This unit seems to be very retro. Like it was such a successful product that they didn't feel they needed to change the design. It's very stylish, but has so many bits that it must be expensive to make in terms of plastic mouldings and the assembly time. I'm surprised they haven't streamlined the design down to just a few parts.
The Japanese have always embraced the concept of replenishing the active molecules in air. That might sound a bit quack-ish, but in reality there are certain essential elements of air that have a short half-life in enclosed areas, and need to be created on demand. They are the ones that actively oxidise impurities and deactivate mold spores, bacteria and viruses.
I bought one of these units a very long time ago, and I mean decades ago. I treated it as a novelty until I needed the batteries for something else. Now I understand more about how it works and what it does, I appreciate the design more. Especially in the case of this unit where they have made an effort to keep quiescent (ambient standby) current very low to allow a long battery life.
I didn't really describe the strange battery monitoring circuit enough, so here's some more detail.
When the ozone module is powered the battery monitor is also powered. The 10K resistor acts as a pull-down resistor to the microcontroller's input pin that gets pulled high by the transistor when it's turned on. The transistor starts turning on when its base is around 0.6V below the positive supply rail, and that is scaled down by the bridge of 4K7 (4700 ohm) and 22K (22,000 ohm) resistors which roughly scale the input to 1/5th. That means the transistor will be turned on until the battery voltage drops below around 3V. So the microcontroller can detect the low battery voltage and flash the red warning LED.
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-
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The Japanese have always embraced the concept of replenishing the active molecules in air. That might sound a bit quack-ish, but in reality there are certain essential elements of air that have a short half-life in enclosed areas, and need to be created on demand. They are the ones that actively oxidise impurities and deactivate mold spores, bacteria and viruses.
I bought one of these units a very long time ago, and I mean decades ago. I treated it as a novelty until I needed the batteries for something else. Now I understand more about how it works and what it does, I appreciate the design more. Especially in the case of this unit where they have made an effort to keep quiescent (ambient standby) current very low to allow a long battery life.
I didn't really describe the strange battery monitoring circuit enough, so here's some more detail.
When the ozone module is powered the battery monitor is also powered. The 10K resistor acts as a pull-down resistor to the microcontroller's input pin that gets pulled high by the transistor when it's turned on. The transistor starts turning on when its base is around 0.6V below the positive supply rail, and that is scaled down by the bridge of 4K7 (4700 ohm) and 22K (22,000 ohm) resistors which roughly scale the input to 1/5th. That means the transistor will be turned on until the battery voltage drops below around 3V. So the microcontroller can detect the low battery voltage and flash the red warning LED.
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-
https://www.patreon.com/bigclive (extra streams and channel interaction)
Or alternatively:-
http://www.bigclive.com/coffee.htm
This also keeps the channel independent of YouTube's advertising algorithms allowing it to be a bit more dangerous and naughty.
#ElectronicsCreators
空気浄化
The 2 i ordered after watching this just arrived today. Nearly the same but mine have a wedge in the back . Air can get in and is pushed out at the top together with the ozon smell. I was curious about the smell of ozon and for me its a chemical-chlory odor. A company here in germany sells lots of ozon emiters under the NewGen brand. This things are so cute, they look like retro robots for me.
I have one of those, about 10 years ago and it works fine for me
Given the way that works it might be ideal for a conversion to lithium.
As a French speaker a thumbnail that reads "So Many Bits" really gets my attention. Interesting.
This has more screws than the bottom of an old laptop
I do wonder if you could fit a slow turning fan in there pushing ionised air out. I got one of these ionisers and I do like it. It's producing ton of ions. Should get a second one.
Just got mine and I gave it a diode for voltage drop on 5V USB from a little USB power bank, great unit!
In order to increase your income can you not put buyers in contact with sellers of products you judge worth buying and get a Commission on the sale? You need not take responsibility for said products, just your rekommendation, you say you think it is good(if it is) ,how and why it is a good buy and under what conditions it is good. Your opinion helped me choose a good uvc light and not get ripped of, thank you.
Put my hand near the speaker but felt no breeze!
Fridge ioniser works nicely, hence better on normal batteries.