How to Generate Electricity from Heat or Body Warmth

The present design exploits the above property of tunnel diodes by having a series connected set of these devices charge a battery with the aid of solar energy


The operating principle of this unique design is remarkably simple. 

 As seen in Fig seven or more Gallium-Indium Antimonide (GISp) tunnel diodes are series connected and titted on a large heatsink, which does not serve to dissipate their power (tunnel diodes get colder as Ur rises), but to effectively accumulate solar, or otherwise applied, heat, whose energy is converted into a charge current for the NiCd battery

When the load is itself a voltage source with fairly low internal  resistance, the negative resistance must, of course, output a f higher voltage for the charge I current, Ic, to flow: 

If a normal, pure, resistance, R, discharges a battery with current I=V/R, a negative resistance charges the same battery, since the sign of reverses —I:V/—R. Similarly, , when a normal resistance  pates P=PR watts, a negative  resistance delivers this wattage into the load; P=—l2—R.

The following circuit may be used for generating electricity from heat or warmth.

Credit- Elektor electronics

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BRIGHT FLASH FROM FLAT BATTERY 3v WHITE LED FLASHER

BRIGHT FLASH FROM FLAT BATTERY
This circuit can flash a white LED, on a provide from 2v to 6v and turn out a really bright flash. The circuit takes regarding 2mA and recent cells are often used. the 2 100u electros in parallel produce a much better flash when the availability is 6v.

3v WHITE LED FLASHER
This will flash a white LED, on 3v provide and turn out a really bright flash. The circuit produces a voltage on top of 5v if the LED isnt in circuit however the LED limits the voltage to its characteristic voltage of three.2v to 3.6v.   The circuit takes regarding 2mA an is really a voltage-doubler (voltage incrementer) arrangement.
Note the 10k charges the 100u. It doesnt illuminate the LED because the 100u is charging and also the voltage across its invariably less than 3v. When the 2 transistors conduct, the collector of the BC557 rises to rail voltage and pulls the 100u HIGH. The negative of the 100u effectively sits just under the positive rail and also the positive of the electro is regarding 2v on top of this. All the energy within the electro is pumped into the LED to supply a really bright flash. 

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500W Mos Fet Power Inverter from 12V to 110V 220V

 500W Mos-Fet Power Inverter from 12V to 110V/220V

This circuit will provide a very stable "Square Wave" Output Voltage. Frequency of operation is determined by a pot and is normally set to 60 Hz. Various "off the shelf" transformers can be used. Or Custom wind your own FOR BEST RESULTS. Additional MosFets can be paralleled for higher power. It is recommended to Have a "Fuse" in the Power Line and to always have a "Load connected", while power is being applied. The Fuse should be rated at 32 volts and should be approximately 10 Amps per 100 watts of output. The Power leads must be heavy enough wire to handle this High Current Draw!

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