hello everyone..

can anybody here help me design a boost converter circuit for:

1V DC to be converted to 6V DC
and 3V Dc to be converted to 14V DC.

a circuit diagram would be really appreciated.
thanks in advance everyone..

 

Starting with only 1V to deal with is difficult, the 3V circuit is simple as there are tons of charge pump ICs commercially available to do this with a minimum parts count.

The 1V circuit is going to require a switching MOSFET that has a very low Rdss_on and will operate with that low of a voltage potential across it.

How much current are we dealing with here?

 

1V to 6V
the 6V DC will be used to operate a DC motor..

3V to 14V
the 14V is used to operate a computer cooling fan (.15mA)

 

A fan will pull about 150mA not .15mA (which is 150µA.) If you consume 150mA at 14V, you must input *at least* 700mA, that's excluding inefficiencies, if you had a 80% efficient conversion then you'd have to provide ~875mA. Can your power supply (for example a battery) do this?