I have my basic CRITTER RIDDER circuit using a PIC to generate a 3-6khz frequency.
Now am wanting to apply to an automobile but the little 1 1/8" speaker won't cut the mustard.
Looking at using a Pienzo tweeter instead but needs amplification.
found two circuits that produce high frequencies (would really like to combine ultrasonic with the 2-6khz. mix the two sounds together?
Amplifiers = looking at the TAD2003 10w unit. as well as the push-pull circuits in the links.
not real knowledgeable on sound etc subjects.
any advice would be helpful.
the one circuit uses a transformer but gives only winding counts sand wire size (am sure there is a method of figuring what transformer to purchase.
https://www.electronic-circuits-diagrams.com/homegardenimages/1.gif
Ultrasonic pest repeller