Hello there, this is my first post so please go easy on me.
I want to create a circuit that will pulse two very small electromagnetic coils and have been experimenting with this multi-vibrator circuit on my breadboard using the same components but with 6v.
http://www.technologystudent.com/elec1/dual1.htm
My circuit is powered by 4 x AAA cells and is switched via a Mosfet connected to an RF receiver. The EM coils are very small air coils (6mm cores) with 50 winds of 28 gauge wire and appear to draw approx. 3.5 amps when connected direct to the batteries.
Don’t laugh, but perhaps naively, I thought I could just swap out the 680R resistors and LEDs and replace them with the coils and snubber diodes. However, there doesn’t appear to be sufficient current to drive the coils at all.
My question is - should I try to get more current to flow through the circuit by using higher spec transistors, or should I just use the multi-vibrator circuit to pulse two small relays connected to the coils and power instead?
Space is an issue so I want to use as few components as possible.
I’m a complete novice, but a quick learner. Any advice or help greatly appreciated.
Thanks
Nick
I want to create a circuit that will pulse two very small electromagnetic coils and have been experimenting with this multi-vibrator circuit on my breadboard using the same components but with 6v.
http://www.technologystudent.com/elec1/dual1.htm
My circuit is powered by 4 x AAA cells and is switched via a Mosfet connected to an RF receiver. The EM coils are very small air coils (6mm cores) with 50 winds of 28 gauge wire and appear to draw approx. 3.5 amps when connected direct to the batteries.
Don’t laugh, but perhaps naively, I thought I could just swap out the 680R resistors and LEDs and replace them with the coils and snubber diodes. However, there doesn’t appear to be sufficient current to drive the coils at all.
My question is - should I try to get more current to flow through the circuit by using higher spec transistors, or should I just use the multi-vibrator circuit to pulse two small relays connected to the coils and power instead?
Space is an issue so I want to use as few components as possible.
I’m a complete novice, but a quick learner. Any advice or help greatly appreciated.
Thanks
Nick