USEFUL Circuits and Devices

This first circuit is use for timing purposes with an alternative to the 555 timer. many times a Schmitt trigger inverter can be used to build a timing circuit that has a much squarer signal that may be needed with less complex circuit.



here is a 741 variation that has adjustable capacitance and resistance to alter the frequency. it have a much sharper waveform then that of a 555 timer.



here we have an adjustable power supply that can supply up to 15 amp with voltage adjustment to from 4.5 to 25 volts



i will add much more circuits as i have downloaded many on my computer which i will slowly post them.if you have a useful circuit please post it for others to enjoy.

Regards,
Marathonman

Here is a very useful and simple induction heater that can be used for many things even to heat the water in an Aquaponic system in the winter time to protect the fish and microbes. with a metal pipe in place of a iron piece in between the poles that water will be heated very fast. it could even be used to heat chemicals flowing though the pipe or other things.



all that one needs is an additional heater control like below or other heating system circuits.



I know that i will be trying to use this type of system in an Aquaponic system to heat water in the winter.

Regards,
Marathonman

Here is an interesting reluctance or rather magnetic motor with the possibility of BEMF recovery. this motor has the ability to yank your arm off if you try to stop it. could be of some very good uses in the future when i move to a sustainable community.



Here is another magnetic motor from a book from 1910 or so with the same properties as above.



and last but not least the reluctance motor.



Regards,
Marathonman

Here the first pic is a Tesla circuit from electricity and magnetism book from 1910. a step up from ordinary household AC to many, many volts and also an increase in frequency.

and the second pic here is the Tesla device that got over on the patent office. and yes this device puts out more then it takes to run it.

Regards,
Marathonman

Here is another very interesting device. it seams it uses a magnet attracted to a core and coil which is switched at almost top dead center to repell the magnetwich will continue through the stroke. i would love to build it but no funds.




Regards,
Marathonman

The iron pipe is solid iron not laminated so there will be lots of eddy currents in it which causes friction as the magnetic domains are switched back and forth thus producing heat and transferred to the water. the transformer being laminated will not heat up like the pipe will. this is in place of G in the diagram.
it would even be better if you can find a 400 hz core that way the pipe or what ever you have between the transformer poles will heat up rather fast. the circuit to control this is rather straight foreword and simple.
it would be to one's advantage to put some kind of heat shield to protect the transformer or around the pipe like a ceramic cylinder or collar.

Regards,
Marathonman

Here is the ambient lighting i am working on to light up Van Camper number signs on the ranch. wire looks huge on tiny board but it is stranded 18 awg. resistors are being changed  to smaller wattage as these were on hand. this will allow it to fit in the battery and electronic case from all electronics. batteries are in 26650 single battery holder with solder pins.









Simple circuit that is no bigger then your thumb yet solar charges the battery then activates at night. if you look close you can see Vapcell 26650 battery @ 3.7 v 5300 mah for 5 bucks a piece from this online dealer. Vapcell Link they are direct from Vapcell and the price can NOT BE BEAT BY ANYONE.

these are so awesome and stay on all night long with 4 led's with a voltage drop of only .10 volts. measured at 3.61v, 12 hrs later 3.51v.
PS. makes for an awesome flashlight battery.

Regards,
Marathonman