Hello Sirch,Here's an ultrasonic circuit I adapted from others on the Web. It works differently to what you propose, there are two stages of amplification which then dives a schmitt trigger to get 0 or 5v on the output.
Searching for a 40hz piezo amplifier, i found this schematic, but I could not find any info on this circuit.
I would like to construct analog circuitry to measure the pulses emanated from an hc-sr04 - is this centered around 40khz?
Please don't hijack other member's thread, now you have your own.
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Ultrasonic amplifier/filter problem
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