Anouther winter project- an adams "push" motor" bassed on cd disks & commodore 64 floppy drive.
i also managed to charge some battery's with the reverse emf generated in the switching cct-might be able to apply this" free charge" idea to lots of electronic equipment that traditionally short reverse emf to ground.
@emanresUyttiWtresnI I thought magnets loose there energy at a rate of 1% per year no matter how much you use them?
maxvharper 3 weeks ago
Try it with a capacitor instead of a battery and see if it keeps going?
Also, is the Circuit Diagram available?
Spirality0 3 months ago
Energy from (permanent) magnets isn't free. Every time you make them do work, you decrease their magnetism slightly. This is why a gauss gun isn't free energy.
emanresUyttiWtresnI 5 months ago
@CyTou see it works and thats cool
fennectech 8 months ago
@Nomoreidsleft That back emf IS already used in any dc motor. EgXIa = Torque X Speed (rads/sec). Where Eg is back emf and Ia is armature current. Torque is developed torque.
This is called developed power. So were you to use up that energy with something else then you reduce the motor speed. Back emf is also directly prop to speed (for a fixed field). I am an elec engineer by the way!
sorova 8 months ago
@sorova It's not free energy, but just a way of increasing the efficiency of current motor design. Back EMF reduces the efficiency, because it creates an opposing force to the direction you want the motor to turn. If you can recover the energy loss from that, you get much more efficient motors.
Nomoreidsleft 8 months ago
Guess where the energy from the back emf comes from?? The power supply! Yes, so you gain nothing in energy at all. It is bs.
sorova 9 months ago
Hey @oatstao ,thanks for comment-i've been planning to repeat my test (adams motor)and youtube it,but i'm more interested in how this might be used to harness reverse emf that is usually wasted in switching coil circuits(many ccts waste reverse emf from what i can gather)-winter is here-i got more time-thanks for interest
RonL2524 1 year ago
@LiamXaoh that's what I was thinking too. It seems to be the case in a lot of these expositions.
oatstao 1 year ago
@LiamXaoh -i agree with you-reverse emf was being lost as heat when anode connected to ground(neg)(diode must heat up)-the charge rate for battery was not a lot-took hours to charge-more power was used to run motor.my thought was-think about how many pieces of equipment use "switching power supplies"-we are still talking about a coil being switched on and off by a transistor and a reverse emf diode installed so transistor doesn' t blow up.
this reverse emf is wasted traditionally-use it?
RonL2524 1 year ago