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DESCRIPTION. The LM and the LM are general purpose dual operational amplifiers. The two amplifiers share a common bias network and power. CC Datasheet, CC PDF, UPCC. Part Number, CC. Manufacturer, NEC. Short Description, UPCC. Long Description, www. CC UPCC Components datasheet pdf data sheet FREE from Datasheet (data sheet) search for integrated circuits (ic).

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Jul 17, 22, 1, In the meantime, I will use the values you have measured. Posted by spidermanIIII in forum: I started reviewing the lessons on op amps on this site because I think the problem with my Tek scope power supply is a bad op amp. I could probably ramp the voltages up to 15 VDC if that is recommended. Nov 13, 7. Nov 13, 3. Is this a good enough test for U A and B in t his schematic?

Nov 13, 1. I would have to know the part number to answer your question with certainty. Would one of these work for now? Quote of the day. I am not great at reading datasheets. But would want to run ti by the folks here anyway.

Oct 29, 7, 3, Do you already have an account? The trick to the -8volt regulator stage is that Q is acting to control the positive-most end of the 15V secondary transformer winding so that it is exactly 7 volts positive when measured with respect to ground.

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I went out a purchased a couple of op amps from Radio Shack and built a comparator like the first one on this page.

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I have included the PS schematic below. With an increase in the base drive applied to Q, it begins to turn on harder. Your name or email address: Nov 13, 9. You May Also Like: Nov 13, The voltage you measured across C was around 15 volts. Nov 13, 2.

First off it was probably not necessary to start a new thread since members are going to be a bit confused between the two.

That can be remedied. It is a CC. Just so that I am clear. Can U use 2 transistors in place of a relay to switch 2 different voltages Posted by icadj in forum: Yes, my password is: As for the power supply, the opamp is actually being operated as an opamp rather than a comparator. If you imagine that the load on the -8V output increases then the -8volt output would drop slightly toward 0v.

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Can I use datassheet pen or mechanical pencil Posted by coonsaa0 in forum: Motion-Activated Trail Camera In this Teardown Tuesday, we are going to take a look at the inner workings of a trail camera!

You placed your DVM probes on the negative and positive terminals of the adtasheet and the voltages you posted are the ones you read. Could this finally be the dawn of room-temperature superconductors? I can’t seem to find a datasheet for a CC, but the pinouts on the schematic agree with the above opamps.

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C1458C Datasheet

Bottom line, compare the datasheets of the op amps for compatability. Here are my voltage readings for the -8 section. Discussion in ‘ General Electronics Datashfet ‘ started by spinnakerNov 13, This causes the output of the opamp to go positive which drives the base of transistor Q which in turns drives the base of Q positive. If the opamp is in a socket, why not try testing it on the bench?

What voltage do you measure across capactors C and C?

As the -8volts drops the positive input to the opamp begins to go positive. Nov 16, 1, I am trying to fix my Tek scope power -8 and power supply. I suspect that the op amp in the circuit is bad. This action pulls the positive end of the transformer secondary supplying the 15V DC down slightly. I have it working. Nov 13, 8.

This results in a restoration of the -8volt output so that the droop due to the increased load is cancelled. Nov 13, 5.

This will help prevent confusion since replying members will be less likely to be confused. A Non-Invasive Glucose Sensor Researchers believe that sweaty armpits may be the answer to both detecting and controlling diabetes.