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Nice one!
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Forgive me my opamp ignorance, but how can the signal at point D = after attenuation 10:1 have an amplitude of 1.76 V when the opamp is powered by VDD = 5V ?The scope is triggered off channel 2 which is monitoring the TX pulse width from the PIC (pin 10), and channel 1 is the signal at point D. As you can see, the signal just comes out of saturation at about 50us.
Even 12V / 11.1 * 1.1 = 1.18 ?
On the schematic, "VDD" is the output of the 78L05 ?
I assume the opamp is powered by 12V instead of 5V?
Thanks,
- BernardComment
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Any further developments on the impulse2 i can't for the life of me see why this thing is not better it should really be far more sensitive than it is (better depth anyhow) and i am at a loss as to how to improve matters on paper it rocks but in reality it sucks feet......?Comment
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