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  1. J

    90 degrees phase shift

    Thank You, I believe this will solve my problem!
  2. J

    CMOS

    In static situation the power dissipation is very low, depending if the CMOS is "full-digital" or in some degree analog. With analog some current is needed to maintain the analog-voltages inside the chip. With digital this current is very minimal. When CMOS is switching state, the device...
  3. J

    simple question about batt chargers

    Hi. This is not a simple question. Actually we need more information: What kind of battery You are using? NiCad/NiMh etc... For example with NiCad the voltage is not so good indicator, as it stays in 1.2volts but still getting more and more charge. Finally the voltage goes down a little...
  4. J

    90 degrees phase shift

    I have a sine-wave input, 45 to 60Hz, few hundred millivolts. The sine wave might have some distorsions now and then, and these distorsions needs to be replicated at output. (kind of mains-current monitoring device). The input varies from zero to some voltage, and is amplified to a 0-5volt...
  5. J

    How could I stop a nickel coil from emitting IR?

    There is *currently* no way to extract energy away from the coil ;( To my mind this is a glow-plug in a model-engine, that runs with methanol. The combustion cycle generates the heat that keeps the coil hot, and that ignites the next cycle again, getting heat from burning to be able to ignite...
  6. J

    Problem in an H-Bridge

    Hi. I recently "discovered" the VNH3xxx series of full integrated H-bridge chip from ST. It might be a overkill for You, but it is a single-chip solution, that works fine with PWM. But it is available only in surface-mount... Anyway an interesting device and fullfills Your needs.
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