HERE IS YOUR FREE ENERGY. HANDLE WITH CARE.

[nightlife]

hansvonlieven, I am assuming that it filters all the bs out if it only leaves electricity behind. It must act like a cleaning solution that just cleans out the bs from the frequency. If that crystal does what you said, then why haven't you utilized it yet? Or are you just messing with me?

[hansvonlieven]

Are you telling me you want to filter all oscillations out of some electric current?

If yes you need a full wave rectifier, a Galena crystal is only useful for very small currents.

Tell me exactly what you want to do with what.

Hans von Lieven

[Megla]

I saw device like that once on the net, but I don't remember where.
Talking dont't help. Do something.

[pese]

.
Hello , i hope i can help ,  with simple unprofessional words better than complicated "sounds" around this. /My Father have had an radiorepairshop , and i (7 years old) was learning by asking.
So it was very simple to learn (60 Years are gone now)
---------------------

AC is an changing  current that change the polarity from positiv  to negativ , cross the Zero(volt) , and go again to positiv . tge dioode , rectifier , semiconductor is like an valve than conduct in one direction (as an closed switch)
and in other direction its like an open switch.
- Only one polarity will PASS the Diode  ! -
(This is valid for any AC like Radio- Audio-or line-frequencies)

SO NOW, YOU HAVE UNDERSTAND the diode.

On the output from diode you have an "pulsed DC ,
that say: the DC is not proper and swap (like the input frequency, from Zero to the peak Voltage of the High-frequeny (RF) or the
Audio Frequency (AF) or even to the Line frequency 50 or 60 Hz = cps (cycles per second - that was used in US )

You will ONLY have an "proper" DC , IF YOU used an capacitor
connected from this output to ground.

(in Low Frequeny Application USE: MIKOFARADS range in RF (radiofrequeny) in Pico-farads.

OK - NOW YOU WILL USE an crystal (diode) Receiver to rectify the power (or Messages) from an AM Radio-Transmitter.
(Exampel: 1000Khz = 1 Mega-Hertz)

Antenna Coil will calibrate with (variable) condensor so
that its are in HARMONICS with the transmitter station , so
the L-C will have the maximum Voltage (high resistance) that
can have (only) an few microwatts.

But with the 1000Khz (1Mhz)you can do nothing. BUT after
recifying this . It have DC (positive Voltage)
-or negativ by turning the diode in against direction-

-you can mesure it, if it used 1000pf Condensor (as output) ,
so you have an proper DC. - use this-in receiver- to have an better signal in any way!!!!

BUT this condensor it is SO small , that it will only
make an proper DC for the RF Signal .
The AUDIO Signal-from radio-station- that contains musik or Speach, will pass this condensor (with nears NO LOSSES) , and you can receive on 2  Kilo-Ohm earephone the AUDIO (Low Frequency modulation of the Signals) ,
also to an crystal/piezo Earephon), to an old crystal microphon (made from: Seignette-salt and aluminium-foil) also to als aoutput transoforner from an old tube receiver ( have 3-4 kohn to 8 ohm
for loudspeakers - will not be louder !)

If You use insted the 1000pf  for example 1000mf (uF) you will
hear nothing , Why?
The strong capacitor will also short the low frequencies !
(and make an Proper DC from the audio-signal)
-------------

Why the diode make not "disortion" to the audio frequency ?

BECAUSE the RF Signal from AM-Transitter is AMPLITUDE modulated !!
that say : The DC that you have after the Diode, have
an DC Voltage (positiv) and THIS DC is only fixed . It transmitter have NO AUDIO SIGNAL !!
If MUSIK (it wil be OVERLAYED , than THIS DC swap from ZERO to the dubble Voltage. (Because the Transmitter will change his output power,
now from (near) ZERO to the 2 times power. (Amplitude Modulation)
So the DC that make your crystal set will overlayed with
AUDIO Signal , that make an AUDIO frequency , that can used for earephone , also to use for amplifiers (sound-card)


I ONE wil change this in an better english , and send it to me.
I will change this thread (if need to understand)

Some people that have an better spelling, i hope to understand now better understanding the electronic

Pese

[Koen1]

so, what happened to One?
Last thing he posted sounded like he actually has some device capturing energy from the environment...
Something about a large U-shaped capacitor with a "keeper" on it, and one coil on either side of the U, one connected
to an antenna and another to the ground... And when he removed the "keeper" (what the bleep is a keeper?) he could take
the stored charge directly off that U-cap.
Or at least, that's what I understood from his post.

He clearly indicated that the crystal detector circuit was only meant as indicator, that he was not actually using an eact old
fashioned radio circuit using a piece of physical crystal for detection and filter and running high ohmic headphones to hear the
output signal... (btw, thanks for that little anecdote on crystal radios Pese, and indeed it's all about the AM nature of the signal)
He was just talking about the principle of the thing: we selectively isolate one specific frequency, in this case that of the radio station we wish to hear,
and we collect all other em fluctuations to drive the rest of the circuit, including amplification of our desired signal.

Now he also mentioned not to focus so much on the antenna since the coil could be used for that, which reminds me of the stories of
an old army radio engineer who often mentioned the tricks they used to pull with coils used as antennas... There was some formula which showed how a coil could be used as an antenna of almost the same length as the total length of the coils wire, and then there were different coil shapes that had different effects too:
a conical shaped antenna or coil would have quasi-omnidirectional effects, while other shapes had clear single direction or single plane effects... It's been a long time since I last spoke with the guy, will see if I can dig up those stories again.

The problem I have with the idea as far as I understand what is described, is that even assuming we have proper coils and antennae to capture all of the incoming em waves, then still the received signal will be a mix of different frequencies... And if we have them interact with our circuitry all at the same time over the same coils, the received energy should also be a rather jittery mix of positive and negative voltages, which would give a significantly lower energy output than we might have gotten when we receive and rectify all those frequencies seperately... Right? (just draw 10 different freq signals in the same diagram and calculate the average value at each point in time, the superposition of the freqs, and you'll see what I mean.)

Now with the use of some diodes and rectifying bridges I can imagine how these possible frequency differences and superpositions as well as the em waves themselves could be handled and rectified to maximise the relative voltage movement in respect to the capacitor; but since One does not mention these, I do wonder how he proposes to go about this...

0ne, will you please post some more on your U-capacitor idea?? I'd like to hear how it's working out... Is it still running? How much output do you get?
Are you willing to tell me exactly what you've constructed there? I might want to replicate...