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DIY Schumann resonator?
DIY Schumann resonator?
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Old 17th October 2017, 12:40 PM   #231
protos is offline protos  Greece
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What are you measuring with by the way?
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Old 18th October 2017, 09:08 AM   #232
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i measured it with a simple but good multimeter.
I tested the meter on other frequency projects and
its working fine.
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Old 18th October 2017, 12:06 PM   #233
protos is offline protos  Greece
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Could be oscillating. I found this a common problem if the chip is not set up correctly. Is it using the 555 timer chip? I see a lot of extra components, mainly caps and resisitors, compared to mine. I see a pot. Perhaps you could tweak that and see what it is doing to the output.
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Last edited by protos; 18th October 2017 at 12:17 PM. Reason: addition
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Old 18th October 2017, 12:28 PM   #234
protos is offline protos  Greece
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There was a lot of discussion on the "scientific" justification and a lot of flaming since I started this thread. Much like discussions on cables sound differences etc. The issue here is firstly that it is extremely easy and cheap to build even for a beginner - so there is not much to lose-and secondly that if it "works" for the person that built it then that is all that matters.
All the rest is opinion and gossip which can be fun but do not impact the above.
As I mentioned in the beginning quite a number of audiophile friends found the effects tangible and reported similar type of experiences that many in this thread reported as well. I find it interesting that many describe in different words very similar experiences. Not just "this is better".
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Old 18th October 2017, 03:28 PM   #235
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only with the original acoustic revive i noticed a improvement.
The ones build by myself couldn't reach that effect. that's why
i bought the one from ebay. But i do not notice any differents.
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Old 19th October 2017, 07:02 AM   #236
protos is offline protos  Greece
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Interesting. How did you make yours?
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Old 19th October 2017, 08:49 AM   #237
toetertje is offline toetertje
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Made a few simple versions with a 555 timer.
With a self wound antenna. Looks a lot like the ebay version.
Even tried it with a little 3 watt audio amplifier after the 555.
No luck either. It was possible to set the frequency at 7.83 Hz,
but no effect.
Do you have a schematic and photo of yours please?
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Old 19th October 2017, 12:26 PM   #238
protos is offline protos  Greece
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Let me check. But essentially I followed the ne555 sheet and at the output of the 555 is a bog standard mosfet follower. You got me interested in this again and I ordered some ne555 's . I need to make a couple more since the ideal is between two and three units. i had ordered some 555's from china but they would not work at all. Now I ordered from what I hope is a better european seller. It would be interesting if you could trace the RR schematic from the pcb. I see from pictures that the power smoothing is with some capacitance and I see some diodes or zeners there? Then there a lot of resistors a pot and quite a few small caps probably to decouple the chip? Is it a 555? And then I see a transistor at the output.

Could your 3 watt amp drive 7.83 hz?
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``The author always assumes that when power is applied , the amplifier will explode or ,at the very least, catch fire.创
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Last edited by protos; 19th October 2017 at 12:33 PM.
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Old 19th October 2017, 01:03 PM   #239
toetertje is offline toetertje
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i don't have the original acoustic revive anymore.
I only have the imitation from ebay. That schematic
is not easy to figure it out. (doublesided) There are indeed 2 4V zeners.
The 555 chips i used myself are originals.

Looks that the transistor only is connected to the led.
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Old 23rd October 2017, 09:27 AM   #240
protos is offline protos  Greece
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For those who would like to experiment cheaply with the schuman frequency without sourcing and soldering too may components you can order up a few of these
NE555 Duty Cycle Frequency Adjustable Module Square Wave Signal Generator | eBay
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