Simplify the schematic whistle detector

Thread Starter

Motanache

Joined Mar 2, 2015
523
Please help me to reduce the number of components in this circuit.

I experienced it at the time.I worked but not at an acceptable level.
-The place to enter the PCB is small.
-I would like to use the electret microphone
- I use PIC12F675 with A/D (Edit: I misspelled the name of the IC)
For example there are PIC16F1769 with op amp internally connected. But it is big enough for the purpose.
-No UM3763
-I want to get out of the schematic to tI misspelled the name of the IChe two transistors(BC847)
---maybe to find a microphone with the desired amplification in the same case
---Or to use the A / D input (in PIC12F675) 10 bit 0...5V, but the signal at the output of the unamplified microphone would be too small ....maybe.....10mV/Pa
- 12F675 is doing simultaneously other task, so I do not give up on it



https://forum.allaboutcircuits.com/threads/whistle-responder-circuit.107759/
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Thread Starter

Motanache

Joined Mar 2, 2015
523
I want more software and fewer external components.
I want a device to be very simple to realize in practice with less soldering points.

(The point is to have a very low cost)
 

Thread Starter

Motanache

Joined Mar 2, 2015
523
Thank you very much, I did not know about this integrated: HK226.
Unfortunately, I did not find it at the shop where I buy parts.

Working with SMD would greatly reduce the size, but for now I can not do PCB for that.
PIC16F1782 seems to be a choice. It has op amp and A/D and D/A.


NECESSITY IS THE MOTHER OF INVENTION ! I want to put this signature, but I do not know how
 
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