Hello. I have a problem, namely I have the need to convert alternating current from the converter to direct current. The converter has an adjustable voltage from 18 to 36V and 2A. Finally, it needs a current of 15Vdc / 14Vdc and 2A. I would not like to solder rectifier diodes, so I am asking for...

Any electronics store, start with looking for a stabilizer (L78S15), the rest should be standard capacitors, very common. these capacitors must be purchased at least 10 pcs If you have any questions, write to me and I will try to help. In another store you can also buy these items, I chose the first one where I buy and they have a large selection. IMPORTANT L78S15 stabilizer (15Volt 2 Amps), stabilizer on the heat sink.

Unfortunately, there is no need for a rectifier bridge, there are ready bridges for this filtration (two capacitors) voltage stabilizer and after the shout.

Thanks, but could you send me the diagram and the bridge. I don't know anything like that, so please. And what kind of capacitors

Hello - you can assemble such a thing; Added after 1 [minutes]: Capacitor of your choice; Added after 44 : Bridge ;

The scheme is very simple. You select capacitors according to the catalog note of the L78S15 stabilizer on input C1-0.33uF behind the stabilizer C4 - 0.1uF Electrolytic I give about 100uF at the input (at the appropriate voltage) behind the stabilizer 470uF - 1000uF In the diagram, I misspelled the stabilizer instead of the L78S15, I described the LM78S15

Any from here? My friend probably deigns to joke. What is this inverter?

Without a stabilizer, about 24V will come out, as you can see the founder of the topic needs 15V

You can buy a bridge ... but I'm not entirely sure if Schottky diodes will not be necessary in the case of the converter ...

Thanks marekhab but could you tell me where I can buy all this ??

Maybe such a bridge? At 2 amps, you'll probably need a small heat sink. Such bridges can be screwed to the heat sinks.

I don't understand a bit of the last sentence. Should I mount a heat sink on the stabilizer?

How to Convert 18-36V Adjustable AC from Converter to 15Vdc/14Vdc 2A DC - Ready Devices

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#1 16769721 21 Oct 2017 12:45

Wiejuk Wiejuk

Level 7

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Post #1
16769721 21 Oct 2017 12:45

Hello.

I have a problem, namely I have the need to convert alternating current from the converter to direct current. The converter has an adjustable voltage from 18 to 36V and 2A. Finally, it needs a current of 15Vdc / 14Vdc and 2A. I would not like to solder rectifier diodes, so I am asking for links to ready devices.

Thank you, please help me quickly.
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#2 16769825 21 Oct 2017 13:56

marekhab marekhab

Level 33

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Post #2
16769825 21 Oct 2017 13:56

Unfortunately, there is no need for a rectifier bridge, there are ready bridges
https://www.google.pl/search?q=mostek+prostow...KL1IHXAhVHYJoKHUdZA84Q_AUICigB&biw=6824&bih=6
for this filtration (two capacitors) voltage stabilizer and after the shout.
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#3 16769971 21 Oct 2017 15:36

Wiejuk Wiejuk

Level 7

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Post #3
16769971 21 Oct 2017 15:36

Thanks, but could you send me the diagram and the bridge. I don't know anything like that, so please. And what kind of capacitors
#4 16770046 21 Oct 2017 16:32

wojtek 9007 wojtek 9007

Level 40

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Post #4
16770046 21 Oct 2017 16:32

Hello - you can assemble such a thing;

Added after 1 [minutes]:

Capacitor of your choice;
https://sklep.avt.pl/category/czesci-i-podzespoly-kondensatory/2?filter=1

Added after 44 [seconds]:

Bridge ;
https://sklep.avt.pl/mostek-prostowniczy-4a-1000v-kbl0410.html
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#5 16770060 21 Oct 2017 16:36

marekhab marekhab

Level 33
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Post #5
16770060 21 Oct 2017 16:36

The scheme is very simple.
You select capacitors according to the catalog note of the L78S15 stabilizer
on input C1-0.33uF
behind the stabilizer C4 - 0.1uF
Electrolytic I give about 100uF at the input (at the appropriate voltage)
behind the stabilizer 470uF - 1000uF
In the diagram, I misspelled the stabilizer instead of the L78S15, I described the LM78S15

Attachments:

ZASILACZ.pdf Download (12.14 KB)
#6 16770064 21 Oct 2017 16:37

cyann cyann

Level 20

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Post #6
16770064 21 Oct 2017 16:37

wojtek 9007 wrote:
Capacitor of your choice;

Any from here? My friend probably deigns to joke.

