Negative ion generator power supply modification cost less than 2 yuan

dcexpert · Published on 2021-12-17 15:44

Negative ion generator power supply modification cost less than 2 yuan [Copy link]

This post was last edited by dcexpert on 2021-12-17 15:44

This negative ion generator requires three CR123A batteries, which is inconvenient and costly (one CR123A battery costs 4-9 yuan).

Therefore, a boost circuit is used to boost the USB's 5V to 12V to drive the negative ion generator to work. In this way, a power bank can be used as a power source, or the computer's USB can be used for power supply.

The components used are as follows, excluding postage, the cost is about 1.25 yuan:

Boost module, 1 yuan

I bought a USB holder before, which cost 0.25 yuan each. There are many similar USB holders, and the prices are similar.

Connect the 5V of the USB board to the input of the boost module, and solder the output of the boost module to the battery holder.

Dig a USB hole on the side

The effect of powering on

soso · Published on 2021-12-17 16:42

The price is attractive haha

qwqwqw2088 · Published on 2021-12-17 17:06

The cost of such a board is really low.

tagetage · Published on 2021-12-17 17:07

Adding a USB socket is a good idea.

baopodao · Published on 2021-12-18 11:16

Very good idea, can save battery.

annysky2012 · Published on 2021-12-20 17:10

High-quality products at low prices, this is the price/performance ratio

freebsder · Published on 2021-12-20 17:38

I thought the negative ion generator was 2 yuan.

dcexpert · Published on 2021-12-20 17:48

freebsder posted on 2021-12-20 17:38 I thought the negative ion generator was 2 yuan.

Actually, it's pretty much the same

Negative ion generator power supply modification cost less than 2 yuan [Copy link]

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