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bemf “quest for OU”VII

F.E.N. — Wed, 28 Jul 2010 05:33:29 +0000

Very interesting observation while playing with bemf pulse motors (the idea’s to make enough thrust from magnetic pulse motor powered by 1.5v bttry to spin light generator, making 0.01more watt of power than spent). So, as we can see the bemf creating pretty big voltage on 1.02v bttry, and even more interesting that the voltmeter showing voltage even with one lead…

The “Ossie motor” self-running, self-charging in closed loop

F.E.N. — Fri, 29 Jan 2010 07:15:26 +0000

Here this is the closed loop test of the “Ossie motor” based on Ossie Callanan design. This is a high efficiency air core pulse motor which runs in closed loop and self-charge its own 1.2 V NiMh battery pack. The efficiency is nearly close to 100% or may be more… This motor is able to run self-powered during a lot of days… For more information, visit: jnaudin.free.fr

Back EMF VII “quest for OU” II

F.E.N. — Wed, 30 Dec 2009 00:40:22 +0000

Some more tests with BEMF. Playing with coils and transistors have made Bedidni SG running from 1.5v bttry. And seems it can run straight from bemf of RS bracker from Adams motor (bemf pulses charging 5V 1F supercap from which SG is running). No worries, no OU yet (lol)…just a long run with slow declining of charge of 1.5v bttry. Happy New Year!

Back EMF VI “quest for OU” I

F.E.N. — Fri, 25 Dec 2009 04:39:20 +0000

Some more BEMF tests. Reed switch bracker and heavy wire coil making up to 150 volts impulses into the cap. Without cap its around 5-6v. So trying to send it back to bttry in different ways – straight to, and using second Pulse Coil setup shifted 45 degrees (it gives a chance to send impulses into each bttry when RS is open; not to the coil). This setup running for days, but voltage is still declining. Merry Christmas!!..

jt “pulse motors driver”

F.E.N. — Sat, 19 Sep 2009 17:12:01 +0000

Single coil reed switch Adams motor and bifilar coil transistor switch magnetic gyroscope powered by jt.

backcharge I

F.E.N. — Mon, 07 Sep 2009 01:17:52 +0000

Have made the same setup as “zeropoint”’s – 50/200 turns bifilar coil, reed switch for primary coil, LED for secondary as a diode and charging the same bttry, but instead of the ball just made some mags arranged in the rotor; working in the same way as a ball. Yes it’s running good, very economical, hrs, but it’s NOT selfcharger. Hope with the ball it makes a difference… ps. And yes the reed switch is sparking.

Reversible permanent magnet

F.E.N. — Fri, 30 Jan 2009 04:24:08 +0000

A reversible permanent magnet is a magnet that can be turned on and off and can keep either state without external power.

Click here to view the embedded video.

The video begins with the magnet in “on” mode, that is, it is holding the bar on the bottom against gravity. Note that the power supply is off (as seen in the background).

A charge pulse is applied (by switching the DC power supply on then off quickly) which changes the magnet to “off”. The bar on the bottom drops onto the table.

We hold the magnet near the bar and it is not attracted to the magnet. (This could have been done more dramatically in the video).

Next, the polarity of the DC signal is reversed (we reach behind and swap the banana connectors) and again a short DC pulse is applied. The magnet picks up the bar off the table.

Although we don’t explicitly show it clearly in the video, the power supply is off with the exception of the short pulses that turn the magnet on or off. The rest of the time the magnet stays in whatever state it is in; that is why it is still called a “permanent magnet”. This is also how this differs from a solenoid where the electrical input power must be provided any time the magnetic field is on.

Built by Ara Knaian, video by Amy Sun, both of the MIT Center for Bits and Atoms.

jt charger

F.E.N. — Sun, 25 Jan 2009 20:02:00 +0000

Simple charger powered by joule thief. Back emf bouncing in oscillator builds up enough voltage to charge 9V battery and lite bunch of LEDs or run a pulse motor.

jt pulse motor

F.E.N. — Sun, 25 Jan 2009 06:10:02 +0000

Small pulse motor powered by joule thief. Back emf bouncing in oscillator builds up enough voltage to lite bunch of LEDs or run a pulse motor.

pulse pendulum

F.E.N. — Thu, 12 Jun 2008 02:35:40 +0000

Playing around the Bedini pendulum, made one with the C-shape core and 7 wires coil (2 as a trigger coil, 4 as a power coil, 1 to led; all on the same core) and tried with different types of commutation (hall, reed switches, mechanical contacts). It runs either way depending which side hits the top first. And yes, there’s a power source – 9V battery.