Boost Converter

376

17:32:43

This circuit converts 1.2V to 5V and supplies a 250mA load

published 7 years ago

LeButch

7 years ago

Its called a boost converter, not a booster converter.

BillyT

7 years ago

The circuit presented would require a bit of help to supply the stated output; http://everycircuit.com/circuit/5199815469432832

hurz

7 years ago

But with this low frequency you guys pump 166A every cycle into the coil. Increase the frequency in 100kHz of above you come down into the 1 ampere range. That needs a smaller cap 5uF and the zener is just an energy waster. Better change pulse width ratio to hit 5V

sorh

7 years ago

Thanks for the comments guys! But without the zener how would I be able to control the output voltage?

hurz

7 years ago

With the pulse pause ration from the logic tran! This needs an PWM regulator voltage controlled

schmobi2001

6 years ago

I have built something similar with a logic train operating at 100 khz. Without load it boosts from 5 volt to 20 volt. But when I attach a small 2 mA load it drops to 5 volt again. How can I stabilize the output voltage? Thanks.

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