I have a 5V single coil relay, a single +5VDC supply and a single +3VDC supply.
A microcontroller provides the 3V supply, so i can create a 3V pulse for the driver circuit need.
My goal is to design a driver circuit for this latching relay with common components - transistors, diodes, resistors, capacitors.
Since i would want to save in power consumption of the driver circuit, i'd want the relay to switch states in every 3V pulse.
For that design, I would probably need to add an addition control leg which will determine which 3V pulse will cause negative current flow through the coil, and which 3V pulse will cause a possitive current flow through the coil.
Thanks for any help.