Sunday, December 26, 2010

Dirty Honda C70 Passport Carburetor

I intended to mod this carb into my version of 'Carburetor Enhancer'. I get the inspiration from George Wiseman of Eagle Research.
Before modding it, I thought it would be cool to snap some pictures of it before the mod was done.
Here's some pictures of it, fully disassembled, showing multiple parts, at dirty state, of course...
Interestingly enough, the bike was abandoned just for couple of months, and now, everything is badly clogged up!

I will try to update my post soon after the mod was done and runs right...
See ya later!

Saturday, October 2, 2010

Convert PC ATX PSU into Lab PSU

Lately, I'm been playing with some heavily sulphated LA-batteries. Some are small, others are big.
Realizing I need a better power supply to charge those batteries in parallel, I intended to buy high-current transformer. Unfortunately enough, the price are way too high for me.

Stuck? Not yet! I suddenly just noticed that I have bunch of old PC PSU lying doing nothing in my storage box.
I did convert some of those into my lab PSU. But, the voltage is kinda fixed. Almost no chance of charging those batteries.
I Google'd on how to convert those PSU into variable SMPS.
Then, I found this site: Uzzors2k.

So, here's my version:

The victim



The 10k pot.

Yeah, I'm lazy to clean those junks! Lol!
(Two black-coloured wires connected to the pot.)


12V, 40W, being lit with 3V supply from the PSU.

Showing the power output without the mod.

I can vary the voltage up to 13.7V before cut-off triggered.

Now, the PSU is being tortured! I'm running an automotive air-cond blower.10 amps!

Here's the output when I turned the pot. Can't go higher voltage, connecting wire is too hot.
(I'm using cheap wire, :-P)

I even try to charge this battery cell. 2V of course.

Here's the stock output.

Here's the output at 3.3V rail with the mod

This is the voltage without the load.

Well, I guess that's it! I don't know what to type. Way too tired.
I now have a new battery charger!
I'm very happy with the mod done. Thanks Uzzors2k for supplying great instruction!

See ya' later!

Thursday, April 22, 2010

The Homemade Blade-less Fan

Hi y'all!
Recently, in my tiny lab, I've been playing with HV stuffs. Lots of fun!
As the byproduct, I just built something which can provide tiny thrust. I don't know what to call it.
It could be an air ionizer, ozone generator, particle accelerator, lifter, or a blade-less fan.
I choose 'blade-less fan' as the title cause it sounds more catchy... Lol!!

Here's the vid:

As I increase the duty cycle, the HV output goes up. Thus, providing more thrust.
But, if I crank it up higher, the HV sparks is all over the place.
The fan performance is limited to the HV leaks.
It's still a primitive experiment though. 
For the next design, I'm planning to use more emitter and better HV insulation.

As usual, tell me what y'all opinion! Any feedback is greatly appreciated.

Friday, January 29, 2010

Capacitive Battery Desulphator Circuit!!

Several month ago, I promised to post the Capacitive Battery Desulphator Circuit to my viewers as soon as possible...
For some random reason, I don't know why, I've been smashed with tons of work to do...
My email inbox been flooded with request from many my viewers, including Myspace too (Musicallman)... Lol!!

I take some time today to draw the circuit, but, I don't know what software is best for the purpose.
So, please forgive me for the crappy schematic...


Now I need your help. Can any of you, suggest a good software for me to draw the schematics?
I prefer freeware, if possible...

I will wait for ya!!

Update 1st Jan 2013: 
Somehow I lost the circuit and too lazy to redraw it. What it does is charged two capacitor in parallel, and discharge it in series back into the battery. Intended to force high current to the battery.

It's actually a solid-state "The Ron Cole One-Battery Switch".