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Posts posted by GPG
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Gain of 23gain of 22.
The sensor is easily able to drive a 10K load. The amp is probably stuffed through shorting the outputs. -
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.
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.a site with a similar project.
http://www.dutchforce.com/~eforum/index.php?showtopic=1556 -
The NE5532 is damaged. Replace it.
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Correctif my math is correct, I should have a gain of 22. For my example of V1=0.7V and V2 = 1V, the output should measure 6.6V,
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Bits of resolution for voltage measurement
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http://www.uco.es/dptos/electro/electronica/documentos/ele2N3055-D.pdf
If forced beta = 10 you have a good margin. -
Look at
http://www.ee.washington.edu/stores/DataSheets/cd4000/74c244.pdf -
How are you getting bidirectional from this snippet of schematic? I do not see that. I see input and output clearly stated. Author states he is trying to light LEDs with the switch.
MP
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. -
http://www.micrel.com/product-info/products/mic502.shtml
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http://www.electronicsforu.com/EFYLinux/circuit/jun2003/CI-2-DTMF.pdf
http://assets.zarlink.com/AN/msan_108.pdf -
What resolution do you need?
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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 -
The 157 is not a bidirectional switch
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The 5V polarity. Resistor in series with base of pulse transitor. Diode across be of same
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The suffixes are package types. N is the plastic DIP type. Go to the manufacturers site for others.
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www.necel.com/cgi-bin/nesdis/dl_ docpdf.cgi?lang=E&litcode=U11450EJ1V0DS00
www.necel.com/micro/ods/eng/list/17K/UPD17072.html
2 minutes -
Google "induction motor"
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This might help:
www.intersil.com/data/an/an9642.pdf -
It is a load of rubbish. While static charges of several KV can be picked up on an antenna, the current is so small that charging a deep cycle battery from such an arrangement is not possible.
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Another
http://www.linear.com/prod/datasheet.html?datasheet=163
Google "cold junction compensation". You cannot expect accurate results from a thermocouple without taking this into account. -
www.national.com/ms/LB/LB-24.pdf
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The transformer probably has an internal fuse. Some transformers have the connection between the primary winding and the fuse on a unused pin, others require peeling off the outer layer of insulation to locate.
Stupid op-amp question
in Electronic Projects Design/Ideas
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