Thursday, January 24, 2019

5 times MORE power from a DC/DC Buck Converter? Or Magic Smoke: Watching movies while bicycle charging the Chafon 500 watt lithium generator/battery?

So I got bored with "trickle charging" the Chafon since 1 amp - while in the lowest gear to stay under 18 volts - there was still some resistance (since I have so much inefficiency in the Belt - it's not straight, there's duct tape, the belt width is cut evenly). Basically it's a MESS but I like messes as they are more "wild."

So then through research - I realized that if I get a DC/DC Buck Converter - this will enable me to "step down" the higher voltages from pedaling faster - while not only NOT losing the amps (as a PWM solar charge controller would do) but actually INCREASING the amps (as a MPPT solar charge controller would do).

Based on my previous blogspot
22 volt = 2.75 amps = 60.5 watt
12 volt = 5.041 amps
So above 12 volts.
22 volts is maximum with minimum as 12.2 volts

So this is all very "nerdy" - unless you realize that based on OHM's LAW - then simply increasing the bicycle pedaling to between 1.5 to 2 wheel rotations per second - or 22 mph - then I get 22 volts which steps down to the Maximum battery charge load of 5 amps. As this electronics guru details - the DC/DC Buck Converter is also a Current Regulator (as per Ohm's Law). Fascinating.

This would be 5 times more amps while at the just above the minimum input volts to the Chafon - which has a 12 to 18 volt and 2 to 5 amp charge controller input range.

2.18 V is the maximum.
PER CELL FOR CELL BALANCING - 36 cells. So 97 volts total x 5 amp = 485 watts total storage.
Lithium Ion battery

Also I would burn more fat calories - to lose weight (instead of just tooling along in the lowest gear at an easy pace at only 1 amp trickle charge)....

So this is potentially a big improvement since when I was in the highest gear on the bicycle then I kicked out 80 volts (average) - some more some less. So to do 22 volts average will be not too difficult.

So then I got a FREE television on Craig's List - a 1991 CRT Emerson. I then got an RCA-RF  adapter plus a coaxial cable and the RCA cables with the DVD player. So today I enjoyed watching some movies while on the bicycle generator!

So that means I can live in the forest and charge the bicycle while watching movies! Because the draw - how many amps? Let's say it's 100 watts. Right - that's a 1.2 amp draw at 120 volts.

So today as I tried the "trickle charge" against the TV-DVD player - I slowly drained the generator of fuel (battery charge) - but I was able to enjoy a movie or two (or actually half of one and part of another). The bigger set back was that the FREE TV has a bad audio connection - so either I got no sound or tons of noise - and so with headphones (while NOT riding the bicycle) I was able to make out the dialog, etc. haha.

So I am soon to get the DC/DC Buck Converter as delivery. I am studying now how to use it. This is what it looks like.

I think Amazon removes images. I'll try another site.

Is this it?

No but real similar - same company.

So the comments says - a person uses a 9 volt battery to charge their cell phone!!

So that's why this device is also called a universal battery supply or something like that.

Buck essentially means "down converter" while Boost converter is another name for step up in voltage...

So since the bicycle is for 130 volts - and I need 12 to 18 volts - then I need a Buck or Step Down converter, so I can increase my bicycle voltage. But again the advantage here is I am also increasing the amps as a power amplifier!!  So it has an inductor and capacitor and diode, etc. I don't understand how all these things interact -  I have been studying this device but don't have it mastered (quite the opposite)....

