The present design that i use in order to switch my single coil latching relay is:
The two 5Vs come from a single 5V-regulator, and Vcontrol-1,Vcontrol-2 come from two 3.3V GPIO legs of MCU.
Each time a different GPIO leg is turned on (while the other GPIO is off), the relay is switched.
**broken link removed**
The relay has 5V, 1W rated coil, and 25ohm (+-6%) coil resistance.
According to datasheet, it can be switched with only 75% of its 5V rating (and i use this fact in the design).
The problem with that design is that it consumes about 1A total the single 5V regulator i posses each time the relay is switched.
Can anyone help me to design a driver that wont consume that much current from the single 5V regulator?
Thanks.
The two 5Vs come from a single 5V-regulator, and Vcontrol-1,Vcontrol-2 come from two 3.3V GPIO legs of MCU.
Each time a different GPIO leg is turned on (while the other GPIO is off), the relay is switched.
**broken link removed**
The relay has 5V, 1W rated coil, and 25ohm (+-6%) coil resistance.
According to datasheet, it can be switched with only 75% of its 5V rating (and i use this fact in the design).
The problem with that design is that it consumes about 1A total the single 5V regulator i posses each time the relay is switched.
Can anyone help me to design a driver that wont consume that much current from the single 5V regulator?
Thanks.
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