Thank you Harald for your help!
can I use this 555 timer? https://www.circuitbasics.com/555-timer-basics-astable-mode/
how to connect the h-bridge(https://www.modularcircuits.com/blog/articles/h-bridge-secrets/h-bridges-the-basics/) with the inverter to an above timer?
i have a 9-12v battery and an electromagnet.
the circuit must be able to switch battery polarities at 1-20 times per second (switching time is adjustable with a potentiometer) I need the simplest circuit possible using common electronic parts
hi, is anyone willing to point me to a circuit for this relay polarity switching:
I need to use it directly with a 9v battery (no Arduino needed)
thanks :)