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fujiachun · 发表于 2010-7-21 04:39

上次说的电路，前级D版主已经试验过，后级，我用LM350试验过，但是没有用LT1084试验，负电源初步考虑用模块的电感前面引出，还没有试验
最近小忙，帮忙试试，3.3V的稳压管如果用LT1084要换成1.4V左右的或者红色的LED，LM301我手头有，需要自己来取

itour · 发表于 2010-7-21 05:51

老师们辛苦了，这么晚还不睡

fujiachun · 发表于 2010-7-21 06:21

老师们辛苦了，这么晚还不睡
itour 发表于 2010-7-21 05:51 https://www.yleee.com.cn/images/common/back.gif

谢谢，我属猫的啦。白天睡觉的，您起的好早

浩祺心 · 发表于 2010-7-21 09:20

多谢傅老师！！很多元件我还真没有，看来有时间得登门拜访一下，顺便抢老师点宝贝了！

my1048 · 发表于 2010-7-21 11:41

上次说的电路，前级D版主已经试验过，后级，我用LM350试验过，但是没有用LT1084试验，负电源初步考虑用模块 ...
fujiachun 发表于 2010-7-21 04:39 https://www.yleee.com.cn/images/common/back.gif

付老师，电路中W1W2P1三个电位器分别起什么作用？谢谢。

benli · 发表于 2010-7-21 11:58

我看不到电路图，谁帖张图片格式的电路图?

fujiachun · 发表于 2010-7-21 17:43

付老师，电路中W1W2P1三个电位器分别起什么作用？谢谢。
my1048 发表于 2010-7-21 11:41 https://www.yleee.com.cn/images/common/back.gif

w1是恒流调整，W2是电压调整，P1用来控制最大恒流值

benli · 发表于 2010-7-21 21:00

请教下LM301的技术参数:

电源电压范围
共模输入电压范围
差模输入电压范围
输出电压范围
输入失调电压
转换速率
增益带宽积
我用手机上网无法查找技术手册，哪位帮忙找下

fujiachun · 发表于 2010-7-21 23:48

Y Offset voltage 3 mV maximum over
temperature (LM101A/LM201A)
Y Input current 100 nA maximum over
temperature (LM101A/LM201A)
Y Offset current 20 nA maximum over
temperature (LM101A/LM201A)
Y Guaranteed drift characteristics
Y Offsets guaranteed over entire common mode and supply
voltage ranges
Y Slew rate of 10V/ms as a summing amplifier
This amplifier offers many features which make its application
nearly foolproof: overload protection on the input and
output, no latch-up when the common mode range is exceeded,
and freedom from oscillations and compensation
with a single 30 pF capacitor. It has advantages over internally
compensated amplifiers in that the frequency compensation
can be tailored to the particular application. For example,
in low frequency circuits it can be overcompensated
for increased stability margin. Or the compensation can be
optimized to give more than a factor of ten improvement in
high frequency performance for most applications.
In addition, the device provides better accuracy and lower
noise in high impedance circuitry. The low input currents
also make it particularly well suited for long interval integrators
or timers, sample and hold circuits and low frequency
waveform generators. Further, replacing circuits where
matched transistor pairs buffer the inputs of conventional IC
op amps, it can give lower offset voltage and a drift at a
lower cost.
The LM101A is guaranteed over a temperature range of
b55§C to a125§C, the LM201A from b25§C to a85§C,
and the LM301A from 0§C to a70§C.

benli · 发表于 2010-7-21 23:56

傅老师请问它的电源电压是多少

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