 | | Re: Help with connecting pyroelectric sensor —Michael Gasperi
| | | | <lego-robotics@crynwr.com> wrote in message news:84e2ed7a.250598...aol.com... (...) I (...) at (...) max (...) You need at least part of the circuit with the opamp. All the diodes, C1 and R1. I doubt you need a +5v regulator for the supply, but you (...) (25 years ago, 7-Sep-99, to lugnet.robotics)
| | | | | | | | | | RE: Help with connecting pyroelectric sensor —Ralph Hempel
| | | | | (...) I'd use one of the little reference diodes that make a precise 2.5 volt level from a dropped Vcc. I think it's an LM375-2.5. The reference is probably there to guarantee a certain output for a certain range, independent of the supply voltage. (...) (25 years ago, 7-Sep-99, to lugnet.robotics)
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