Pedro Doria Meunier
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Hi All (this is my 1st post ;-) ),
Would very much appreciate if someone more experienced than I (which should be about everyone else here ) would check the circuit in attachment (in JPG. can't upload a gschem?? 8-O).
My doubt concerns the bottom part (resistor+cap combo) where the relays connect to ground... I'm trying to save as much power as I can since this is a battery powered project.
The relays are 5V with nominal power up to 0.3W and operation power up to 0.14W which, by my calculations, gives a startup current of ~60mA and ~28mA for operation.
The bottom cap is there for that extra startup "jolt" (relay takes ~6ms to fully energize the coil) and the resistor for the operation current.
Now... I'd very much like to hear about ways of saving even more power and keep the relay coil energized
Also please comment on any errors I may have done in this circuit
TIA,
Pedro.
Would very much appreciate if someone more experienced than I (which should be about everyone else here ) would check the circuit in attachment (in JPG. can't upload a gschem?? 8-O).
My doubt concerns the bottom part (resistor+cap combo) where the relays connect to ground... I'm trying to save as much power as I can since this is a battery powered project.
The relays are 5V with nominal power up to 0.3W and operation power up to 0.14W which, by my calculations, gives a startup current of ~60mA and ~28mA for operation.
The bottom cap is there for that extra startup "jolt" (relay takes ~6ms to fully energize the coil) and the resistor for the operation current.
Now... I'd very much like to hear about ways of saving even more power and keep the relay coil energized
Also please comment on any errors I may have done in this circuit
TIA,
Pedro.
