor)...
  2. kellys_eye

    Dyson V8 bypass sensors and alternative power supply

    Vacuum is related to power and 12A (even at 12V) only equates to <150 watts. Small in comparison to your standard (mains powered) vacuum that might consume 1000W or more. Ok, that doesn't count for the efficiency of the 'cyclone' (or whatever) arrangement used to suck the dirt up but you still...
  3. kellys_eye

    Identify Vintage International Rectifier Part?

    Long tailed pair? Slap a scope on the input/output.
  4. kellys_eye

    Identify Vintage International Rectifier Part?

    Nope
  5. kellys_eye

    electric kettle shorts

    If you want to repair it then do as I said earlier - buy a new element. Assuming you can FIND a replacement you might reconsider the advice to purchase a new one when you see the price (when delivery is added). So, 'repair' AND 'sales' - both are equally acceptable in some cases.
  6. kellys_eye

    electric kettle shorts

    The element is compromised. Fit a new element or (since the cost will be lower) buy a new kettle.
  7. kellys_eye

    Rutland ESB57 Energiser low voltage help! (2)

    The energy level is pursuant to the value of the capacitor and the circuitry that detects a 'correct level' pulse would not get the right signal and thereby reports a 'low battery' as the alternative cause. Fit the right value capacitor.
  8. kellys_eye

    Need help about switch power supply circuit

    Woah...! Check your meter against a known GOOD supply voltage first then. Mains voltage is quite heavily regulated in many countries and must meet standards for voltage and frequency (many, not ALL countries). Any assumptions/design must be made on the premise that the input supply is as it...
  9. kellys_eye

    Tube bias circuit

    Circuit 'ground' in such cases is inevitably the metal chassis but, in any case, should be taken from the negative of the main supply decoupling (smoothing) capacitor if the structure doesn't have a metal chassis. The 14uF/1kV capacitor in this case. Please also ensure your meter is rated to...
  10. kellys_eye

    Need help about switch power supply circuit

    There are separate GND/GDD symbols such that, assuming they are adhered to, will give the required safe isolation. I would suggest, as above, that the phase relationship (feedback) is incorrect.
  11. kellys_eye

    Problem in charging 450v 680uf capacitors at the same time

    Show your schematic. Connecting a DC supply to a capacitor (using the correct polarity) will charge that capacitor to the applied voltage (in time, according to any circuit resistance and the value of the capacitor). If the capacitors are not charging then you either haven't connected them or...
  12. kellys_eye

    IPM

    See if the company offers sample products (many do) and register to obtain one.
  13. kellys_eye

    Headphone cable/wire identification & where to get it to repair headphones

    There has to be some cheap'n'cheerful headphones in the local markets that can donate a replacement cable? If not then any two-core screened cable can be used but you'll have to make some kind of 'junction' to split at the neck (chest) level and take another length to each earpiece. You don't...
  14. kellys_eye

    I want to make a speed limiter for my motorcycle

    What about a physical limit on the throttle?
  15. kellys_eye

    Espresso PCB Transformer

    That's a 'bog standard' mains transformer - in your case a 115V primary and an 18V secondary and providing the replacement fits physically (pin arrangement for primary/secondary etc) then either will work. You could even mount the transformer elsewhere and take flying leads (insulated at the...
  16. kellys_eye

    Men of the forum - help me w engagement ring

    A 'real doll' won't cost you that much.....
  17. kellys_eye

    Is it possible to build an homemade mobile signal amplifier?

    It's all moving to wifi calling nowadays.
  18. kellys_eye

    old car stereo LCD backlight

    Wow! I offer (locally only) a fixed-fee repair service for £25 (30 bucks) on a no-fix, no-fee basis and parts at cost.
  19. kellys_eye

    old car stereo LCD backlight

    Any editing I do is for spelling and/or clarification, nothing else. Although the word may be 'non standard' it is in general use and that the Cambridge Dictionary includes it gives it some legitimacy. But this really isn't a place to discuss language. If you find the word objectionable then...
  20. kellys_eye

    E-Bike front light Power supply question

    The light is faulty - more likely is the fact that the manufacturers over-stated the lumens (a common issue). Return the item as defective and/or get a different one.
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