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Old 11-27-2009, 02:39 PM   #21 (permalink)
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also 12v-220v inverter (500W) has arrived
it will be used for solar pannel chardger (240W/h top)

pictures atached
i will need to remove some cooper from transformers (2x 12/220v - yellow ones) to get 144v but now is working on 220v

for now i have plugged 300W halogen lamp and convertor is working nice
i have top 240W from solar pannels so is enough for me

for test the converter is plugger afer the modified computer power supply and i have tested both and are working nice

i am wainting for new solar pannels to test it in real life

this converter also needs an new sealed case made from cooper and i need to remove the fan

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Old 11-30-2009, 06:19 AM   #22 (permalink)
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in car panel computer

modified eeepc 701 4G 7" display
can be used to get real time data from controler using RTD Explorer


power used less than 12W

can be foud on ebay around 100USD

now i need to find an case 225x140x40 for pc (i will use eepc LCD frame)
i have ordered an touchscreen interface so thet you can access menus and type without keyboard price 30usd

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Last edited by jerpelea; 12-05-2009 at 09:36 AM..
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Old 12-09-2009, 02:13 AM   #23 (permalink)
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update


144-12v 2x17A converter is almost ready (now packing in case for car instalation)
144-12v 4A for computer and controllers is ready (now packing in case for car instalation)
12-144v 500W inverter is ready (fets changed,transformators rebuilt) (now packing in case for car instalation)

220-144v car charger (testing small scale)

10-12batteryes BMS is ready (in testing phase)

car computer is almost ready (waiting for touch screen)


i will updload pictures later
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Last edited by jerpelea; 12-11-2009 at 01:23 PM..
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Old 12-11-2009, 01:22 PM   #24 (permalink)
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dc - dc converter is ready almost finished assembling it
now we have the down converters ready
144-12v 17x2A for lights and breaking pump
144-12v 4A for pannel computer and controller

2 independent converters in the same box

i have removed impute ac-dc bridge and i am injecting dc directly into it

i have also moved all power components to the big aluminium heatshinks



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Old 12-12-2009, 09:28 AM   #25 (permalink)
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waiting for the rest of parts

for now working on batery monitor

we need to know if batteries are leveled so me measure each batery and use an 10 led bargraph to indicate its state

10 identical 12V bargraph voltmetters based on lm3914

bargraphs are easy to read when driving !
we have an digital volmetter to measure battery pack voltage (whole pack)
and this bargraph to measure the remaing power for each battery

we have chosen 10 leds bargraph (DC10GWA) with last 3 red to know when the batery is nearly deplition (11.2V) so that we will not destroy the battery

also voltage levels can be ajusted individualy

for separation we have used quadruple optocuplers (3 of them) to be shure that high voltage can not break anything

this can be mounted on secondary radio bay or in our case in the center on console (where were old warning lights for preasure,etc...)

cost for the whole 10 voltmetters is around 20USD

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Last edited by jerpelea; 12-12-2009 at 09:34 AM..
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Old 12-13-2009, 10:47 AM   #26 (permalink)
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DYI Dolar charger

i blew the chinese 500W converter at tests with 200W halogen bulb in around 2 hours

upset i decided to build my own

it consists in 3 blocks
clock generator with 555
flip flop switch 1/2 of 4013
power block 2 BUZ48 for every 250W of load
i have reused the old ferite transformer and rewired it for my needs


i have tested this converter with 200W load for 1 day and is still working
(not from the test battery but from my 12V 2x17A dc source )



for battery charger it needs an ac/dc rectifier and an operational as comparator (to monitor charging currrent and stop charging at full battery)


final one has 4 fets (to be shure that it resists in time and prevent overheating)
i have also added 2x200cm2 aluminium raditors
now everthing stays at 43C

price 18USD


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Last edited by jerpelea; 12-13-2009 at 11:47 AM..
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Old 12-13-2009, 10:55 AM   #27 (permalink)
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Old 12-13-2009, 11:57 AM   #28 (permalink)
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Start investgating cheap/small brake pump
i have used an tire compresor that can go to 12 atm and reversed the valve
now i am searching for an vacuum tank 1-2l so that we can stop the pump and start it only when preasure goes below 4atm

the pump is realy small 80mm by 35mm and realy quiet (can be heard )


cost of pump with gauge 7 USD


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Old 01-16-2010, 11:42 AM   #29 (permalink)
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finaly some progress
car came from painting ...
now the real work begins
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Old 01-16-2010, 11:48 AM   #30 (permalink)
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that looks great!

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