 In a buck converter, the schottky diode (that you may be referring to) is absolutely needed. Don't even think about leaving it out - you'll be just wasting your time. When the transistor "opens" after pushing current into the inductor, that current needs to keep flowing to carry on passing energy into the output capacitor. Without the diode (schottky or otherwise) this current can't flow into the output cap so instead it creates a big voltage spike and destroys the switching transistor in the chip.
[DC/DC Buck Converter] decreases the voltage output, based on the duty cycle D of the mosfet (Barbi, 2008). This converter, however, does not take in consideration the characteristics of the source and the load.
 A MOSFET (metal-oxide semiconductor field-effect transistor) is a specialized FET (field-effect transistor), and like all transistors, is used for switching or amplifying signals. MOSFETs are now even more common than BJTs (bipolar junction transistors) in digital and analog circuits.
 A small capacitor will "ride through" short voltage dip but will not provide any output for an extended (more than a few seconds) outage.
Yes actually I was getting Buzzing Charge from that Emerson TV today - so it is not safe to us - as it has loose connections. But at least I had fun watching a DVD movie for the first time while it being powered on the generator and the bicycle charging the generator at the SAME TIME!!

And this brings us back to meditation energy training. The lower Tan Tien must then be also a Buck Converter - meaning even though the voltage goes down, the Amperage Increases - as the brain produces the 25 watt average....

Again just as with a DC/DC Buck Converter - I don't understand all the circuitry of capacitors, inductors, diodes, etc. haha.

I'm quite excited though since on the "Treadmill DC motor as bicycle generator" subculture info - it's clearly noted that since Treadmills have this high volt with high RPM - therefore it is difficult to get much power out of a bicycle use of the Treadmill DC motor. So the lower the voltage rating, the more amps you can get out of the motor. Since my motor has 130 volts instead of  90 volts - then it requires more RPMs (revolutions per minute) to increase the amps. But with this "converter" - then the lower volts are INCREASED in amps.

Before I was reading a book, "Christ in Egypt" while charging the generator. But holding a book is tedious. You need better lighting ( a head lamp) - you have to maintain balance better while holding the book so it doesn't jitter - and this position makes the body not last as long since it's less relaxed. Also the left-brain focus of reading goes against the right brain focus of exercise. Sure if you're "speed reading" as I used to do - then it is ok to sit in full lotus. But full lotus is not the same as pedaling a bicycle.

And yet Magic Smoke is a common ingredient:
 The given device operates until the smoke is released from it, at which point the device ceases to operate. Ergo, the smoke is an essential part of the device's operation, through undetermined ('magical') means.[2] The joke's humor operates via the logical consistency of what is observed, versus knowledge of what is actually occurring. This is an example of the fallacy post hoc ergo propter hoc.
YES someone did this already and posted a vid! Bicycle Generator with DC/DC Buck Converter!

pdf - how to build a DC/DC Buck Converter

I am getting a DC/DC Buck inverter to increase the amp output of my bicycle generator. I did watch a couple DVD vids today while trickle charging - but the FREE craig's list tv had a loose audio connection. Anyway so I realized I should get 5 times more amps - with not much more voltage (bicycle pedaling). haha. The lithium battery has low resistance. yes - I wondered - will this work? Suddenly I discovered This Dr. Strangelove Accent dude. His voice sounds EXACTLY like Dr. Strangelove. It's hilarious. https://www.youtube.com/watch?v=LK6zZzy-JV8 He has the SAME thing - same exact set up. ONly he built everything from scratch - the DC Buck converter and even the battery generator-charger (UPS). Wow!

So here is this same concept as a standardized product - the K-Tor Pedal power generator to charge lithium batteries and inverters   for off-grid AC power!

It's only 20 watts - but he said he's developing a bigger one...

With slower pedaling the force goes up in proportion to the reduction in speed for the same power and this requires heavier components in the entire power train, more cost weight etc and w felt less comfort. Faster and the opposite but we again thought less comfort so we chose what we thought would be the most comfortable to pedal long term.
In other words - a trickle charger!
 This generates 20W at 12V which equals 1.667A.
The New bigger K-Tor - released last month!! 50 watts?

But HOW MANY AMPS?

3 amps....

yep I'm shooting for 5 amps!!

Wow - $400.

So I've probably spent - on the bicycle generator? Free DC Motor but I had to buy tools ($100). So probably $150 to $200 - but hopefully it will be more powerful - plus I have the stand to sit...


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