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The electronic of my old speaker was fried and it's lipo battery tired.
With this Pam8403 i transformed the speaker in wired amplified speaker to a little TV.
I add 4700uF capacitor for the five volts power supply.
This amplifier needs a good 2Amps or more power supply.
There is a power swith un the pot.
Good sounding microscopic audio amplifier.
The electronic of my old speaker was fried and it's lipo battery tired.
With this Pam8403 i transformed the speaker in wired amplified speaker to a little TV.
I add 4700uF capacitor for the five volts power supply.
This amplifier needs a good 2Amps or more power supply.
There is a power swith un the pot.
Good sounding microscopic audio amplifier.
The electronic of my old speaker was fried and it's lipo battery tired.
With this Pam8403 i transformed the speaker in wired amplified speaker to a little TV.
I add 4700uF capacitor for the five volts power supply.
This amplifier needs a good 2Amps or more power supply.
There is a power swith un the pot.
Good sounding microscopic audio amplifier.
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A part of the QA has been auto-translated.
0
Q:
After having tested this board, I find a strange ticking noice from the amplifier. When I doesnt attach this amplifier, or use another amplifier, there are no ticking noices. Do I have a faulty board, or is it normal to have ticking noice from this board? I used 3.3V as power, and an 8 ohm 0.3W speaker. It should not generate ticking noices.
After having tested this board, I find a strange ticking noice from the amplifier. When I doesnt attach this amplifier, or use another amplifier, there are no ticking noices. Do I have a faulty board, or is it normal to have ticking noice from this board? I used 3.3V as power, and an 8 ohm 0.3W speaker. It should not generate ticking noices.
I have bought 3 of these items. I want to plug them -together- to one 5V 2A adaptor as power source.
Is it suitable?
What will be the total Amper of these 3 item? Thanks in advance
I have bought 3 of these items. I want to plug them -together- to one 5V 2A adaptor as power source.
Is it suitable?
What will be the total Amper of these 3 item? Thanks in advance
I was thinking about using this as a headphone amp, but it would have to have a common ground on outputs. It doesn't look like that is the case. Is that correct?
I was thinking about using this as a headphone amp, but it would have to have a common ground on outputs. It doesn't look like that is the case. Is that correct?
This is a 3W*2 power amplifier board for low power
This is a 3W*2 power amplifier board for low power
Answered by wujiahui on 09/11/2018Helpful (0)
0
Q:
What sources have you used that produce less than line level (eg mic / phono / guitar pickup ) to drive headphones to a useful level (without a pre-amp)?
What sources have you used that produce less than line level (eg mic / phono / guitar pickup ) to drive headphones to a useful level (without a pre-amp)?