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  1. aniruddha

    Please help on "Telephone voltage levels".

    Hi, I am planning a project to control (on/off) various home appliances via telephone. I think that telephone line offers 3 different voltages for following conditions: 1-telephone not in use 2-telephone ringing 3-telephone telephone in use (i.e. eg. when receiver is picked) The controlling...
  2. aniruddha

    Happy New Year 2007

    thanks for the wishes, n hearty new year wishes to all from me too :) ---Aniruddha
  3. aniruddha

    Please tell me whats a "STEPPER MOTOR" ?

    Thanks, MP it is very helpful. --Aniruddha
  4. aniruddha

    Polar Capacitor as a Diode?

    Thanks a lot guys it really helped   thks audioguru , i did search google but getting an accurate answer on google when a question is too specific is a bit difficult.   thks nura, sharing your experience surely seems to have saved me from getting into trouble at college for trying this out ...
  5. aniruddha

    Polar Capacitor as a Diode?

    But what if a low frequency (eg.  0.5 hz) a.c. vtg is present across it with a negative d.c. shift (less than the amplitude of a.c.) ? say it gets charged during the positive part and discharged during negative but as duration of -ve will be more after getting completely discharged then what...
  6. aniruddha

    Polar Capacitor as a Diode?

    Aww... come on guys please help me  :'( Atleast with the first three??
  7. aniruddha

    Please tell me whats a "STEPPER MOTOR" ?

    Please tell me whats a "STEPPER MOTOR" ? Does it also have part numbers or variants? Whats the approximate cost? Thanks in advance.
  8. aniruddha

    Polar Capacitor as a Diode?

    Hi everyone, I have a few conceptual probs. pls hlp. 1- What is the constructional difference between polar and non-polar capacitors? 2- What is the operational(functional) difference between polar and non-polar capacitors? 3- If a polar capacitor is connected with opposite polarities will...
  9. aniruddha

    Beat Controlled LEDs

    hmm.. well i didn't suggest a LM3915 because... I didn't know about it ... he he he
  10. aniruddha

    circuits

    If the size of ckt is quite large then the effect of stray capacitances and inductances could be reduced by 1- Twisting the connecting wires. 2- Connecting a very small (about 1pF) capacitance in parallel close to the IC pin.
  11. aniruddha

    Beat Controlled LEDs

    Hmmm.... do you mean something similar to those different colour LEDs that glow depending on frequency outputs and the number of LEDs of a particular colour glow depending on amplitude of output of that frequency? Well say you've got an option of 5 colours ... R/O/Y/G/B. You could use band pass...
  12. aniruddha

    Slow power up effect

    you said:="I need an automatic pot. If I could somehow start with lots of resistance that decreases after power is given then I would be set ! " What about using an inductor? You could also connect a tiny resistance in series.  ;) Just trying to give a suggestion.  ;D
  13. aniruddha

    Voice recognition system

    From the last post it appears that u just want a DAC ckt using passive components like resistors... if thats right i could suggest the foll. 3 methods: 1-Binary weighted resistor D/A Converter 2-R/2R Ladder D/A Convertor 3-Inverted R/2R Ladder Convertor ...the above ckts. do require an amplifier...
  14. aniruddha

    DAC 0808

    hi ashray, i m a newbie too and actually this is my first post so excuse me if theres any mistake ;D I read a book on D/A--A/D convertors ... but in the book 0808/0809 monolithic CMOS devices were mentioned as Analog to Digital convertors so is that what u meant?
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