which op-amp?


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    We are currently using Intersils CA3140E and CA3240E. Both parts seem to work really good. The only problem that we seen was if we did not have a 100 ohm resistor on the output and a small AC signal back fed it would smoke it. With the 100R resistor in series it works flawless. We on use 2 resistors in ours which seems to work pretty good.

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    google search gives me
    http://cms.hlplanar.de/data-live-pla...ng/KMC1_20.pdf

    TL072 should work and it's very cheap
    Steve

    It's not a bug, it's a random feature.
    There's no problem, only learning opportunities.

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