Voltage Stabilizer Version 2

torxwrench · Posted: Wed Aug 22, 2007 7:51 pm Post subject: Voltage Stabilizer Version 2

These are the way overdue pix of Version 2 of the Voltage stabilizer. I finally cobbled the whole circuit together over the last weekend.

DISCLAIMER & WARNING

DO NOT ATTEMPT TO DIY OR TRY THESE CIRCUITS IN ANY WAY IF YOU ARE UNFAMILIAR, IGNORANT OR HAVE NO KNOWLEDGE OR UNDERSTANDING OF HOW ELECTRICAL OR ELECTRONIC COMPONENTS WORK, AS WRONGLY CONNECTING THESE CIRCUITS MAY RESULT IN YOU FRYING THE ELECTRICAL / ELECTRONICS SYSTEMS OF YOUR VEHICLE. ANY RESULTANT SHORT CIRCUIT MAY RESULT IN A SERIOUS FIRE HAZARD!!!

NEITHER 8GCC NOR I WILL BE RESPONSIBLE FOR ANY REPRESENTATIONS, MISTAKES, MISHAPS, ACCIDENTS OR UNTOWARD INCIDENTS AS THE RESULT OF ANYONE ATTEMPTING THESE CIRCUITS. BE FOREWARNED- FIDDLING WITH YOUR VEHICLE'S ELECTRICAL OR ELECTRONICS SYSTEMS CAN BE HAZARDOUS TO YOUR VEHICLE AND YOURSELF.

On with my project:-

Compared to the "low end" Version 1 using low spec 85 degrees C capacitors with a total capacitance of 5490uF ( estimated 64.000 hrs life- 7.305 years), this Version 2 unit has a total capacitance of 23,260uF based on hi-spec'd Japanese made Panasonic low impedance high temperature rated capacitors which should theoretically last about 256,000hrs (or 29.223 years of continuous "on"operating state, based on catalogue specs quoted by manufacturer) assuming the car's interior ambient temperature of 35 degrees C.

The Version 2 VS has replaced the Version 1 in its original location, ie just past the Ignition switch B+ plug (see other earlier VS thread).

Version 1 VS has been relocated to slot into the interior Fuse Block at Fuse No. 36 position which is IGN3 from the Owner's Manual. This is also a switched circuit i.e. it becomes "hot" when the key is left at position 2 after the engine has started. I presume this fuse protects the Ignition primary circuit side of the Ignition coil firing the spark plugs, but I may be wrong.

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THe 24 pcs of capacitors assembled on the circuit board.

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Copper side of the circuit board with parallel 'railway track' copper runs. Caps prior to soldering.

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The caps properly soldered onto the board.

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The completed Voltage Stabilizer unit, Version 2. Note that the fuse holder is a floating unit holding a 15-amp fuse in-line with the positive supply cable.

I have covered about 400+ km with both VSs installed. Apart from the earlier noted effects, the engine does seem to run even a little smoother. It also appears to be more willing to rev and it revs up faster.

Whether this is the effect of the recent oil & oil filter change at 6000km (2nd service), I am not sure. Can't tell whether fuel consumption has improved or not but the next 2000-3000km of town driving will tell.

As I will be travelling long distance again in the next few days in my ride, the long runs will show up any effects, if any, from the 2 installed VSs.

Will update this FR after the trip... Wink

shawida · Newbie Joined: 18 Mar 2007 Posts: 22

nice DIY mate...I assume you bought all the capasitors and the board at jalan pasar (is that right?) can you recommend me which shop (since there're lot of them) there sell those item at cheaper price ...

thank you Smile

casper · Veteran Joined: 24 Apr 2007 Posts: 351

bro, IMHO, these high capacitance may not help in FC as

1. it is not placed near the spark plug where high current pull may occur
2. it will only help to regulate the voltage level and neutralise current pull when air-con compressor kick in and so. the most it helps all the electronic devices within the cabin
3. holding the charges too long by big capacitance when u turning off ignition may bring harm to electronics as you delay or slow down the voltage decay, resulting pro long of voltage level in between certain IC Vil and Vih level, which are unknown state to most of IC... i guess Rolling Eyes

i maybe wrong, my 2cents Question

for very low impedance and high stability, u could try searching OSCON caps, it is good

torxwrench · Posted: Thu Aug 30, 2007 10:02 am Post subject:

shawida wrote:

nice DIY mate...I assume you bought all the capasitors and the board at jalan pasar (is that right?) can you recommend me which shop (since there're lot of them) there sell those item at cheaper price ...

thank you Smile

I got the caps from Farnell Subang jaya. From previous experience, the pasar rd stuff all have reliability probs. Cheaper yes, but also wasted time and money when parts break down.

Other good source is RS components in Glenmarie. Both suppliers also sell on-line.

torxwrench · Posted: Thu Aug 30, 2007 10:21 am Post subject:

casper wrote:

bro, IMHO, these high capacitance may not help in FC as

1. it is not placed near the spark plug where high current pull may occur
2. it will only help to regulate the voltage level and neutralise current pull when air-con compressor kick in and so. the most it helps all the electronic devices within the cabin
3. holding the charges too long by big capacitance when u turning off ignition may bring harm to electronics as you delay or slow down the voltage decay, resulting pro long of voltage level in between certain IC Vil and Vih level, which are unknown state to most of IC... i guess Rolling Eyes

i maybe wrong, my 2cents Question

for very low impedance and high stability, u could try searching OSCON caps, it is good

The Version 2 has been relocated to B+ just after ignition switch. The Version 1 has been relocated and plugged into Fuse No.36 at fuse block which I think is the low tension side of Ignition coils circuit. It doesn't need to be physically near the coils themselves to have the effect, as long as its wired to the circuit.

Version 2 is higher capacitance and covers the cars entire B+ power supply. On switch-off, the VS discharge is likely to be quite fast becos the VS stabilizes the entire car's power supply. Residual charge / decay is unlikely to affect any sensitive circuits or chips, I hope Exclamation

Version 1 is on the Low tension side of coils only and also very low total capacitance. Same effect as Version 2. I think both VSs also offer some degree of RFI filtration.

Yes, the VS seems to lessen the ac compressor 'kick-in' when the clutch engages. The click sound is now softer, and engagement also gentler.

The VS schematics based on what Bro ed supplied. Oscons, Blackgates etc all good stuff which I use for high end audio application. Expensive as well.