Datasheet > LM555CMX_12

LM555CMX_12

更新时间： 2022-03-18 06:57:56

阅读下载

获取价格

如果您发现信息不准确，欢迎纠错

LM555CMX_12 数据手册

LM555

When the trigger starts in a timer configured as shown in Figure 13, the current flowing through capacitor C1 becomes a

constant current generated by PNP transistor and resistors.

Hence, the V is a linear ramp function as shown in Figure 14. The gradient S of the linear ramp function is defined as

follows:

p – p

----------------

S =

14

Here the Vp-p is the peak-to-peak voltage.

If the electric charge amount accumulated in the capacitor is divided by the capacitance, the V comes out as follows:

V=Q/C

(15)

The above equation divided on both sides by T gives us

Q  T

---

-----------

16

and may be simplified into the following equation.

S=I/C (17)

In other words, the gradient of the linear ramp function appearing across the capacitor can be obtained by using the constant

current flowing through the capacitor.

If the constant current flow through the capacitor is 0.215mA and the capacitance is 0.02F, the gradient of the ramp function

at both ends of the capacitor is S = 0.215m/0.022 = 9.77V/ms.

1...7 8 91011 12 13

下载PDF

型号	品牌	描述	获取价格	数据表
LM555CN	HARRIS	Timers for Timing Delays and Oscillator Application in Commercial, Industrial and Military	获取价格
LM555CN	ONSEMI	单计时器	获取价格
LM555CN	TI	Timing from Microseconds through Hours	获取价格
LM555CN	NSC	Timer	获取价格
LM555CN	FAIRCHILD	Single Timer	获取价格
LM555CN	INTERSIL	Timers for Timing Delays and Oscillator Applications in Commercial, Industrial and Militar	获取价格