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  1. C

    converter design

    Is the generator DC
  2. C

    what do i use !!?

    You can buy the Tx / RX for $1.00 with free postage 315Mhz RF transmitter and receiver link kit for Arduino/ARM/MCU remote control and then you need to take the output to a transistor switch.
  3. C

    Help with a flasher circuit with 555 Timer IC

    The transistor is doing nothing
  4. C

    Invert PWM signal

    "Show me the PWM signal" "like this" I am asking you to show me how you are generating the signal as many circuits can be changed to produce an inverted signal and simply passing them through a transistor will invert the signal .
  5. C

    Invert PWM signal

    Show me the PWM signal
  6. C

    converter design

    You need to specify the exact voltage produced by the generator/alternator
  7. C

    How to find a replacement hall sensor for unknown brand

    Because they produce one type and get dozens of failures which they give secondary names to.
  8. C

    How to find a replacement hall sensor for unknown brand

    Just cut the leads of the 10c Hall Effect and solder it to the lands
  9. C

    How to find a replacement hall sensor for unknown brand

    Here's the Hall Effect you need 10 cents each 10pcs New Hall Effect Sensor A3144 A3144E OH3144E TO-92S $0.99 Free international shipping
  10. C

    XMC Microcontrollers

    This is a homework question and should be in a different section.
  11. C

    How to find a replacement hall sensor for unknown brand

    Why don't you start by trying different ones or buying another copter for spares.
  12. C

    Running servo motors with PIC and L293D H-bridge

    You have to connected directly to the two wires coming from the motor.
  13. C

    Design help to control 2 relays

    Use a 4017
  14. C

    Building a time delay relay circuit with 555 timer

    "PhotoTransistor is a much better choice for this circuit." Why ?????????????????????? When the input impedance of pin 2 is 10M.
  15. C

    Building a time delay relay circuit with 555 timer

    Try this:
  16. C

    Simple Schematic - but components may not even exist! [600VDC]

    That is an absurd circuit. What are you trying to do???
  17. C

    Blinking LED Bottle Light Chandelier

    Get yourself a red blinking LED and look at it. If you like the flash-rate, use it to blink all your other LEDs.
  18. C

    Voltage Amplifier Stage (VAS) design

    Quite often it is better to spend 30 minutes and BUILD the circuit. You have already spent 35 minutes writing all the comments above. After 60 minutes you will have made the circuit, tested it, created the PCB, sent it off to the PCB makers and written out a confidentially agreement with an...
  19. C

    why we use ports ?

    I also have a little port every night.
  20. C

    Reverse Color Organ

    Remove R2. Connect Pin4 of the opto coupler to the base of T1.
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