Home › Forums › Voltage Regulator Support › How to adjust Voltage ? Mini-DC-Boost-Converter 2.5-6V to 4-12V DC-DC Step Up
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KaiApril 18, 2016 at 11:32 pmPost count: 0
Hi from Germany, which resistor has to be changed for adjusting the output voltage? I couldn’t find any information about that.
Item:
http://www.amazon.de/gp/product/B00HSGCHEQ/ref=as_li_tl?tag=proeng0d6-21&keywords=boost+converterGreetings
KaiKaiApril 19, 2016 at 11:37 amPost count: 0Hi again,
do you have a technical description, data-sheet or any detailed instructions? What exactly does each of the two resistors? Which resistor must have a higher or lower value (and what range: Rmin / Rmax ) to increase or decrease the output voltage? can I use a potentiometer and how has it to be connected? I don’t ant to destroy the converter by using the “try-and-error” method.
Without these informations the dc-dc-converter may be a nice piece of technique, but whole potential can never be exhausted by the user. The typical buyer isn’t willing to inspect the circuit and do a reverse engineering to find out how he can take the full use of the converter. The same applies to me.
If you would provide a PDF-file with all these informations (including a circuit diagram) for download you could sell much more of the dc-dc-converter (and all other devices) and you would have avoided the negative comment on Amazon.de. No, it wasn’t me 😉
Greetings from Germany
Kai Schulten
Hello Kai,
Thank you for your quick reply and valuable suggestion.
The function of the two resistors is adjusting the output voltage.
If you need to adjust the voltage, you need to adjust the fixed resistor.
The ratio of the two resistors is the value of the output voltage which is mentioned in the image we sent to you before.
You can also use a adjustable potentiometer to adjust the voltage.
Please remove the original resistor and weld the pins of a adjustable resistor to the pins of the original resistors.
Please note that the value of the adjustable resistor should be higher than the two original resistors(R1:88K, R2:12K).
Hope this can help you.
Best regardsChrisSeptember 12, 2016 at 5:40 pmPost count: 0What size SMD is the resistor?
0402
0603
0805
1206I need to know which physical size to purchase.
Examples
https://www.amazon.com/dp/B00IMVFDP6/ref=biss_dp_t_asn
https://www.amazon.com/dp/B013B5587K/ref=biss_dp_t_asnKevinSeptember 23, 2016 at 12:58 pmPost count: 0Hello Kevin,
Thank you for writing in.
Here the PDF file is the datasheet of the product, please check it.
DATASHEET_090028
Hope this can help you.
Best regards -
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