[SOLVED] Simple 110vAC to 110vDC Converter

[Ajith kumar]

I need convert the 110vAc to 110vDc. Please gave me the simple circuit diagram.

 

[Genovator]

The most simple circuit diagram is to use a bridge rectifier to convert AC to DC...
https://upload.wikimedia.org/wikipe...ge_alt_2.svg/557px-Diode_bridge_alt_2.svg.png

 

[Ajith kumar]

The most simple circuit diagram is to use a bridge rectifier to convert AC to DC...
https://upload.wikimedia.org/wikipe...ge_alt_2.svg/557px-Diode_bridge_alt_2.svg.png

Thanks for your support.

Could you please tell me which range of PN diode used for this circuit.

And i need regulated supply. So kindly tell me which range of capacitor used for 110v ac to 110v dc converter.

 

[jiripolivka]

For 110 VAC you can use e.g. 1N4006 diode or similar with >400 V backward voltage rating.
Capacitor value as well as the regulator depend on load current which you did not indicate.

 

[Genovator]

As jiripolivka said, both the diode and capacitor will depend on your current. If your current draw is upto 1 amp in 110v DC, any 1n4004 or higher diode can be used. If your current draw is higher than 1 amp, you need to choose a higher current rating diode, such as 10A10.

A filter capacitor is needed to minimize the ripple voltage. It should be a electrolytic one. Use this formula to find a suitable capacitor.

dU= I/2fC

where dU is peak to peak ripple,
I is load current,
f is operating frequency and
C is capacitor volume in Farad
.
In this way you can choose ripple amplitude and from equation estimate
capacitor volume. For example if you have 1A current and capacitor
4700uF ripple will be

dU= 1/(2*50*0.0047)= 2.12V.

As you can see, capacitor value depends upon the current flow, not the operating voltage. But while choosing a cap, use a voltage rating of more than 250v.

 

[KerimF]

Using a full diode bridge and a filter capacitor, the DC voltage, at no load, will be approximately:

Vdc = Vrms * SQRT(2) = 110 * 1.414 = 155.5 V

It is actually a bit less ( 2 diode forward voltage and the dc drop of the capacitor ripple).

To get a regulated 110V DC voltage, the design depends on the load current (its maximum and minimum in the least).

 

[kam1787]

while choosing a cap, use a voltage rating of more than 250v.

>250V seems a bit excessive. >> 155V would do. To a degree the higher the better, but cost is a constraint as well as practically.

 

[Genovator]

>250V seems a bit excessive. >> 155V would do. To a degree the higher the better, but cost is a constraint as well as practically.

I agree that. All needed is to follow a derating factor of minimum 20-30%...