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Recent content by bruces3

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    Please help for b2545

    I need info for b2545 (transistor): function , replacement , data sheet Thanks for helping.
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    Star delta configuration for 3 phase motor

    star delta configuration When we are using star or delta configuration for 3 phase motor ? What is the advantage use star or delta ? Thanks for your help.
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    What exactly is an inverter ?

    Can anyone explain what is inverter? Can inverter mention as converter ? Many thanks for your answers.
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    basic works on proximity sensor

    There 2 type of proximity sensor : inductive and capacitive. Capacitve type can detect material like glass, rubber, wood, etc. Wonder how does the capacitive sensor works??
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    What happen to output transistor?

    This is the output from collector. The input is pulse. When pulse is from low to high , output is likely to respon quick. But when pulse is from high to low , output is about to have slow respon. Why does the transistor is likely to off slow not like when on?
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    Why is 220/110 Volt standard in the industry?

    All home appliance like microwave, tv, refrigertor , washing machine, etc and also in industry use source 220/110 V. Why is special about this number 220 or 110? Where do these come from?
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    Want to learn about Microcontrollers

    A book by Scott Mckenzie about microcontroller 8051 is also good.
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    Help with Neural Network - Transfer function

    Perhaps i'm wrong, nn doesn't deal with transfer function. But the characteristic of the function which can be learn by nn. NN doesn't like math eq like transfer function. It's only learn by data in-out. These data maybe can be got from the t.f. So we imitate the t.f's characteristic by the nn...
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    need help on the design of dc-dc

    Maybe you can try with app. like pwm control. It's also a kind of dc-dc conv or dc chopper.
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    Neural Network and Fuzzy Logic

    Simon Haykin : NN A comprehensive foundation Roger Jang : Neuro fuzzy and soft computing for further exploration
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    IC Replacement for LF351

    lf351 lm301 also good choice. it has high slew rate
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    how to increase the current with the same power 3.3v?

    easy solution : just change your power supply with larger ampere
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    help for driver motor dc with BJT

    I have this circuit for drive motor dc but won't work well. Motor speed at given voltage supply, don't vary to the input pwm. My motor is 24V 48W.
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    How can I start making my own professional PCBs ?

    how to make PCBs ? Can i use other printer like ink jet, mine is canon 255sp.
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    Strange font in the frame when launching Mathlab 6.5 on PC

    Re: mathlab problems? I had this problem too. I guess the problem is with vga card not with the matlab. When this happened i wait for a while until the display is clear. What is your computer? Mine is PII 288MB vga riva tnt 32MB. Now I use matlab 7. Never meet this problem except slower when...

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