Joule Thief

[stprue]

@Groundloop

The circuit have there looks great.  I look forward to seeing what it can do.

[totoalas]

@Groundloop,

                 This schematic of Joe Tate's circuit shows your !00% right about the capacitor and diode direction:

Moderator: The circuit drawing was posted to times. I deleted one of them.

In my modified version,  C1 and C2   removed, C4 polarity is reversed  and cap values are 4700 uf  35 v   and all in4007 diodes
I can charge the cap from 0 to 12 v in less than 4 minutes   using AC Neutral as antenna and Earth ( from water pipe ) as ground
I can light for a second a 12 v dc 3 watt led lamp ,  and a 3w ac led lamp will flash  slowly
the original tate circuit ( same circuit with c4 reversed polarity  and in4148 diodes used ) my meter reading in the 500 v dc scale is 210 and will flash a 3 w ac led lamp slowly (AC neutral RF Charger  Load)  imtotob  YT
will see GL's AMP2       
totoalas

[conradelektro]

High frequency ambient energy receiver needs high frequency diodes:

For the 50 Hz mains hum, AM radio transmitters and even FM radio transmitters the receiver circuits shown above (the many diodes receiver and the four diodes receiver) will work with "ordinary diodes" like the 1N34 or the 1N4007.

But if one wants to hook into the cell phone towers, WIFI hot spots or WLANs, high frequency diodes are necessary (up to 10 GHz). The one I found is the HSMP-389x series (see the attached data sheet, look at Figures 10 and 11).

Would be nice if someone found other high frequency diodes in the GHz, please specify them here.

Greetings, Conrad

[Pirate88179]

I think I found some here:

http://www.insight-product.com/60_GHZ.html

If you scroll down you can find diodes from 33-140 GHz.  Maybe too high for wi-fi and cell?

Bill

PS  Better choices here:

http://www.macomtech.com/pin-switch-and-attenuator-diodes

[conradelektro]

I think I found some here:

http://www.insight-product.com/60_GHZ.html

If you scroll down you can find diodes from 33-140 GHz.  Maybe too high for wi-fi and cell?

Bill

PS  Better choices here:

http://www.macomtech.com/pin-switch-and-attenuator-diodes

@Pirate: specially your second quote looks interesting, but I doubt that they sell small quantities.

I also got the HSMS-282x series diodes. The forward Voltage is as low as 0.34V at 1 mA and they should handle a few GHz. (From the data sheet, see page 8: The HSMS‑282x family, with its wide variety of packaging, can be used to make excellent mixers at frequencies up to 6 GHz.)

I will try the diodes I have got and in case of success I will try to find better diodes. The WLANs here are at 2,4 GHz and 5 GHz. In 2014 they want to sell WLANs in the 60 GHz range, but not yet.

Greetings, Conrad