SJR Looper breakthrough! – Light keeps going after battery removed by lasersaber | May 12, 2014 | Joule Ringer | 35 comments 35 Comments plaxius on May 12, 2014 at 4:33 pm few turns has the transformer ?? Reply Thomas TS on May 12, 2014 at 5:02 pm It is absolutely vital to show how to build he coil. Also how the two are connected to each other, in opposition or in series. Reply Alejandro on May 12, 2014 at 5:47 pm it is necessary to know how to replicate thousands !! Reply Kleo on May 12, 2014 at 6:08 pm Hi! This is my first post here. I watch your website from about one month and I’m interested too in alternative energy sources. Someone who can count will be sure that you use the same “magic” source of energy that Akula (or Tariel) uses in their projects. It is something caught by the coil. I think that grounding would allow this to show its potential. As an example you can use the torch handle to ground via body. Another thing which was mine invention too is what I call the abort power supply circuit, which give only the pulse of charge to the cap to hold the voltage (You should try it). If I make good calculation for your circuit the cap isn’t to drain its charge, its morely to keep some level of voltage for the transformer. To check this you can connect your circuit to two garden solar sources in serial. They give fine voltage – i.e. 4 volts per one, but the current is so low, that its useless in normal operation. In your example this issue can be much changed. I’ll stay tune to your invention. You’re very near to make eternal torch 🙂 I made some year ago the dynamo which gives about 12V and very crappy low currents (4 coil from 24v relays in serial and 4 HDD magnets glued to a CD), I think it would be ideal in this operation to light the torch. Przemek From Poland. Reply Paul Frei on May 12, 2014 at 8:09 pm Superb results, congratulations! Reply NoDrawBack on May 12, 2014 at 9:54 pm Which end of wich coil is soldered to the copper foil(s)? Thanks for sharing… Reply metal59 on May 12, 2014 at 11:29 pm Please tell, what’s the frequency? Reply Ryan Thompson on May 13, 2014 at 2:24 am Nice work! I would love to replicate but have no way to make the bobbin, plus I do’nt know turn count! I also have a very nice LCR meter. If you don’t have away to measure the cap or coils I would be happy to help in exchange for some bobbins? B&K Percison 889B. Let me know, keep up the good work! Reply travbm on May 13, 2014 at 2:42 pm Do me a favor please and hook up the posative to an antenna and the negative to a grounde. You may runthem into a full wave bridge if you prefer with a ceramic cap to have an atmospheric led. You may a good antenn and ground. Reply Mladen on May 14, 2014 at 6:03 am Just thinking … http://jnaudin.free.fr/captret/index.htm Reply John Burtchett on May 15, 2014 at 2:20 am what up!!! I made the sjr 3.0 and it is awesome. I was the first circuit that i have ever made and it worked really well. I am blowing transistors though when i get more than 3 lights hooked up. how important is a heat sync? im using a 12v 12 Ah lead battery i got at radio shack. Im hooked on this stuff ive made 5 crystal cells witch is how you sucked me in and started to make an electrostatic motor. Anyways in your expierence how much does a boost pack help the circuits efficency. ive been looking the buy a bigger transistor but im not sure that is the problem. Reply theStone on May 15, 2014 at 9:17 pm Can you show a video how you made the coils and the case that is. thanks Reply xenophed on May 18, 2014 at 4:55 pm I have made a replication of this using a different type coil. I did not have germanium parts so I used silicon and had a 45 second run down but I was impressed Reply Ron on May 19, 2014 at 5:27 am Fantastic Results! Very impressive. You may find interesting the following document by Dr. Harold Aspden. Page 210, The Physics of the ‘Magic’ Capacitor: http://haroldaspden.com/the-physics-of-creation/12edpocch9.pdf The copper tape may be acting as circular capactiors, as explained in Dr. Aspden’s book? Keep up the good work and thanks for sharing. Reply Vladimir on May 20, 2014 at 5:12 pm I would like to have more details about this device, specifically about the transformer construction. Thank you. Reply Vladimir on June 2, 2014 at 5:54 pm What is the winding ratio and wire diameter on the transformer. What pot core did you use? Reply calvs on June 5, 2014 at 2:45 am sell one to us a s a kit Reply niel on June 9, 2014 at 5:04 am sir. can you gave us the specs of the transformer?? the size of the core, the ratio of winding, and the diameter of the wire. Reply Greg