Voltage Clamp - 5v boost sensor

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neddy

Joined Jun 5, 2011
1
Hi,
I am trying to make a voltage clamp for an automotive boost sensor.
the sensor on the vehicle has a range of approx 0.8v at atmosphere and 3.0v+ under boost. i wish to clamp it at approx 2.5v - 2.6v,

I built a silicon chip Fuel cut defender ( http://www.siliconchip.com.au/cms/A_108397/article.html ) but if any voltage of less than 1.4v is on the input the output stays at 1.4v and i do not understand why. above 1.4v the input and output are approx the same until the clamping voltage, as expected

an alternative circuit or other suggestion would be much appreciated.
Thanks.
 

hgmjr

Joined Jan 28, 2005
9,027
Hello,

I am closing this thread as it violates AAC policy and/or safety issues.

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hgmjr
 
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