RFQ/BOM 0 登錄 / 註冊

選擇您的位置

用戶形象

What is the function of C23 and R31 in the complementary output circuit in the figure?

Hardware design
10月 21, 2020 by Johnson 377

The figure shows a complementary output pole circuit, which enhances the current drive capability of the circuit. I also know the working principle.

However, what is the role of C23 and R31 in the figure? A typical complementary output should be without C23 and R31, which should be disconnected here.

所有評論

user image

Love 發表於 October 21, 2020

This resistance and this capacitance should produce a zero, which is related to the frequency characteristics of the circuit.

0
user image

Adriano 發表於 October 21, 2020

It must be related to frequency, how exactly?

I am thinking, is it a way to eliminate crossover distortion. When the level amplitude is less than the turn-on voltage of the transistor, it is turned on through the capacitor and resistance, and the capacitor is used for blocking.

0
user image

Adria 發表於 October 21, 2020

The value of resistance and capacitance in the circuit is related to the load. Normally, this is not necessary. The landlord should give the driving signal and load situation, it will be easier to judge its role.


The drive should be a pulse signal, and the RC component should be used to improve the edge.

0
user image

Kirby 發表於 October 21, 2020

I personally understand that when the drive line is at high frequency interference, it is equivalent to an antenna, which is prone to misconduct. The capacitor is mainly for anti-interference, and the resistance is for absorption. The host can see if there are dozens of Pifa patches.

0

寫一個答案

您需要登錄才能回覆。 登錄 | 註冊