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Topic: Drive 9v 7-segment using 5v Power Supply? (Read 1 time) previous topic - next topic


I have a 5v power supply. But I need to power a 2,6" 7 segment that need 9v for operating voltage.
So my question is there a possible way I use some driver that can automatically step up my power supply voltage to 9v?
Or I have to use step up circuit instead?


This might do the job: https://www.pololu.com/product/2116

I cannot say that it is up to the task nor do I know if your 5 volt supply is sufficient as well since you never said what current is required by the display and what current your 5 volt power supply can provide. Until you provide those values, all I can say is maybe... it will work.


You need to come up with 9V somehow.
Simple way is a boost converter, and TPIC6B595 or TPIC6C595 high voltage/high current shift register to sink current from the cathodes.

How much current is needed?
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.


You haven't played by the rules, so how or why do you expect answers?

Provide the link to the description of the display.

Provide the link to the description of the power supply.

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