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  1. kellys_eye

    Artificial Intelligence

    Are you worried? Do you believe the scaremongering of imminent human demise if AI gets its way? What on earth is the reality behind it all? Open forum discussion anyone?
  2. kellys_eye

    will wallwart blow my machine?

    Maybe not exactly futile but the concept of a SMPS is driving components to their limits/saturation which stresses inevitably take their toll. This would be less of an issue if the bean counters weren't the driving force behind their design. Engineers will always find ways to 'make it work'...
  3. kellys_eye

    WallWart conversion...

    Buy the right adapter. Most things you touch (going by previous examples) turn to sh*t which, whilst your inevitable financial loss doesn't really bother me, your grasp of electrics/electronics is so irredeemably lacking that you do yourself no favours and tend to waste a lot of our time by...
  4. kellys_eye

    Rs233 make TXD high just using other pins, I don't want to hook up any serial input

    To what purpose? The transmitter can be 'active' or 'inactive' by using the /CS line. i.e. ground the CS pin to transmit, leave open to stop.
  5. kellys_eye

    Help identifying a transistor

    The most 'obvious' issue (to me) seems to be this area: the pins are clearly 'unconnected'. Desolder, clean and refit.
  6. kellys_eye

    Parking sensor circuit board

    Gate the audio (buzzer) signal using an inverted signal from the red light. Whenever the red light is off the audio should be muted.
  7. kellys_eye

    Ebike battery

    Your bike battery is stated as being 1000W and your chosen charger/pack is rated at ~100W therefore it would only recharge your bike by 10%. At that price you'd be better off purchasing a second bike battery and swapping the battery out when it's discharged.
  8. kellys_eye

    Si5351 as ultrasonic driver/transmitter

    No. You'd need to buffer the signal. How accurately do you need to adjust the frequency? The device needs to be programmed using its I2C interfacce and therefore require 'running' software to constantly update the device registers to change the frequency. Probably easier to use a simple 4MHz...
  9. kellys_eye

    Ebike battery

    Amazon is replete with bog standard 48V LiOn chargers so take your pick. Powering the charger via an inverter doesn't seem a very reliable or efficient process so look to a Boost converter/charger with a 48V output that accepts a 12V DC input. They do exist and, surprisingly, are cheaper than...
  10. kellys_eye

    Electronics sourcing help

    I've donated stuff FOC on many occasions but there are still times when simply making a list and ordering what you need straight to your door is simpler, quicker and more productive. From a box of 'random crap' you're unlikely to get even 5% of the parts you need for a SPECIFIC project. On the...
  11. kellys_eye

    Trying to identify a (zener?) diode

    If it tests like a diode then it's probably just fine - irrespective of its potential breakdown (zener) voltage. Do you have the schematic of the power supply or pictures of it and/or the circuit board?
  12. kellys_eye

    Hunter Ceiling Fan Receiver

    How are you defining 'pin 1'? If you wish to receive the right advice you need to be more clear on how you define things. If, as I currently understand, pin 1 is the M1 terminal of the triac then the 'sizzling' is ether due to improper soldering or there's an external short and the triac is...
  13. kellys_eye

    What is this component please help me

    It's packaged like a varicap diode - not sure of that's relevant or not - but the schematic would reveal all. Is there a reason for wanting to know? i.e. curiosity or in need of replacement?
  14. kellys_eye

    Pioneer DDJ SR - identify components

    No idea what the y5V designation means in terms of that replacement part - could be physical size??? Dunno. As long as it fits it'll work.
  15. kellys_eye

    Korg LP-350 Low Volume Problem

    No it isn't.
  16. kellys_eye

    Pioneer DDJ SR - identify components

    C517 is 1uF 16V (non-polarised). @bertus suggests the circuit to be oscillator-based and I would concur - it seems as if physically touching the plate causes the oscillator to change frequency which is detected and acted upon. This is, of course, software-based so we ca't do anything with that...
  17. kellys_eye

    Pioneer DDJ SR - identify components

    ..which is too small to read. If it is simply corrosion then unless the corroded part has been totally lost then clewaning it should restore operation. Either way, you can simply replace the corroded parts 1 for 1 and the schematic will identify their values.
  18. kellys_eye

    Looking for advice on cap replacement or board schematic for an LG 24GN600

    Not really - the transients may well affect other parts of the circuitry causing weird faults in a digital sense but it's not going to harm the PSU. You'll be surprised how much heat those SMD devices can withstand. There are YT video tutorials on removing components and a capacitor like that...
  19. kellys_eye

    Help me ID Component

    It's usually the IC fails first and takes the bridge rectifier out immediately. Faster than the fuse can blow! But the fuse ends up blowing anyway.
  20. kellys_eye

    Looking for advice on cap replacement or board schematic for an LG 24GN600

    Those are called MLCC capacitors and do have a 'reputation' for failing 'short-circuit'. In many situations those types of capacitor are used as supply decoupling devices (remove transients from supply lines) hence the reason the circuit works with it out of circuit BUT you are right to...
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