Circuit principle:
The circuit is shown in Figure 9-68. TDA1524A is mainly suitable for DC volume tone balance control in HI-FI audio system. It avoids the noise generated by the potentiometer for volume tone adjustment directly, and here only one potentiometer can be used to complete the two-channel volume tone and balance control. In addition, TDA1524A also has the ability to handle the overload of the input signal to avoid overload distortion. For low-level input signals, the volume control button of TDA1524A can also provide a maximum gain of 21.5DB.
LM1877 is an op amp type two-channel audio power amplifier, which is especially suitable for use with TDA1524A circuit. LM1877 has a perfect output current limiting and overheating switching protection circuit, and it does not eliminate the "porch" sound and voltage regulation bias Point bias and other auxiliary circuits, so LM1877 only needs a few external components to organize high-quality HI-FI audio power amplifier.
The input signal of the dual-core socket XS in Figure 9-68 is taken from the output port of the multimedia sound card line. The signal is coupled to pins 8 and 10 of IC1 via C4 and C11, and the output signal is coupled to the input terminal of IC2. R8 and R9 are the feedback resistors of the two channels,
Component selection and installation:
Production and debugging:
Quick Turn PCB fabrication and assembly service - Fast Turnaround PCB Prototype
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Quickturn Printed Circuit Board Fabrication:
We offer Quick turn PCB due date as follows:
- 2 layer quick turn PCB --1 day
- 4-6 layer quick turn PCB --2 days
- 8-10 layer quick turn PCB --3 days
- 12-16 layer quick turn PCB --4 days
- 16-20 layer quick turn PCB -- 5 days
- 22-30 layer quick turn PCB --6 days
Materials that we keep in stock are:
- FR4 (Tg – 135C, 145C, 170C)
- Rogers Ultralam 2000
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If you don`t see the material above, please contact us because we most likely have it in stock, but not listed above, or can special order it for you.
Finishes we are able to provide our customers:
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Quick Turn Prototype PCB
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You may choose other time schedules to fit your budget, if your work timeframe is not that tight. We offer 48-hours and 72-hours shipping too.
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"Time is money" and "Time is life". Rapid introduction of new products to the market means seizing market opportunities earlier than competitors.
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Quick Turn PCB Assembly
Based on fast PCB manufacturing and fast steering component procurement support, we can ensure PCB assembly production.Our PCB assembly delivery time is the shortest in the industry. For prototype PCB, our delivery time is 24/48 hours or 5/10 days. For small batch production orders, you can choose delivery time of 10, 15 or 20 days. For medium-volume orders, we offer 15, 20 or 25 days.
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There are many PCB manufacturers in China, especially in Shenzhen.
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