Dear all
I am trying to design and finally test a circuit. I know exactly what it needs to do but I'm having great difficutly draghting it and am desperate to prototype it for testing.
ok here it goes.......
In brief it is a 18v battery which powers an 18v motor (garden hedge trimmer size) - that is all i know about the values.
I need there to be two switches to close the circuit, ie. the user has to 'press' both switches at the same time to close the circuit. As soon as one is relased, the circuit breaks.
Here is where it gets a bit more complecated.
Secondly I need some sort of component (ive been told a relay switch is best) which could be used as part of a release mechanism when the power is cut. So imagine a small leaver or pin being at one point when the circuit is closed, but as soon as it is open, the pin moves to another position (like an on/off switch)
Thirdly im trying to understand more about RFID sensors and tags because what i want is to have another switch which simply cuts power to the motor when the rfid tag gets within about 10cm of the motor.
Just to explain the this switch/pin component further - the whole idea is that when the motor is running the device is secured to the users hand, but if the user gets into distress they release the switches to cut the power to the motor and the switch/pin will move allowing the mechanics to release the device from the users hand.
I have attached some sketches of the concept to explain further.
I hope what I have explained makes sense.... if not please let me know ( it seems to make sense in my head, which has be mean something i guess)
... would appreciate any help!!
thanks guys!!
Brendan
I am trying to design and finally test a circuit. I know exactly what it needs to do but I'm having great difficutly draghting it and am desperate to prototype it for testing.
ok here it goes.......
In brief it is a 18v battery which powers an 18v motor (garden hedge trimmer size) - that is all i know about the values.
I need there to be two switches to close the circuit, ie. the user has to 'press' both switches at the same time to close the circuit. As soon as one is relased, the circuit breaks.
Here is where it gets a bit more complecated.
Secondly I need some sort of component (ive been told a relay switch is best) which could be used as part of a release mechanism when the power is cut. So imagine a small leaver or pin being at one point when the circuit is closed, but as soon as it is open, the pin moves to another position (like an on/off switch)
Thirdly im trying to understand more about RFID sensors and tags because what i want is to have another switch which simply cuts power to the motor when the rfid tag gets within about 10cm of the motor.
Just to explain the this switch/pin component further - the whole idea is that when the motor is running the device is secured to the users hand, but if the user gets into distress they release the switches to cut the power to the motor and the switch/pin will move allowing the mechanics to release the device from the users hand.
I have attached some sketches of the concept to explain further.
I hope what I have explained makes sense.... if not please let me know ( it seems to make sense in my head, which has be mean something i guess)
... would appreciate any help!!
thanks guys!!
Brendan
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