As long as the PV output voltage is higher than the battery it will charge the battery. When the PV output drops, the battery will drain through the PV circuit. Many sailors have woken up to find drained batteries from either leaving their solar charger on at night or not installing diodes to...
Just so. But I believe that only young humans who have never had an inner ear infection and who live in a pre-industrial society can hear anything over 19KHz.
I wish to train the dog more so than annoy or harm anyone or anything. I would like to teach the dog that one to three barks in a...
Thanks for reading my post.
I would like to produce 23KHz ultrasound at a presure of 70 to 100 dB.
I am thinking that I will need a device to create the 23KHz signal, an amplifier, and either a transducer or a piezo-buzzer.
I'm looking for a point in the right direction.
Are there...