Search results

Search Forums New Posts
  1. kellys_eye

    Muff Pedal Distortion Repair

    Why were you testing the LED? They are usually very reliable. If the circuit wan't working properly it is unlikely to be the LED that caused the fault.....
  2. kellys_eye

    Resistor for motor to slow speed..

    You can only use a resistor if the motor is driving a steady, unchanging load as if the load changes then the resistance required to maintain a constant speed will also need to change. This is why motor speed control is normally done using a 'controller' rather than a simple resistor.
  3. kellys_eye

    How to delete text messages from my tracfone

    What model? Have you got/read the manual?
  4. kellys_eye

    JVC HR-S7955 not powering on since power cut/surge

    Your voltage stick will only detect AC - the input to the primary side of the PSU. DO you have a test meter to check the OUTPUT of the power supply section?
  5. kellys_eye

    Ion Pathfinder

    Where is the device getting the Bluetooth from? Is the audio output from the BT transmitter 'smooth' (i.e. unchanging)?
  6. kellys_eye

    Pioneer SX 850 Receiver

    Sounds as if one side of the output driver stage has failed. Can you get a service manual or schematic for it?
  7. kellys_eye

    10v -14v input to 12v regulator circuit high current

    As already mentioned you are not charging the batteries properly in the first place. You can't charge a 12V lead acid battery using 12V - you need (around) 14.4V to charge them properly. What are you actually powering from them? Most 12V equipment will tolerate a 10% over voltage and some...
  8. kellys_eye

    DC to DC converter on wind turbine system.

    You need to measure the voltage AND current from the turbines to make a sensible determination. As the manufacturer stated, the converters will need a minimum POWER input to operate correctly and power is the voltage multiplied by the current so if the first turbine/converter kicked in at 4V...
  9. kellys_eye

    No +5V for a switching mode power supply

    Did you load the outputs prior to testing? Such PSUs usually require a minimum load in order for the regulation circuitry to kick in. Is there a separate regulator device for the 5V output? If so, it could just be a simple matter of replacement.
  10. kellys_eye

    Like New NordicTrack Exercise Bike - Dead Console

    The GH16D doesn't have a version that exceeds 5V output so there's definitely something amiss there. If the output really IS as high as you measured then it most likely will have damaged circuitry elsewhere - probably 'fatally'.
  11. kellys_eye

    Power supply failure?

    Those projectors have many protection circuits built-in to them - they can operate when the lamp is blown, over heating, short-circuit, over-voltage etc. Check all the usual suspects first (as per the instruction manual) before condemning the power supply.
  12. kellys_eye

    Limiting resistor for High Power LED

    5V - 4.2V (average LED voltage) = 0.8 0.8/0.35 (volts to drop divided by current flow) = 2.2Ω resistor required. 0.35 x 0.35 x 2.2 (current squared times the resistance) = 0.27 - nearest wattage would be 0.5W. As above though - if you want longevity and reliability then get the correct driver.
  13. kellys_eye

    ZOTEK ZT102 Multimeter.

    Possibly - ISTR some indication that the 'rip-off' versions have some of the internals built to a far lower quality - such as fusing and trace separation etc. Caveat Emptor
  14. kellys_eye

    LED alarm clock

    Probably use an Arduino Nano driving an LED display and using an RTC module. https://www.ebay.co.uk/itm/Nano-V3-0-ATmega328P-Module-Board-Mini-USB-Cable-For-Arduino-Compatible-SY/282724081159?hash=item41d3ab1e07%3Am%3AmxjEtR80TwtqfXeiHZF-W3w&var=581977829387...
  15. kellys_eye

    ZOTEK ZT102 Multimeter.

    Looks like a rip-off of the original Anang AN8002 which, in itself, had rave reviews when it came out. https://www.markhennessy.co.uk/budget_multimeters/aneng_an8002.htm Not much difference in the price between the one you're looking at and the original Aneng device so perhaps you'd be better...
  16. kellys_eye

    Fruity loops track

    Ok, tell me the frequency and amplitude of the signal it is displaying.
  17. kellys_eye

    Water Damage on Keurig 2.0 Plus

    It's a coffee machine - sit it on top of a warm radiator for a day or so until it is thoroughly dry. THEN test it and report back on your findings. Of course, if you purchased this new then seek a claim under warranty.
  18. kellys_eye

    Fruity loops track

    1. That's not an oscilloscope - there's no way to take any useful measurement from the signal. 2. What's the actual POINT of this post?
  19. kellys_eye

    Help with Crosswalk Signal - Man Lights Up. Hand Does Not.

    You could take a small battery (9V) and a single resistor (1kΩ) and connect them to each LED sequentially (observing polarity of course). Each LED should light up - the one that doesn't may be breaking a series circuit preventing the rest from working.
  20. kellys_eye

    Can someone tell me what this part is called..

    Micro USB. Type B?
Top