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  1. C

    serial regulator

    I read the circuit incorrectly and I have deleted my comments.
  2. C

    New 12v power circuit help

    Seems unusual for a trickle charge to be intelligent. The idea of a trickle charge is to deliver a small current without any restrictions. You can charge 18Ahr battery all the time at 500mA without it gassing.
  3. C

    serial regulator

    I read the circuit incorrectly and I have deleted my comments.
  4. C

    PWM Controller Troubles

    For $5.00, just buy another board. The parts will cost more than the module.
  5. C

    I require an oscilloscope

    Never buy a CRO under 10MHz. Buy dual trace.
  6. C

    Identifying a component

    100 is 10 microhenry 100 is 10 101 is 100 102 is 1,000 103 is 10,000 microhenry K is the tolerance - like 2%, 5% or 10% It is an inductor
  7. C

    I require an oscilloscope

    Always go for dual trace. All the things such as digital, storage, etc are a bonus. To see 8MHz you need 15MHz or more because the CRO starts to "taper off" (attenuate - the amplitude gets smaller than it really is) at 7MHz. You will have to look into the way they rate a digital CRO. Some...
  8. C

    Electrolytic Capacitor Vs Ceramic Capacitor

    Supply photo of 10u ceramic
  9. C

    Solder issue.

    You have to use eutectic solder. You will be the first person IN THE WORLD that says silver solder works well.
  10. C

    Stepper motor or Servo?

    Do you know what "registrations" is???? You will be much better off with a stepper motor and gearbox.
  11. C

    Piezo element microphone

    A piezo diaphragm does not have a very good response. The sound will be terrible. It will sound like a ukulele.
  12. C

    Stepper motor or Servo?

    You need a stepper motor and a reduction so you can get 17 locations for each revolution.
  13. C

    DPDT Latching switches

    Hundreds on eBay for 20 cents 5Pcs Portable 12mm Red Locking Latching OFF- ON Push Button Car/Boat Auto Switch
  14. C

    measuring the sound intensity of Ultrasonic Pest Repellent

    You need to get a piezo diaphragm that is capable of detecting (transmitting) at 60kHz. Connect is to a CRO and look at the waveform. That's what I do. And the psychiatric nurse let's me do it twice a week.
  15. C

    'Chasing' LEDs

    Just use my circuit:
  16. C

    'Chasing' LEDs

    Shift register(s) and a micro controller for ease of use If you have a micro you don't need shifty registers. The micro is shifty enough.
  17. C

    Good Soldering Station

    A temperature controlled soldering iron is just as good and costs a lot less.
  18. C

    Walmart power adapter voltage increase if in-between two settings?

    If you can.
  19. C

    Walmart power adapter voltage increase if in-between two settings?

    Get one that doesn't jump up.
  20. C

    Powering oscillated peizo buzzer

    The 3 terminals on the piezo are part of an oscillator. Th 3rd wire is feedback. The oscillator will produce 110v AC. That's why it is so loud.
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