nikhil arora
- Mar 1, 2006
- 37
- Joined
- Mar 1, 2006
- Messages
- 37
Can any one suggest a Circuit for getting
3-5V DC @50mA from 230V AC without transformer
or any other ways.
3-5V DC @50mA from 230V AC without transformer
or any other ways.
3-5V DC @50mA from 230V AC without transformer
- Thread starter nikhil arora
- Start date
Hi
The circuit I have attached is from a Project in project section of this site with this topic.
" Courtesy Light "
you can use the power section of this project with some changes.
Once I saw a project on the web with this title." Transformerless Power supply" as I remember it has did the same trick.
HTH - Shahriar
View attachment 38604
The circuit I have attached is from a Project in project section of this site with this topic.
" Courtesy Light "
you can use the power section of this project with some changes.
Once I saw a project on the web with this title." Transformerless Power supply" as I remember it has did the same trick.
HTH - Shahriar
View attachment 38604
Tony_Stoynov
- Dec 20, 2005
- 197
- Joined
- Dec 20, 2005
- Messages
- 197
Hi,
in the post above, you can see ones of the possible decision, but this decision has one disadvantage, minimum dispersed power @50 mA is it around 5 W. If you not have a space for a big components, or you want cold device, the better choices is using of SMPS, i can suggest TNY series from Power Int.
Look here : http://www.mcu-bg.com/mcu_site/viewtopic.php?t=1052&postdays=0&postorder=asc&start=75,
you can see the TNY and TOP sch, also if you look at all topic, you can see the different diagram for directly 220 V power supply.
in the post above, you can see ones of the possible decision, but this decision has one disadvantage, minimum dispersed power @50 mA is it around 5 W. If you not have a space for a big components, or you want cold device, the better choices is using of SMPS, i can suggest TNY series from Power Int.
Look here : http://www.mcu-bg.com/mcu_site/viewtopic.php?t=1052&postdays=0&postorder=asc&start=75,
you can see the TNY and TOP sch, also if you look at all topic, you can see the different diagram for directly 220 V power supply.
Hi nikhil arora
Her you have your requested cirquit to get 3 to 5 Volt DC from 230 Volt AC without transformer, as a matter of fact, there is 2 of them, one with only positive output related to common, and one with both positive and negative output related to common.
[move]A little VARNING here! This is LETHAL![/move]
//Staigen
View attachment 38614
Her you have your requested cirquit to get 3 to 5 Volt DC from 230 Volt AC without transformer, as a matter of fact, there is 2 of them, one with only positive output related to common, and one with both positive and negative output related to common.
[move]A little VARNING here! This is LETHAL![/move]
//Staigen
View attachment 38614
can we glow a 3v led(@20-30ma) using above schematic.
iam also looking for such circuit.it is for powering a single led.i can't use transformer as there is no enough space.
i tried in groups(google) most of them look dangerous to me.
is there any safe design
iam also looking for such circuit.it is for powering a single led.i can't use transformer as there is no enough space.
i tried in groups(google) most of them look dangerous to me.
is there any safe design
audioguru2
- Apr 6, 2004
- 12,026
- Joined
- Apr 6, 2004
- Messages
- 12,026
The text in the 1st one says it is not efficient and is not safe.steev said:
The 2nd circuit is the same.
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