Audio amplifier circuits are essential components in various audio systems, offering high performance and reliability. Let's explore some popular models and their applications.
AN7115 Audio Power Amplifier Circuit
The AN7115 is designed for small portable devices like tape recorders and audio equipment. It has a maximum supply voltage of 13V. Without a heat sink, it can dissipate up to 1.2W, and with one, it can handle 2.25W. The operating temperature ranges from -20°C to 70°C. This makes it ideal for compact audio amplification needs.
AN7114 Audio Power Amplifier Circuit
Similar to the AN7115, the AN7114 operates at a slightly lower voltage of 11V. Its power dissipation without a heat sink is also 1.2W, and with a heat sink, it can go up to 2.25W. It works within the same temperature range, making it suitable for similar applications in portable audio devices.
BA313 with ALC Recording and Playback Circuit
The BA313 is known for its automatic level control (ALC), wide operating voltage range (3-12V), high gain, low distortion, and minimal noise. It's often used in recording and playback systems where consistent sound quality is crucial.
BA328 Stereo Preamplifier
This preamplifier features a maximum supply voltage of 18V and a maximum power consumption of 540mW. It operates between -25°C and 70°C, making it ideal for stereo systems that require stable performance under varying conditions.
BA532 Audio Power Amplifier Circuit
With a power supply voltage of 13.8V and an 8Ω load, the BA532 delivers 5.8W at 10% THD. It has a ripple rejection ratio of 40dB and is compatible with BA511A and BA521. Commonly used in car stereos and other audio systems, this chip offers excellent performance and reliability.
BA536 4.5W Dual Channel Power Amplifier Circuit
The BA536 provides 4.5W per channel at 4Ω and 5.5W at 3Ω, both at 12V. With a ripple rejection ratio of 55dB and a distortion level of 1.5%, it's ideal for BTL configurations and offers great flexibility for audio system design.
Limit parameters: Vcc=18V, working temperature: -20-75°C.
HA1377 Power Amplifier Integrated Circuit
Produced by Hitachi, Japan, the HA1377 contains two sets of power amplifier circuits on a single silicon chip. At 13.2V, it delivers 5.8W at 4Ω and 17W in BTL mode. It features internal surge and thermal protection, making it suitable for portable and desktop audio devices.
[1] Low harmonic distortion (≤1% between 100Hz-10kHz).
[2] Internal surge protection.
[3] Thermal cut-off protection.
[4] Minimal external components required.
Figure 2 shows the dual-channel application circuit, while Figure 3 illustrates the BTL configuration. Table 1 and Table 2 detail the electrical and limit parameters of the HA1377.
TDA2030 Audio Power Amplifier Circuit
Manufactured by Telefunken, the TDA2030 is a V-type 5-pin plastic package used in car stereos and medium-power audio equipment. It offers large output power, low distortion, and internal protection circuits. It is widely available from companies like SGS, RCA, Hitachi, and NEC.
[1] Few external components required.
[2] High output power (18W at 4Ω).
[3] Compact TO-220 package.
[4] Minimal boot impact.
[5] Built-in protection circuits (short-circuit, thermal, reverse polarity, etc.).
TDA7375 Surround Sound Power Amplifier Circuit
Designed for automotive audio systems, the TDA7375 delivers up to 40W per channel at 4Ω and includes features such as no external damping capacitors, internal fixed gain, soft start, overload protection, and battery polarity switching. It’s ideal for surround sound applications in cars and multimedia systems.
Industrial plugs, sockets and couplers are mainly divided into four categories: plugs, sockets, connectors and appliance input sockets, which are generally collectively referred to as industrial plugs. Its main features are as follows:
1. Safe and reliable
â‘ This kind of product uses the color of the shell to indicate the rated voltage, such as: 40V-45V is purple, 110V-130V is yellow, 200V-250V is blue, 230V-415V is red, and 500V is black. It is easy to distinguish, and you can't get it wrong.
â‘¡Different specifications have different diameters, pole numbers, and grounding contact positions. Only the same specifications can be plugged in to prevent misplugging.
â‘¢There is protection against electric shock. The grounding pole insert sleeve in the socket is longer than the phase pole and neutral pole insert sleeve, so as to ensure that the grounding pole is connected before the phase pole is connected when the plug is inserted, and the grounding pole is finally separated when the plug is pulled out. It is very safe to use.
â‘£Holding devices are provided to clamp the plugs and sockets to prevent them from falling off after being inserted, which improves the reliability.
⑤High protection level. There are IP44 splash-proof type, IP67 anti-immersion type and so on. Not only the human body cannot touch the live parts, but it can also be used under different environmental conditions to ensure safety.
â‘¥An elastic band is added to the insert sleeve. Ensure close contact, good conductivity and long service life after the plug is inserted.
⑦There is a cable clamping device, which can clamp the cable sheath, so that it will not be pulled off, and it is safe to use.
2. Durable
â‘ Good mechanical properties. The product shell is made of high-quality engineering plastic, which has high strength, impact resistance and is not afraid of falling. The rubber and plastic used have anti-aging properties and can be used not only indoors but also outdoors, and are durable.
②Heat resistance and flame resistance. The shell and internal insulating parts have heat resistance, the temperature can reach (100±5)℃, and the important parts can withstand (125±5)℃; and it is flame retardant.
â‘¢More resistant to plug and use. For example, for a product with a rated current of 16A, the number of normal plug-in operation cycles is more than 5000 times.
â‘£The temperature rise test of conductive contact parts shall not exceed 50K, which is suitable for long-term use.
3. Strong versatility
The products adopt the standards of GB/T 11918~11919-2001, which are equivalent to IEC 60309-1 and 2 standards, and are fully in line with international standards. Therefore, such products can be used both domestically and internationally. At the same time, it has a wide variety of specifications, which can meet various occasions and uses.
These characteristics of industrial plugs and sockets give it high safety, reliability and international versatility. Therefore, it has gradually received attention in the country. Through continuous promotion and application, industrial plugs and sockets have gradually entered various industries, such as electricity, ports, machinery industries and large-scale buildings. With the development of science and technology, industrial plugs and sockets are constantly innovating. Various quick installation technologies have been gradually applied to plugs and sockets, making it more convenient to use.
IP44 Plug,IP67 Plug,IP67 Socket,IP44 Socket
Ningbo Bond Industrial Electric Co., Ltd. , https://www.bondelectro.com