LMN Datasheet: LMN / DIP 8 Pin / Low Voltage Audio Power Amplifier, LMN PDF Download FCISemiconductor, LMN Datasheet PDF, Pinouts. These are the first monolithic JFET input operational ampli- fiers to incorporate well matched, high voltage JFETs on the same chip with standard bipolar. LFN/NOPB Texas Instruments Operational Amplifiers – Op Amps JFET INPUT OP AMP datasheet, inventory, & pricing.

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You didn’t show the entire datasheet page, but I think the DC gain of 70 is a minimum value for that collector current. When the voltage across my sense resistor exceeds 4V, 4mA total current, the LMN will output low unbiasing the 2n With that information I assumed I would reference the 3rd entry for the behavior I could expect. Most importantly, the opamp gain at DC is around , so that additional 70 doesn’t really figure into the gain equations.


I am trying to setup a constant current source using a 2n and a Motorolla LMN. Jun 29, 8. Yes, my password is: Dec 20, 10, 1, I am pretty sure I’m interrupting the datasheet incorrectly.

Lastly, I’ve heard it is poor practice to use an op-amp as a comparator without some sort of hysteresis. Thank you all so much for any input. Your beta assumptions are wrong. Beta is also dependent on Vce.

Quote of the day. Mar 14, 20, 5, Both serial connections and USB to serial conversion connections are covered. Dec 28, 6. Dec 28, 9.

How does this factor in?

LMNInternet thinking Electronics Co., Electronic data resources trading network

An easier to read schematic: Also, Vce is listed as 1V here. The output voltage is only guaranteed to be 3. Dec 28, 7. The second key to this circuit is that the transistor emitter current equals to the collector current.

Dec 29, Why does your schematic drawing software produce backwards negative white lines on a black background instead of a normal positive image?? I want to ensure 4mA collector current regardless of my load.


Dec 28, 4. My Rationale Using the datasheet, to the best of my ability, it looks like my DC current gain would be If you have 3.

2n3904 DC current gain confusion

Here is a screen shot of the circuit, an explanation of my datasyeet, and the problem I am having. I know I may have to implement some hysteresis into this circuit. Sep 20, Could someone explain this section to me? I’d like to make a few comments: