I'm reposting this in a diiferent format. Please tell me how you would design. Application - Operate vibrating motor with 1 button battery and on/off swith. The PRIMARY desgn concern is SMALL in size - every MM is critical. Battery should operate motor for 15-30 mintues at full power - we don't want to regulate power to motor as the battery is barely enough to drive it as is.
Operation - Initiate on button (assume tact switch) motor runs and remains running until switch is initiated again and motor is now off.
Planned components.
Battery - LR43 -
Motor -
Switch -
So if we use a tact switch then we need an IC switch of some sort. Press/release the tact sw. circuit is closed and motor operates (circuit remains closed). Press/release tact sw. again and motor if off/circuit open. This is the part that is missing. I am working with a factory in China and they had a concern that as the voltage drops off the IC will not work properly. This might be the low dropout? I am no electrical enginner, but I do search hard and I noticed a lot of the IC switches that I researched require 1.65V or more to operate. I'm not even sure I'm looking at the correct components, but I can imagine a switch requires some V to remain in the closed/latched position. I think the concern is the motor sucks a lot of power from the battery and V will drop off - but we want the motor to operate at the highest capacity until the battery is dead or it is turned off.
I had one response earlier that suggested a NPN transistor, but I am wondering if this works with the tact switch - circuit remains closed after momentary intitiation of tact switch. Please excuse my ignorance, but I'm trying to understand and learn.
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Thanks for looking at this and responding.