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Recent content by billlee000

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    smps board burn problem

    Hi, Please check with your gnd of ic, the primary gnd and secondary gnd should be isolated! Bill Lee
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    LM2576-5.0V Power Supply Problem.

    Hi, Please check if the heatsink of the package is connected to ic vcc or gnd base of the wafer, it is very important ! Bill Lee
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    Please help with PLD! I can't take it no more!

    Dear guys, You may use the PLAN software which can be downloaded from internet. It can generate PLD Jedec code of PAL16L8, PAL20L8, PAL16R8, ... I had been searching for long time and finally found this. Regards, Billlee
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    Why PCB color is Black

    black soldermask The solder mask could be yellow or red too. It depends on customer requirement. Regards
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    Pads software for Dos ?

    pads dos version Hi, guys ! Does anybody know where can find the PADS PERFORM software for free download ? Mantor website is no longer support it ! Thanks, Bill Lee
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    PowerLogic parts creator

    It is in the manual bar, you press the "tools" on manual bar, and go for the part editor! Regards, Bill Lee
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    Homebrew programmer project for PLD ?

    We can use GAL to simulate the PAL function since it can be reprogrammable. Once the design is finished. We can convert it into PAL. But so far, there is no homebrew PAL programmer available on Web. Regards, Bill Lee
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    Homebrew programmer project for PLD ?

    They are only for GAL devices, not for older PAL device. Thanks, Bill Lee
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    Homebrew programmer project for PLD ?

    homebrews cpld Dear all, I have some PLDs such PAL16L8 and PAL20L8. Does anybody have homebrew programmer for PALs ? It seems not available on the web ? Regards, Bill Lee
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    Does any body have the lattice starter pds software ?

    Hi, guys ! Does any body have the lattice starter pds software ? Since it only works under Win95 or earlier windows platform. Bye!

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