on June 22, 2014 at 5:59 am I smell fraud or a glaring error – there’s no current path through the base of the transistor Reply vasile on November 20, 2015 at 5:09 pm There is no fraud. The base current is AC and comes from the capacitive coupling between primary and secondary coil. First time i saw this circuit I believed the same as you. The coil arrangement is essential to do this circuit working. My preliminary tests (two coils only) are able to light for max 2 minutes using 1000uF capacitor starting from 9V and two bright white LEDs in series and only 15 seconds if using 5 bright white LEDs connected in series. The primary-secondary coil and number of LEDs are interrelated. Some configuration does not start without the 20M resistor between base and plus pole of the capacitor. The time increase indeed if connect the minus of the battery at the earth ground. Reply xenophed on June 25, 2014 at 10:24 pm The base does have current from the coil see xenophed.cf as my circuit has a resistor to supply but just for start- up Reply Ray Ray on July 17, 2014 at 1:40 pm Nice experiment but you didnt specify coil winding ratio ….also…Not sure if truely convincing… I have a handy multiscrew driver tool flash light built in. The flashlight It only has 1 LED + RESISTOR running off an AAA single battery.. Its been over an month since ON and got lost until few days ago found behind my shelf still ON … So an other words eliminate your components out of the equation to match above with 3000uf capacitor instead of AAA battery it would last just as good and no rippling wave side effects. Assuming capacitor gets a boost of voltage in parallel. 3000uf cap is a battery like with fast charge and hold as charged capacity of voltage (jouls) for a short term depending on LED mfg + right resistor value yields extended light up time (minutes to months) its all about efficiency vs mfg spec of LED required voltage and current flow Harbor freight has a 3$ flash light that has 24 LED running on 3x AAA last over two month lol… my point is this… Proper resister value with LED to limit current you can discover interesting power efficiency that most people seems to miscalculate which can have better yield. Go harbor freight get one and take it apart no need transformer Reply Thomas TS. on July 20, 2014 at 11:30 pm It is sad that no one yet showed tips about how to build the coils. Type and size of the core, how many turns and wire gauges… As tis is the hart of the system. That one about the crystal cell was enough to do replications and i have one ruining a LED right now… Reply danimal on January 28, 2015 at 2:39 am hi ray ray, can’t really follow what you’re saying (probably my fault as my knowledge of this topic is weak) but are you saying a capacitor 3300uf should be better than a rechargeable 1.2v? Or are you saying his results are not convincing, or not needed because a harbor freight led can run for a month continuously on a single battery? Reply Travis on October 27, 2015 at 12:05 am How do I use this to run a crystal set radio? Reply Bob_berg on November 11, 2015 at 11:00 pm “Same current draw” as measured by the analogue DC micro ammeter ? How can you claim they are identical? The DC draw is indeed 16ua, no doubt. The draw from the ringer can be anything you like, this device is not designed to measure it. When you connected the scope you saw the shape of the ringer signal, how is the DC meter going to make heads or tails of this? This is not a criticism of your work, well done and keep it up, just pointing out that you measuring experiment is somewhat flawed. The high harmonics component of the ringer signal will have a totally unpredictable effect on the meter rendering all the measurements useless. Reply vasile on November 21, 2015 at 7:50 pm Unfortunately it cannot compare the current draw by LED’s in oscillator and in DC arrangement using the microammeter. In the oscillator circuit only half of the energy is used for lEDs supply. A correct measurement implies a two channel oscilloscope with math capabilities (AxB). One channel measure the current flow, on the other the voltage drop across the LEDs over the entire discharging process. A truly floated scope is needed (battery supplied) because any ground connection adds energy in the system. This energy is just the 50/60Hz environment noise, nothing fancy. Is easily visible how the noise is injected in the oscillator when ground connection exists. A ground is as noisy as many devices are using that ground (like a mechanical shop). Don’t search for overunity COP here, there isn’t. Reply xenophed on December 9, 2015 at 