Design of low cost power supply 230V 50Hz AC to 12V 100mA DC

We have everything ready in our project except power supply circuitry. Currently we use step down transformer (along with bridge rectifier and capacitor) for conversion from 230V 50Hz AC to 12V 100mA DC. But it is costly and bulky. So we want to replace it with less costly and light-weight circuit. 12V DC output would be used by IC 4060, IC 4002, relay and LED. So protections like over-current protection, over-power protection etc. should be taken into account only if necessary since cost of components is a major concern. Output may also contain some amount of ripple provided IC and relay works fine. Cost of manufacturing should be as low as possible.

We want:

1. Circuit diagram of power supply circuitry suitable for our application.

2. Bill of material so that we can order components ourselves and assemble according to circuit diagram.

We don’t want:

1. PCB layout or gerber file. We will make that at our end.


This type of power supply circuitry (along with enclosure and cable) is sold in Indian market in retail in [url removed, login to view] (USD 0.6). A picture of such product is attached. But we cannot reverse-engineer this product and take it because its output is 5V and transformer details is not written on it. I think it is a switching power supply.

Beceriler: Elektronik

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İşveren Hakkında:
( 1 değerlendirme ) Amravati, India

Proje NO: #693356



your cost of Rs 50/ per unit is possible if you buy in quantity,My design is lowest cost of line SMPS but to get down to that cost you have to go into quantity production, else there is a way out, which is non isolated Daha fazlası

4 gün içinde 200$ USD
(3 Değerlendirme)

[url removed, login to view] your PMB - Arun

1 gün içinde 100$ USD
(1 Değerlendirme)

16 freelancers are bidding on average $99 for this job


Hi, We are a design house based in Bangalore. PLease see the PMB. Regards, Geo

in 10 gün içinde200$ USD
(5 Değerlendirme)

Hi, This is Parag Karia. Please see the PM for more details. Thanks, Parag

1 gün içinde 30$ USD
(1 Değerlendirme)

I will design electronic circuit and deliver to you the schematic.

in 45 gün içinde30$ USD
(1 Değerlendirme)

See details in MB.

in 10 gün içinde200$ USD
(2 Değerlendirme)

please see your pmb...:)

in 5 gün içinde45$ USD
(0 Değerlendirme)

Please check Your pm, thanks.

in 2 gün içinde80$ USD
(0 Değerlendirme)

I have Power supply design experience, I am ready to take up immediately.

in 5 gün içinde50$ USD
(0 Değerlendirme)

We are Good in Micro controllers,Firmware Development, and Embedded Systems!

in 7 gün içinde100$ USD
(0 Değerlendirme)

I designed switching power supply based on Top/Lnk /Tiny/Viper IC. Let's see what you [url removed, login to view]

1 gün içinde 50$ USD
(0 Değerlendirme)

[url removed, login to view]

in 3 gün içinde150$ USD
(0 Değerlendirme)

size limit of circuit layout?what type SMT or THT?

in 15 gün içinde111$ USD
(0 Değerlendirme)

The design will be a simple and reliable flyback power supply incorporating *2 main components: [url removed, login to view] PWM H.F (100khz) switcher from Power Integr. [url removed, login to view] transformer with safety [url removed, login to view] Main features: simpl Daha fazlası

1 gün içinde 200$ USD
(0 Değerlendirme)

simple, don't want to re eng aaaaaaaaaaaaaaaa re________d your transformer

in 5 gün içinde30$ USD
(0 Değerlendirme)

please send me whether u require a switching mode power supply or any other type power supply, I quoted for switching type power supply, if u want me to design a power supply other than the switching type, i can do tha Daha fazlası

in 15 gün içinde60$ USD
(0 Değerlendirme)

I'v completed various project on electronics in my engineering university Lab.

in 3 gün içinde100$ USD
(0 Değerlendirme)