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Recent content by Shu

  1. S

    220Vac to 5vCC without transformer

    power supplly without transformer Nic, I agree with you. It is an inductor. Based on colour, size and your measurement. Glad if you could trace the circuit.
  2. S

    Tip: IBM RS 6000 860 PowerPC Notebook

    Some one gave me the note book (>1996 production) Symptom: HD indicator ligh up but system refused to recognised the existing of SCSI HD. Remedy: Two of the surface mount fuses blown out (7 in total - need patience to open the casing)
  3. S

    HELP: SM or Schematic for Toshiba Personal Copier Model 1350

    Badly in need of that. Thanks in advance. Shu
  4. S

    Color light convert to frequency

    Possibly you can get some idea from here: https://www.electronic-circuits-diagrams.com/sensorsimages/sensorsckt3.shtml have alook
  5. S

    STI5518 jtag pinout HELP. please!

    jtag sti5518 Possibly you can get reference here: **broken link removed** have a look
  6. S

    Wondering if anyone can help a newbie ?

    I've done something look alike (wireless house alarm). I mordified wireless door bell (very cheap on the market). Open the transmitter and receiver, get the chip no and find the datasheet. With proper switching (for the code), you can control several receivers with one transmitter. You can...
  7. S

    What does the 5th resistor color band mean ?

    Re: Resistor Colour Coding A nice chart here for easy reference, https://www.elexp.com/t_resist.htm Have a look
  8. S

    How to Remove or Replace ... inside

    the surface mount IC (square, 80 pins, 1mm spacing) on circuit board using standard tool or any special tool required ? TQ in advance
  9. S

    Monitor RGB Colour Mixture

    I'm a little bit scare to do internal adjustments. I grabbed batdin ideas. Original AGP do not have that facilty, I change the AGP to a new one.... Wow......everything is there with a few more adjustment.... :D A 20 inches monitor for free :)
  10. S

    Looking for a good LCD display with following features

    Re: Evaluating LCD Display Have a look at this, http://www.industrialnewsroom.com/images/large/2003/10/27147.jpg and this catalogue **broken link removed**
  11. S

    Tapping AC source from Primary input Transformer

    Dear master, I own a tube amp with selectable AC input voltage transformer (110, 117, 230 and 240V). I have set it to 240V. Is it possible for me to tap the 117V on the transformer to be used for tube tuner that fixed at 117V AC input (trying to avoid stepdown transformer). Thanks/electronic...
  12. S

    Monitor RGB Colour Mixture

    Hi master, Someone give me Sony GDM-20E20 monitor. It's works, internally look untouched. The colour look dull (reddish). It has OSD for colour adjustments (scale 0-100 for each colour). I've tried several combinations, but still can't get the right colour. Any guide or ratio to get the right...
  13. S

    Schematic of Sony KV-21T5K

    sony kv-21t5k information I've with me the schematic and components layout, not full service manual (got it from the net, but can't remember where)
  14. S

    PIC Dev. Board .. view required

    I've own your said board. It work nicely. If you don't want to build yourself as posted by meax, it is a good alternative, the price quite reasonable considering the number of parts and components required. For a start I suggest you try a simulator, to get familiar with the pic
  15. S

    [SOLVED] What is the difference between a crystal and an oscillator

    difference between oscillator and resonator Oscillator is the general term for circuit that provide oscillation frequency (audio or radio frequency). For digital applications its normally refers as clock frequency. You can get oscillation (oscillator) either by using discrete component...

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