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  1. ~43.5mV, 23 gain Reference please Reference please Capable of doing so down to 5
  2. Previous post Gain of 23 The sensor is easily able to drive a 10K load. The amp is probably stuffed through shorting the outputs.
  3. In his original circuit, the output will be 6.6V It only goes to 7.6 volts in your modified design. There is nothing wrong with the original design that requires modification, and it provides much better common mde rejection since the gain from both inputs is equal.
  4. . http://www.dutchforce.com/~eforum/index.php?showtopic=1556
  5. http://www.uco.es/dptos/electro/electronica/documentos/ele2N3055-D.pdf If forced beta = 10 you have a good margin.
  6. Look at http://www.ee.washington.edu/stores/DataSheets/cd4000/74c244.pdf
  7. The 4053 is an analog bidirectional switch. Looking at the pinning of the 157 it is easy to make the assumption that it is too. The OP saying that he was trying to switch between 2 leds lead me to the possibility that he had made the same.
  8. http://www.electronicsforu.com/EFYLinux/circuit/jun2003/CI-2-DTMF.pdf http://assets.zarlink.com/AN/msan_108.pdf
  9. Presuming you are monitoring the cylinder head temp, you will need a thermocouple or RTD for these temperatures. Sparkplug mtg one here http://www.performancetrends.com/DatamiteTemperaturePictures.htm
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