Just looking for a battery protection circuit to power something i'm currently working on and came across this all in 1 unit from the looks of it. I have no experience with 5v setups or PAM's as i have only used class D and T boardss to date.
5w+5w dual channel bluetooth audio stereo amplifier module pam8403 wireless bluetooth receiver support tf card dc 5v Sale - Banggood.com
Is this too good to be true?
5w+5w dual channel bluetooth audio stereo amplifier module pam8403 wireless bluetooth receiver support tf card dc 5v Sale - Banggood.com
Is this too good to be true?
Hi
first of all the PAM8403 is a Class D chip, so maybe the admin should move this post.
the data sheet shows it is with 5Volt power supply just 2x3W with 10% THD possible. so 10% is not so nice to listening -it should be under 1% THD. but look at page 4 you can see the values. so with about the battery 18650 you get 3,2V!..
therefore you get 0,45Watt in 8R or 0,85W in 4R and that fine for that supply. its a filter less chip so do not need extra caps or coils before the speaker terminal.
so forget this "chinese" 5Watt. for 6 bucks its a fine to try out.
😉chris
first of all the PAM8403 is a Class D chip, so maybe the admin should move this post.
the data sheet shows it is with 5Volt power supply just 2x3W with 10% THD possible. so 10% is not so nice to listening -it should be under 1% THD. but look at page 4 you can see the values. so with about the battery 18650 you get 3,2V!..
therefore you get 0,45Watt in 8R or 0,85W in 4R and that fine for that supply. its a filter less chip so do not need extra caps or coils before the speaker terminal.
so forget this "chinese" 5Watt. for 6 bucks its a fine to try out.
😉chris