rqst: picture of the pcb layout - GSM-Forum

kst · 06-15-2003, 07:04

Hi mates,
I'm looking for a pcb of the subj.
Thanx in advance.
Alexei

wssiow · 06-16-2003, 04:57

hello,

which kind and which one?

kst · 06-16-2003, 06:56

I have a ttl 7404. Looking for a small ttl layout. Actually any working scheme. Plz give some advice what to choose.

sagarka · 06-16-2003, 13:52

try dejan scheme that was work

kst · 06-16-2003, 14:29

Do I need to use an external power and how many volts is it?
WBR,
Alexei

wssiow · 06-17-2003, 03:36

hello,

for my case, i use 9v external battery for input to regulator, then the regulator will output +5v.

From the dejan sche u will see 1 capacitor 47uF at top. From that point on, put the output +5v to it and ignore all the component before that point.

if u dun want to modify that circuit, it will work too. no need external power.

i modify it coz i using Laptop.

06-15-2003, 07:04	#1 (permalink)
kst Junior Member Join Date: Apr 2003 Age: 54 Posts: 26 Member: 27092 Status: Offline Thanks Meter: 0	rqst: picture of the pcb layout Hi mates, I'm looking for a pcb of the subj. Thanx in advance. Alexei

06-16-2003, 06:56	#3 (permalink)
kst Junior Member Join Date: Apr 2003 Age: 54 Posts: 26 Member: 27092 Status: Offline Thanks Meter: 0	Good morning I have a ttl 7404. Looking for a small ttl layout. Actually any working scheme. Plz give some advice what to choose.

06-16-2003, 14:29	#5 (permalink)
kst Junior Member Join Date: Apr 2003 Age: 54 Posts: 26 Member: 27092 Status: Offline Thanks Meter: 0	where does dejan's scheme get Vcc? Do I need to use an external power and how many volts is it? WBR, Alexei

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06-16-2003, 04:57	#2 (permalink)
wssiow Major Poster Join Date: May 2003 Posts: 44 Member: 29785 Status: Offline Thanks Meter: 6	hello, which kind and which one?

06-16-2003, 13:52	#4 (permalink)
sagarka Freak Poster Join Date: Apr 2003 Location: uk Age: 43 Posts: 489 Member: 26606 Status: Offline Thanks Meter: 6	try dejan scheme that was work

06-17-2003, 03:36	#6 (permalink)
wssiow Major Poster Join Date: May 2003 Posts: 44 Member: 29785 Status: Offline Thanks Meter: 6	hello, for my case, i use 9v external battery for input to regulator, then the regulator will output +5v. From the dejan sche u will see 1 capacitor 47uF at top. From that point on, put the output +5v to it and ignore all the component before that point. if u dun want to modify that circuit, it will work too. no need external power. i modify it coz i using Laptop.