Max 3232 in old universal box - GSM-Forum

foufou · 11-07-2003, 00:50

i have old universal box based whit Max 232
can i change just Max 232 whit Max 3232
or i nned other change in the box, if yes
please shemas for univirsal box whit Max 3232
thanks for all replay

SPUnlock_SK · 12-01-2003, 09:47

you may change MAX232 to MAX3232 but you must change supply from 5V to 3V because MAX3232 is 3V IC

foufou · 12-01-2003, 09:50

how to make
shematic please

mr_x4you · 12-01-2003, 21:40

Wrong !! 3232 can be powered between 3,6 and 5v !!! replace 232 with 3232 and change also pump capacitors to 0,1uF. If you supply 3232 with 5v, your peak on tx will be 3,6v, if you supply with 3,6 peak will be 3 V.

foufou · 12-02-2003, 09:46

i change just 10uF capacitors to o,1uF?
or all pump capacitors 10uF(4ps) + 47uF(1p) + 470uF(1p) ?
big thanks for replay

cniky · 12-03-2003, 05:20

replace just 10uF capacitors with 0,1uF.

foufou · 12-03-2003, 07:53

Quote:

Originally posted by cniky
replace just 10uF capacitors with 0,1uF.

big thanks

11-07-2003, 00:50	#1 (permalink)
foufou No Life Poster Join Date: Dec 2002 Location: Mouscron/ Belguim Age: 46 Posts: 1,260 Member: 18703 Status: Offline Thanks Meter: 330	Max 3232 in old universal box i have old universal box based whit Max 232 can i change just Max 232 whit Max 3232 or i nned other change in the box, if yes please shemas for univirsal box whit Max 3232 thanks for all replay

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12-01-2003, 09:47	#2 (permalink)
SPUnlock_SK No Life Poster Join Date: Jul 2002 Location: Slovakia Age: 43 Posts: 1,535 Member: 13922 Status: Offline Thanks Meter: 334	you may change MAX232 to MAX3232 but you must change supply from 5V to 3V because MAX3232 is 3V IC

12-01-2003, 09:50	#3 (permalink)
foufou No Life Poster Join Date: Dec 2002 Location: Mouscron/ Belguim Age: 46 Posts: 1,260 Member: 18703 Status: Offline Thanks Meter: 330	how to make shematic please

12-01-2003, 21:40	#4 (permalink)
mr_x4you Registered User Join Date: Jun 2001 Location: x Posts: 3,295 Member: 4989 Status: Offline Thanks Meter: 13	Wrong !! 3232 can be powered between 3,6 and 5v !!! replace 232 with 3232 and change also pump capacitors to 0,1uF. If you supply 3232 with 5v, your peak on tx will be 3,6v, if you supply with 3,6 peak will be 3 V.

12-02-2003, 09:46	#5 (permalink)
foufou No Life Poster Join Date: Dec 2002 Location: Mouscron/ Belguim Age: 46 Posts: 1,260 Member: 18703 Status: Offline Thanks Meter: 330	i change just 10uF capacitors to o,1uF? or all pump capacitors 10uF(4ps) + 47uF(1p) + 470uF(1p) ? big thanks for replay

12-03-2003, 05:20	#6 (permalink)
cniky Freak Poster Join Date: May 2003 Location: Romania Age: 43 Posts: 135 Member: 29394 Status: Offline Thanks Meter: 0	replace just 10uF capacitors with 0,1uF.