A good amplifier circuit aims for a high, distortion-free voltage gain (Au) and a high input resistance (Ri), while the output resistance (Ro) should be as low as possible, and the bandwidth should be as wide as possible. The circuits introduced earlier are all BJT common emitter amplifier circuits, which can achieve a relatively high … Read more
The BJT amplifier circuit requires distortion-free amplification of small signals, with a larger voltage gain Au being preferable, a wider bandwidth being better, and a larger AC input resistance Ri being desirable, while a smaller AC output resistance is also preferable. In the Multisim workspace, place 1 DC power supply V1 (12V), 1 AC small … Read more
Last year, I assembled an amplifier board using two LM1875 chips for ceiling speakers in my shop, which has been in use ever since. Recently, I found a BBE sound exciter board online, which is said to enhance high-frequency details and improve low-frequency performance. However, since this BBE exciter board has its own bass and … Read more
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Follow+Star Public Account Number, don’t miss out on exciting contentSource | Internet When designing electronic circuits, practical experience is crucial, but it is built upon theoretical knowledge. Therefore, we still need to master some common electronic knowledge. The following organizes some common circuits, displayed in dynamic graphics. 1. Single-Phase Bridge Rectifier Circuit 2. Single-Phase Half-Wave … Read more
Content Creator: TechQuickie Do you really need to pair your headphones with an amplifier and DAC (Digital-to-Analog Converter)? How do you choose one? After hours, or even days of painful research, you finally decide to buy a good pair of headphones to replace the cheap earbuds that came with your device. Congratulations! But unfortunately, this … Read more
The amplifier circuit can increase the output power of a signal. It obtains energy from the power supply to control the output signal waveform to be consistent with the input signal but with a larger amplitude. In this sense, the amplifier circuit can also be viewed as a controllable output power source used to achieve … Read more