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Does the battery boost circuit add load and the output drops to 2V. Is there a problem with the circuit?

Hardware design
July 20, 2020 by Riley 1630

Transformer 1:50, input 1.2V nickel-chromium battery, output 5V, add load, the output will be reduced to 2V, the load capacity of the circuit is so bad?

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Connor Posted on July 20, 2020

This circuit may be able to debug enough efficiency, but there is no way for mass production.

If it is a mass product, it is recommended to give up this idea to save the cost to make this circuit. Use a suitable boost DCDC chip to realize this power supply honestly.

If you are just for fun, you can try: adjust the transformation ratio, adjust R6, change 4148 to 5819, replace other types of RCC circuits, replace 8050 with MOSFET, and reduce the impractical.

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Taylor Posted on July 20, 2020

It is best to use a suitable boost DCDC chip to achieve this power supply. Check on TI. There is always one suitable for you, with only 5 or 6 external components, simple and reliable.

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Ashley Posted on July 20, 2020

The tube power is too small, and the battery has a poor load capacity.

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