Request - A simple circuit to recycle flyback in a pulse motor.

[interestedinou]

I am a laymen at electronics (but learning) and I am wondering if anyone here could explain a simple setup that could send the flyback current back into a battery. I appreciate the links, but if someone could provide me with a simple circuit I would appreciate it.

For example, lets imagine the following circuit. You have a battery and a wire comes from the positive terminal. That wire is connected to a reed switch and then a diode. The wire then goes to the electromagnet and back to the opposite terminal of the battery. The diode is setup so current can flow from positive to negative but not the opposite way around.

Is it possible to make another parallel branch of the circuit from a junction after the diode and just after the electromagnet? When the field of the electromagnet collapses would the current circulate around this circuit? Could I connect this branch of the circuit to the original battery and charge it? 

[jadaro2600]

I am a laymen at electronics (but learning) and I am wondering if anyone here could explain a simple setup that could send the flyback current back into a battery. I appreciate the links, but if someone could provide me with a simple circuit I would appreciate it.

For example, lets imagine the following circuit. You have a battery and a wire comes from the positive terminal. That wire is connected to a reed switch and then a diode. The wire then goes to the electromagnet and back to the opposite terminal of the battery. The diode is setup so current can flow from positive to negative but not the opposite way around.

Is it possible to make another parallel branch of the circuit from a junction after the diode and just after the electromagnet? When the field of the electromagnet collapses would the current circulate around this circuit? Could I connect this branch of the circuit to the original battery and charge it?

`what you say, and what you intend to do, is use an inductor to ...

you want to charge a battery by discharging a battery.  You just want them to be one and the same.

It would be like getting a larger reflection than is input back instead of forth.  This is like the holy grail of electronic circuits.

[capthook]

I appreciate the links, but if someone could provide me with a simple circuit I would appreciate it.

The 2nd link provided is an excellent example to study.  It is explained in more detail a few posts further down that thread:
http://www.energeticforum.com/renewable-energy/4314-cop-17-heater-rosemary-ainslie.html#post56075
You would then:
RL = your coil
Q1 = your reed switch

(Gyula - thanks for that link!)

Also, 2 battery setups usually seems to be recommended: 1 for supply, 1 for capture as doing both on 1 battery causes stresses that lead to shortened life?
But in this case, the flyback/collapse is sent to the 'precharge' capacitor, rather than back to the battery so this is a cool modification!

[Ted Ewert]

Here's one that works quite well. The zener provides two things: impedance matching and enough of a time delay so you can feed your recovery pulse back to the power source.
These values are for my particular application so you would have to adapt the concept to fit your own device. A TVS diode is nothing more than a power zener, and they will handle a few watts of power. In my application I use an IGBT which is triggered by the zener to handle more power.
I suggest using the largest value TVS zener you can. 1 to 3 times (or more) the value of the source voltage in low voltage motors. Add the source voltage to the value of the zener to make sure you don't exceed the maximum voltage rating of your transistor.
The majority of the power savings comes from the impedance matching aspect of the zener and not from the little bit sent back to the front end. Try a few different values to see this property for yourself.

Cheers,

Ted

[Paul-R]

Here's one that works quite well. The zener provides two things: impedance matching and enough of a time delay...

Flying off on a tangent, how much time delay?

I am thinking of another application uif electricity can be delayed for a very short while.