Hello,
I know that are many circuits about ultrasonic range meter but i have made different one.
The circuits works but with some problems:
1. Range is very small about 3 inches
2. In transmitter part I used totem pole circuit to sent 0-12 V f= 40k Hz wave but on trancuder I can see 40k Hz with noise
I am not sure about the Band-pass filter
Can someone check that circuit ?
greetings
I know that are many circuits about ultrasonic range meter but i have made different one.
The circuits works but with some problems:
1. Range is very small about 3 inches
2. In transmitter part I used totem pole circuit to sent 0-12 V f= 40k Hz wave but on trancuder I can see 40k Hz with noise
I am not sure about the Band-pass filter
Can someone check that circuit ?
greetings
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