A very simple yet useful 6 watt audio amplifier circuit using IC TDA1011 is explained in the following article, which can be built by new hobbyist and used for amplifying music from different sources such as cellphones, FM radios, doorbell etc.
作者：dhrubajyoti biswas。
单片集成的音频放大器电路TDA1011专门用于录制系统或便携式无线电。TDA1011有能力在4W负载的阻抗下交付高达4W。
The device can also reach 6W on 4W where the supply would be 16V in those applications which are mains-fed.
TDA1011的最大允许供应为24V。因此，该设备非常适合AC和DC系统。
Also the low voltage supplies of 3V and 6V enables applications that run on 6V.
TDA1011具有各种功能。
他们是：
a) SIL based which enables easy-mounting of the device;
b）电源和前置放大器分开；
c) output power is high;
d）具有热保护；
e) input impedance is high;
f）当前排水量很低；
g) generates less noise to radio frequencies.
技术规格
Other electrical specifications for the proposed 6 watt amplifier circuit using TDA1011 are as follows:
- Peak output current is as high as 3 amps
- 总谐波失真为1.5瓦
- Frequency Response is within 60Hz and 15kHz
Heat Sink Design
Just like any other amplifier IC, the TDA1011 too will require a heatsink in order to perform optimally at full load conditions, that is high volumes.
让我们假设电源电压为12V，然后根据标准计算，39 k/w的Hetasink将足以保持IC COL并忠实地运行，无论负载条件如何。
i have tda 2050 stereo made by me—working fine no noise——i buyed–readymade–tone control board bass,mid,treeb,vol–2 ic —–4558d—-pho
power supply separate is for tone board—
9-0-9 v ac after bridge rectify—-12-0-12 v dc power given to tone board—-in board written d c—-( + – gr)
观察 -
1 - - - - 当我连接音调板时 - 声音还可以，但是当暂停歌曲巨大的背景噪音时，巨大的背景噪音也会降低，如果拒绝了
2 - - 音调板上的奇怪事物 - 如果我转向逆锁方向，其他所有锅都会增加逆时机方向
3——–when i turn off power to tone board with amp on no noise
4—–in board power ground, input,output,vol pot same ground
5—–in input of tone board 150 k ohm there—output 10k
6 ——————试图为放大器，信号，音调 - 在那里尝试星星
——–what should i try to resolve issue ?
- - 谢谢你
您是如何将音调板与放大器连接的？…。确保音调板直接与放大器相连，或者是否是通过电缆连接的放大器的地面。
要纠正音调的音量方向，只需互换其音量锅的外线……。
in input of tone board i have given pc out right/left and ground—-in output of board connect to amp input right /left tda board and ground together
也Vol Pot – 47K，低音trble -100k
这种类型的照片 -
————without regulator———-i have unregulated supply
我的放大器不包含Vol旋钮 - - - PC OUT设置为全卷 - - 我按音调板调整Vol Vol
它在不受监管的供应方面有效吗
when signal cable open——–noise stiill there
1）音量控制应来自放大器侧，并从放大器侧进行控制，而不是来自音调控制器侧……否则噪声问题将始终存在
2）使用从音调控制器到放大器的优质屏蔽线，并确保屏蔽线的屏蔽层与AMP接地正确接地。
3) unregulated power supply will work but it must a pure DC and within the specified limits of the circuit.
picture———–https://ibb.co/bHm1pw
————–does this pic makes clear to you connections———–amp is grounded to amp transformer ————
信号接地到音调板变压器 - - - 尝试接地也是AMP变压器 - 不结果 - 在图片中 - - - - - + - g由12-0-12 V dc提供，使用Transformer-Bridge-Caps不受管制的供应提供了12-0-12 V DC————
输入 - 来自PC OUT的输入 - 输入接地至电源 - 输出与AMP输入连接
我希望您理解我的意思是屏蔽线……在图像中，我可以清楚地看到您没有使用屏蔽线来进行音乐输入。如果想减少噪音拾取的话，最好做到这一点...
+供应可以到达任何地方，但地面线必须在DC阶段共同连接。
should i connect grounds off both amp, preamp transformer ?
——实际上amp trannsformer 22-0–22=44 v so i cannot use in preamp
所有理由都应共同连接，这对于任何DC电路工作都是强制性的……。