12:29 am DC current draw is a static function that is BEFORE the ringer example if I take a capacitor hooked to a battery and place a current meter in-line from battery to the cap that will be a static measurement NO MATTER WHAT HAPPENS AFTER THE CAP Reply vasile on December 9, 2015 at 7:47 am Xenophed, you have right. Please do a power balance for this circuit as follows: 1. measure the energy stored in your capacitor. Don’t forget that charging a capacitor from a battery is not a linear process. If you want to do it using a DVM without noticeable errors you need to charge the electrolytic capacitor under constant current. The charging energy is equal with charging time x voltage x charging current. Under constant current charge only, the voltage across the capacitor will rise linear from zero to battery voltage. As shown now in the experiment, charging voltage is exponential. Without a good scope you will never know exactly which is the energy used for charging the capacitor. 2. measure the energy used by the oscillator to discharge the capacitor. Discharging energy is equal with discharging time x voltage across the capacitor x current eaten by the oscillator. Since the voltage across the capacitor drops slowly, you need to measure it with a scope or other voltmeter which can be connected on a computer and offer data for the whole discharging process Do this step with and without an earth connection to the circuit. I did all this measurements because the circuit is interesting for energy harvesting purposes. Please do yourself the same and you will understand. Then post your measurements. best wishes, Vasile Reply Vasile on December 9, 2015 at 7:48 am Xenophed, you have right. Please do a power balance for this circuit as follows: 1. measure the energy stored in your capacitor. Don’t forget that charging a capacitor from a battery is not a linear process. If you want to do it using a DVM without noticeable errors you need to charge the electrolytic capacitor under constant current. The charging energy is equal with charging time x voltage x charging current. Under constant current charge only, the voltage across the capacitor will rise linear from zero to battery voltage. As shown now in the experiment, charging voltage is exponential. Without a good scope you will never know exactly which is the energy used for charging the capacitor. 2. measure the energy used by the oscillator to discharge the capacitor. Discharging energy is equal with discharging time x voltage across the capacitor x current eaten by the oscillator. Since the voltage across the capacitor drops slowly, you need to measure it with a scope or other voltmeter which can be connected on a computer and offer data for the whole discharging process Do this step with and without an earth connection to the circuit. I did all this measurements because the circuit is interesting for energy harvesting purposes. Please do yourself the same and you will understand. Then post your measurements. best wishes, Vasile Reply xenophed on December 10, 2015 at 1:13 am Done as follows battery > resistor > cap to 2/3 supply from battery I.E. 12 volt battery and cap at 7 – 9 volts current is constant and NOT MEASURED IN-LINE BUT ACROSS THE CAP that is how I derive my current measurements as mos amp meters will not go to a low enough range set meter to uVolts Reply xenophed on December 10, 2015 at 1:16 am measured across an in-line resistor not in-line current meter battery to resistor to cap and the resistor is such a value that the cap voltage is lower than battery Reply xenophed on December 10, 2015 at 1:29 am this video shows what I am talking about https://youtu.be/dWJbKO3smlE Reply andrew on March 13, 2016 at 10:36 pm how doi wind that pot transformer Reply Vasile on March 27, 2016 at 8:01 am Andrew, primary is 100 turns using 0.18mm enamelled copper, secondary 300 turns using 0.10mm enameled copper. It works with different wires thickness as well (0.30mm primary, 0.18mm secondary). The longest time you may get the LED light (if this is your objective) is a about one hour starting from 9V supply and more than 1000uF. As lower the current flow to the LED, as longer time will lit. The ferrite pot is O30 (30mm outer diameter, 19mm height, AL=5000). Once again, do not search for overunity gain in this schematic, there isn’t! Reply Submit a Comment Cancel reply Your email address will not be published. Required fields are marked *Comment characters available Name * Email * Website Time limit is exhausted. Please reload CAPTCHA. + = Notify me of follow-up comments by email. Notify me of new posts by email.