I had some time to kill and I ended up in a Dollar Tree. (For those not in the US, everything costs exactly a US dollar).
I splurged on a 12V to 5 volt adapter for charging cell phones in a car.
The charger is a switch mode power supply. As you can see from the picture there are not many parts.
The PCB only has 6 electonic parts on it -- 2 electrolytic caps, an inductor, a rectifier diode, an LED and the switcher chip. Also of value is an itty bitty fuse, screw and a spring.
The chip has a logo I don't recognize. It has 3 concentric partial circles with inner circle having an inward pointing arrow. It's marked with 5073 and AD84064Q.
I have included the data sheet. You do read Japanese (Korean?) don't you?
Note the size of the AD84064Q. It is an 8-pin DIP with 1.8mm (about 0.070") lead space.
I splurged on a 12V to 5 volt adapter for charging cell phones in a car.
The charger is a switch mode power supply. As you can see from the picture there are not many parts.
The PCB only has 6 electonic parts on it -- 2 electrolytic caps, an inductor, a rectifier diode, an LED and the switcher chip. Also of value is an itty bitty fuse, screw and a spring.
The chip has a logo I don't recognize. It has 3 concentric partial circles with inner circle having an inward pointing arrow. It's marked with 5073 and AD84064Q.
I have included the data sheet. You do read Japanese (Korean?) don't you?
Note the size of the AD84064Q. It is an 8-pin DIP with 1.8mm (about 0.070") lead space.
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