Wiejuk wrote:
needed to convert alternating current from the converter to direct current.

What is this inverter?
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#7 16770069 21 Oct 2017 16:39

marekhab marekhab

Level 33

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Post #7
16770069 21 Oct 2017 16:39

wojtek 9007 wrote:
Hello - you can assemble such a thing;

Without a stabilizer, about 24V will come out, as you can see the founder of the topic needs 15V
#8 16770077 21 Oct 2017 16:43

398216 Usunięty 398216 Usunięty

Level 43

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Post #8
16770077 21 Oct 2017 16:43

Wiejuk wrote:
I would not like to solder rectifier diodes
You can buy a bridge ... but I'm not entirely sure if Schottky diodes will not be necessary in the case of the converter ...
#9 16771177 22 Oct 2017 09:48

Wiejuk Wiejuk

Level 7

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Post #9
16771177 22 Oct 2017 09:48

Thanks marekhab but could you tell me where I can buy all this ??
#10 16771211 22 Oct 2017 10:09

jgorsk jgorsk

Level 12

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Post #10
16771211 22 Oct 2017 10:09

Maybe such a bridge?
https://www.maritex.com.pl/polpwiedzniki/most...rostrzał/mostki_prostownicz_tht/kbpc5010.html

At 2 amps, you'll probably need a small heat sink. Such bridges can be screwed to the heat sinks.
Helpful post

#11 16771227 22 Oct 2017 10:22

marekhab marekhab

Level 33

» | Helpful post? (+1)

Helpful post
Post #11
16771227 22 Oct 2017 10:22

Any electronics store, start with looking for a stabilizer (L78S15), the rest should be standard capacitors, very common.
http://www.sklep.monster.pl/78s15-2a-to-220-stabilizator,4,36627,17445
http://www.sklep.monster.pl/6a-400v-piny-kwadrat-kbpc-604-mostek,4,36121,635
http://www.sklep.monster.pl/470uf-35v-10x17-105-lea-elko,4,45038,14694
these capacitors must be purchased at least 10 pcs
http://www.sklep.monster.pl/100nf-50v-kond-ceramiczny-100szt,4,36872,2509

http://www.sklep.monster.pl/100uf-35v-100szt-6x11-105-lea-elko,4,45038,15385
If you have any questions, write to me and I will try to help.
In another store you can also buy these items, I chose the first one where I buy and they have a large selection.
IMPORTANT L78S15 stabilizer (15Volt 2 Amps), stabilizer on the heat sink.
#12 16771238 22 Oct 2017 10:29

Wiejuk Wiejuk

Level 7

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Post #12
16771238 22 Oct 2017 10:29

I don't understand a bit of the last sentence. Should I mount a heat sink on the stabilizer?
#13 16771245 22 Oct 2017 10:35

jdubowski jdubowski

Tube devices specialist

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Post #13
16771245 22 Oct 2017 10:35

Wiejuk wrote:
I have a problem, namely I have the need to convert alternating current from the converter to direct current.

What frequency?

Wiejuk wrote:
I would not like to solder rectifier diodes, so I am asking for links to ready devices.

If we are dealing with frequencies over 400Hz, it is rather a bridge made of fast diodes.

Wiejuk wrote:
I don't understand a bit of the last sentence. Should I mount a heat sink on the stabilizer?

And what is difficult to understand here - the stabilizer converts excess voltage into heat (simplified), so a heat sink will be necessary.
#14 16773412 23 Oct 2017 09:05

Strumien swiadomosci swia Strumien swiadomosc...

Level 43

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Post #14
16773412 23 Oct 2017 09:05

Wiejuk wrote:
I have a problem, namely I have the need to convert alternating current from the converter to direct current. The converter has an adjustable voltage from 18 to 36V and 2A

Buddy, specify whether the converter has an alternating voltage at the output, which is very strange and unlikely.
Does it have unstabilized constants.
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Topic summary

The discussion revolves around converting adjustable AC voltage (18-36V) from a converter to a stable DC output of 15V or 14V at 2A. Users seek ready-made solutions instead of DIY soldering rectifier diodes. Recommendations include using a bridge rectifier and specific capacitors for voltage stabilization. The L78S15 voltage regulator is suggested for achieving the desired output, with advice on necessary components such as capacitors and heat sinks. Links to purchase components and diagrams are provided, emphasizing the importance of selecting appropriate diodes and ensuring proper heat dissipation for the stabilizer.
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