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  1. GPG

    20kv Multiplier

    Depend on what you start with.
  2. GPG

    DC to AC 50hz 12vdc to 12vac

    1.5W? you could drive it with an audio amp Seems small for an AC motor. Pic?
  3. GPG

    Modular house - intercoms won't work from front to back.

    Have you got a single distribution panel?
  4. GPG

    Sensor interface, OP AMP, -500mV +500 mV to 0-5 V amplifier

    Also the output will go to within 15mV of the rails into a high resistance load. The only thing missing is whether a few nA input current is ok or should pA be required. OP?
  5. GPG

    Voltage drop across a 1626 tube as a rectifier??

    http://content.lib.utah.edu/utils/getfile/collection/uulrfc/id/7069/filename/6959.pdf
  6. GPG

    clever vibration motor driver?

    https://en.wikipedia.org/wiki/Factor_of_safety
  7. GPG

    Need help on constant Voltage and current

    Cannot see how that could happen unless the wiring is incorrect or the regulator is faulty or the regulator is oscillating. (.1 μ ceramic on the input)
  8. GPG

    Need help on constant Voltage and current

    Connected to adj pin? What mfr? Heard plenty abt knockoffs (crap)
  9. GPG

    Sensor interface, OP AMP, -500mV +500 mV to 0-5 V amplifier

    From LT1635 data "The input common mode range of the op amp includes ground"
  10. GPG

    Building an EMP, having difficulties

    If the ground terminal is unconnected it has no effect.
  11. GPG

    Need Help on semi automatic water level controller using 555 in bistable mode

    ? link? As above. OP.. Easily fixed but if you have already been offered it....
  12. GPG

    Motomaster Eliminator Power-Box 800

    Try charging it with a 'dumb' charger. Some chargers will not switch on at all if the battery is very flat.
  13. GPG

    College Project: Force Sensor displayed on 7 Segment

    You don't need to use a micro. You could use a peak hold (2 opamps) and a cheap panel meter.
  14. GPG

    self-walking legs

    https://en.wikipedia.org/wiki/Powered_exoskeleton
  15. GPG

    High Precision LED Absorbance Measurement

    A technique used in exhaust gas analyzers a few years back. With a rotary wheel to switch paths.
  16. GPG

    A true novice needs help, electronic game trail alert

    You could arrange each transmitter to send a tone and discriminate at the receiver. https://www.google.co.nz/search?q=lm567+tone+decoder&ie=utf-8&oe=utf-8&gws_rd=cr&ei=QiFMVryUBsPB0gTOrbWICw And DTMF...
  17. GPG

    Voltage sensor 10-15v

    Got an oil pressure light?
  18. GPG

    Sensor interface, OP AMP, -500mV +500 mV to 0-5 V amplifier

    And if dual rail needed a switched capacitor converter will do eg: http://www.analog.com/en/products/power-management/switching-power-converters/switched-capacitor-converters/adm8829.html#product-overview
  19. GPG

    Sensor interface, OP AMP, -500mV +500 mV to 0-5 V amplifier

    From reading abt sensors, they are high impedance. The only cct I found uses a CA3140 input buffer. Hence RQ for any data. If a .5v offset on the input is ok then http://www.linear.com/docs/1992 will do the offset and gain.(replacement for the obsolete LM10) If a higher input impedance is...
  20. GPG

    Sensor interface, OP AMP, -500mV +500 mV to 0-5 V amplifier

    Info on sensor?
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